Classroom extension by Studio Webb

Studio Webb has added a zinc-clad roof extension to a private school in south London, which sets off against the building’s existing brickwork (+ slideshow).

Classroom extension by Studio Webb Architects

London-based Studio Webb added the red-zinc extension over the roof of the Victorian primary school in Battersea, creating two extra classrooms on a new second floor.

Classroom extension by Studio Webb Architects

The 14-week project saw the steel-framed structure placed on top of the existing building, which Studio Webb director Rik Webb said was “the school’s only viable opportunity left on the site”.

Classroom extension by Studio Webb Architects

The firm chose materials that would fit in with different kinds of brickwork. “Within close context to a conservation area and neighbouring red brick and copper church, a sensitive design approach and appropriate choice of materials was critical,” said Webb.

Classroom extension by Studio Webb Architects

The architects continued the corbeled parapet detailing of the brick structure then added the new gabled structure above to create a generous space featuring numerous skylights.

Classroom extension by Studio Webb Architects

Two light-filled classrooms are separated by a long corridor with a bathroom and storage room at one end. A triangular corner window offers views towards the cathedral next door and out over the city rooftops beyond.

Classroom extension by Studio Webb Architects

Other school extensions we’ve featured include a gabled extension to a nineteenth-century boarding school in Brightona new facade inspired by post war system-built schools, also in London and a stark concrete extension to a secondary school in Lisbon.

See more extensions »
See more stories about schools »

Classroom extension by Studio Webb Architects

Photography is by Jack Hobhouse.

Here’s a project description from the architects:


Battersea School

Approached by a private school client, and inheriting a previous scheme, Studio Webb were appointed to undertake an appraisal period which enabled the design development of a second floor classroom extension in Battersea.

Classroom extension by Studio Webb Architects

With a fast track programme and comprehensive consultant team a lightweight steel structure with external zinc cladding with was produced.

Classroom extension by Studio Webb Architects

Within close context to a conservation area and neighbouring red brick / copper church, a sensitive design approach and appropriate choice of materials was critical.

Classroom extension by Studio Webb Architects

A simple gable form extends above the existing brick Victorian school block below. An expanse of structural glazing to the corners brings an abundance of natural light to the teaching spaces, and provides a practical internal layout.

Classroom extension by Studio Webb Architects

Vertical red zinc cladding was chosen to respond sympathetically to the adjacent church detail. The uniform surface of the material looks to offer a clean monolithic separation from the existing.

Classroom extension by Studio Webb Architects

Project Type : Private school extension
Location : Battersea, London, UK
Tender date : 06.04.2013
Start date on site : 11.05.2013

Classroom extension by Studio Webb Architects

Contract duration : 14 weeks
Gross internal floor area : 93m2
Contract / Procurment : JCT MWD 2001 / Traditional
Construction Cost : £234,000.00 exc. vat

Classroom extension by Studio Webb Architects

Client : l’ecole de battersea
Architect : Studio Webb Architects Ltd
Structural engineer : lyons o’neill
Quanity surveyor : measur
Contractor : rem projects (interiors) ltd
Building control / CDM : Head Projects Building Control Ltd

Classroom extension by Studio Webb Architects
Floor plan – click for larger image
Classroom extension by Studio Webb Architects
Roof plan – click for larger image
Classroom extension by Studio Webb Architects
North elevation – click for larger image
Classroom extension by Studio Webb Architects
West elevation – click for larger image
Classroom extension by Studio Webb Architects
South elevation – click for larger image

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House Wiva by Open Y Office

Ghent studio Open Y Office has extended a house in Belgium, adding a concrete structure that could also function as a standalone residence (+ slideshow).

House Wiva by Oyo

Located in the town of Herent, the extension was designed by Open Y Office with stark concrete walls that contrast against the white-painted brick exterior of the old house, which is a converted post office.

House Wiva by Oyo

“The inhabitants wanted an extension that was flexible enough to be transformed in time to a separate unit with its own bed and bathroom,” said the architects.

House Wiva by Oyo

The volume of the building appears as two rectangular boxes stacked on top of one another, with the upper storey slightly overlapping the ground floor below.

House Wiva by Oyo

An open-plan living area occupies the first floor and overlooks a garden with a new swimming pool.

House Wiva by Oyo

A glass passageway leads through to the existing house, plus large timber-framed windows open the room out to a long and narrow balcony.

House Wiva by Oyo

The ground floor below contains storage areas and a garage with timber panelled doors.

House Wiva by Oyo

Concrete steps with a steel balustrade lead into the house via an entrance on the first floor.

House Wiva by Oyo

Other residential extensions we’ve recently featured include a London home with a walk-on glass roof and an extension in Dublin covered with terracotta tiles that look like bricks.

House Wiva by Oyo

See more residential extensions »
See more architecture and design in Belgium »

House Wiva by Oyo

Photography is by Tom Janssens.

House Wiva by Oyo

Here’s a short description from the architects:


House Wiva

This OYO story takes you to Herent, where the extension of a private residence captures its surroundings.

House Wiva by Oyo

The inhabitants wanted an extension that was flexible enough to be transformed in time to a separate unit with its own bed and bathroom.

House Wiva by Oyo

OYO emphasised the contrast between the new shape and the old volume, which used to be an post office. You can see the concrete floating above the garden.

House Wiva by Oyo

From the point of view of the residents, the extension creates exciting views from the new living room. The two volumes are connected with a light wooden footbridge that functions as entrance but also clarifies the different volumes.

House Wiva by Oyo

Architects: OYO – Open Y Office
Location: Herent, Belgium
Type: Single family house extension
Area: House extension 110 m2
Year: 2010

House Wiva by Oyo
Site plan – click for larger image
House Wiva by Oyo
Ground floor plan – click for larger image and key
House Wiva by Oyo
First floor plan – click for larger image and key
House Wiva by Oyo
Sections – click for larger image
House Wiva by Oyo
North elevation – click for larger image
House Wiva by Oyo
East elevation – click for larger image
House Wiva by Oyo
South elevation – click for larger image

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Panoramarestaurant Karren by Architekten Rüf Stasi Partner

This steel and glass restaurant extension by Austrian studio Architekten Rüf Stasi Partner juts out over the edge of Karren Mountain in the Austrian Alps (+ slideshow).

Panoramarestaurant Karren by ARSP

Local studio Architekten Rüf Stasi Partner added the new hollow structure to increase the size of the dining room at a timber-clad restaurant and cable-car facility.

Panoramarestaurant Karren by ARSP

Elevated above a paved terrace, the new restaurant is held in place by long steel columns rooted into the mountain and connected to the main building by a glass passageway.

Panoramarestaurant Karren by ARSP

It is located 956 metres above sea level, allowing panoramic views towards Switzerland, Germany, Lake Constance and the Rhine Valley.

Panoramarestaurant Karren by ARSP

“The aim of the design, in addition to functional requirements, was to bring a sense of calm to the ensemble and create a more holistic appearance for the Karren cable-car station,” said the studio.

Panoramarestaurant Karren by ARSP

The architects also renovated the existing building. Parts of the timber structure were prefabricated before being flown to the site by helicopter, along with the pre-assembled steel parts for the restaurant, and both were erected on site.

Panoramarestaurant Karren by ARSP

Other mountain-top architecture we’ve featured includes a concrete mountain cabin also in the Austrian Alps, a seesaw-shaped lookout along a Mexican pilgrimage route and  a hunting lodge and hotel on Sognefjorden in Norway.

Panoramarestaurant Karren by ARSP

See more restaurants »
See more Austrian architecture and design »

Panoramarestaurant Karren by ARSP

Photography is by Zooey Braun.

Here’s some information from the architects:


Panoramarestaurant Karren, Austria

Dornbirns’ ‘house mountain’ The Karren, is the most popular destination in the city. Due to the steady growth of domestic and foreign visitors, the capacity of the restaurant slowly became overwhelmed.

Panoramarestaurant Karren by ARSP

Jointly developed with the client, the owners, the business manager and the Architects Rüf Stasi Partners (ARSP), a sustainable concept for the expansion and renovation of the new panoramic restaurant Karren, was developed. The concept not only doubles the seating within the panoramic dining room and increases the outdoor terrace area; it also provides an optimisation of internal service processes, completely reconfiguring the restaurant kitchen and the storage areas.

Panoramarestaurant Karren by ARSP

The analysis of the existing building revealed a diverse mixture of renovations and extensions added over generations. As a consequence the existing construction and style had become chaotic. The aim of the design was therefore, in addition to the functional requirements, to bring a sense of calm of the ensemble and create a more holistic appearance for the Karren cable-car station.

Panoramarestaurant Karren by ARSP

A new steel and glass structure was attached to the front end of the existing panoramic restaurant (built in 1996) on the first floor. This component was rotated through 90 ° and then connected via a second glass passageway to the main building. Together this glass ring creates an open sided atrium which floats over the guests as they arrive from the cable-car or from the mountain path.

Panoramarestaurant Karren by ARSP

Inside the glass structure provides diners with an uninterrupted view of the Swiss and Austrian Alps in all directions. The advantageous cliff position also provides stunning views of Lake Constance and the Rhine Valley. At the same time, a harmonious appearance of steel and glass in the construction is achieved.The old south-facing wooden construction has been completely dismantled and replaced by a new, larger floor plan.

Panoramarestaurant Karren by ARSP

Through the extension of the building to the South, the required area for the kitchen extension is achieved and the previously hectic façade is calmed by removing many of the volume jumps creating a smoother outer shell. The new timber façade continues over the concrete construction of the cable car station in the east and over the services area, cladding almost all of the building in the same material to enhance the calming effect. The guests can also enjoy new views in the east (the ‘Staufenblick’) and north (the view of Dornbirn along the cable car route) which were previously not possible.

Panoramarestaurant Karren by ARSP

All building work had to be completed within a 10 week period during the winter months and at 956m above sea level. The main site entrance was only accessible through an extremely steep and narrow forest path.

Only through meticulous logistical planning was the perfect interaction of all counterparts on this tight construction schedule possible.

Panoramarestaurant Karren by ARSP

From the outset, planning was optimised through the extensive use of prefabrication. This allowed all timber construction to be made in an assembly hall before being flown to the site in less than 4 hours by helicopter. This allowed the entire wooden structure to be erected within two days on site. The pre-assembled steel parts were individually transported via the mountain road and fully assembled on the terrace.

Panoramarestaurant Karren by ARSP

Using the most powerful crane in the foothills of the Alps, the entire steel construction was lifted into place on the 11th of April 2013, and the end result was accurate to within 1mm. In parallel, the interior work and the technical installations were pushed hard to meet the deadline, which were completed three days early on the 8th of May. With the kitchens in full operation the new Karren Restaurant was proudly opened on time with a full festival.

Panoramarestaurant Karren by ARSP

Structure: Panoramic restaurant Karren
Planning and site supervision: Architekten Rüf Stasi Partner – Albert Rüf and Frank Stasi
Additional personnel: DI Arch Rike Kress
Construction time: 10 weeks
Altitude: 956m above sea level
Extension: 180 seat panoramic restaurant and 120 seats on the terrace

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Lightbox House by Edwards Moore

Australian studio Edwards Moore has revamped a small brick house in Melbourne by adding a new storey and a translucent roof (+ slideshow).

Lightbox House by Edwards Moore

Architects Ben Edwards and Juliet Moore were tasked with increasing the size of the single-storey terraced house, as well as improving the quality of space and light inside each of its rooms.

Lightbox House by Edwards Moore

A new storey was added over the existing structure, with a translucent roof that diffuses light through the entire upper level. Unlike the lower walls, which are made from brick and feature peeling paintwork, the extension comes with a clean black facade created by standing-seam cladding.

Lightbox House by Edwards Moore

The new level accommodates a living room on one side and a kitchen/dining room on the other, freeing up space on the ground floor for a reception room and two generous bedrooms.

Lightbox House by Edwards Moore

“[We] considered the addition of the second floor not simply as the addition of horizontal plane perched atop the existing structure, but equally as a vertical room that creates a great sense of volume and unity within the dwelling as a whole,” said Edwards.

Lightbox House by Edwards Moore

A layer of perforated metal sits above exposed wooden rafters to give a see-through floor to the living room, allowing light and views down to the spaces below.

Lightbox House by Edwards Moore

“The translucent skin floods the spaces with natural light, and strategically placed openings create a central internal landscape,” added the architect.

Lightbox House by Edwards Moore

Cantilevered wooden treads provide a floating staircase between the two floors, resonating with the rhythm of the exposed rafters above.

Lightbox House by Edwards Moore

Edwards Moore also recently renovated another house in Melbourne, leaving peeling plasterwork to expose sections of brick walls.

Lightbox House by Edwards Moore

Other residential projects by the studio include a house with a combined kitchen counter and staircase, plus an apartment with chunky chipboard lining its walls.

Lightbox House by Edwards Moore

See more architecture by Edwards Moore »
See more houses in Australia »

Lightbox House by Edwards Moore

Photography is by Fraser Marsden.

Lightbox House by Edwards Moore

Here’s a project description from the architects:


Lightbox House

A small single-storey terrace house, dwarfed by the surrounding urban fabric. The aim, to increase the quality and scale of the living spaces within, improve the sense of aspect/outlook and access to natural light, whilst maintaining a private and comforting oasis.

Lightbox House by Edwards Moore

By considering the addition of the second floor not simply as the addition of horizontal plane perched atop the existing structure, but equally as a vertical room which, through its connectivity between ‘branches’, creates a great sense of volume and unity within the dwelling as a whole. The translucent skin floods the spaces with natural light, and strategically placed openings create a central internal landscape.

Lightbox House by Edwards Moore
Ground floor plan
Lightbox House by Edwards Moore
First floor plan
Lightbox House by Edwards Moore
Long section – click for larger image
Lightbox House by Edwards Moore
Cross section – click for larger image
Lightbox House by Edwards Moore
Street elevation – click for larger image

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Blairgowrie House by Wolveridge Architects

Small windows scattered across the facade of this house extension outside Melbourne by Australian practice Wolveridge Architects limit the amount of direct sunlight entering the building (+ slideshow).

Blairgowrie House by Wolveridge Architects

Wolveridge Architects designed the extension to provide additional bedrooms for the owners’ three young sons, who are now housed above a large garage.

Blairgowrie House by Wolveridge Architects

The architects say that the composition of openings in the facade “is designed to restrict the inflow of undesirable west sun and provides a suitable level of visual engagement with the street.”

Blairgowrie House by Wolveridge Architects

Anodised aluminium window frames contrast with the dark stained western red cedar cladding that covers the new addition and maintains the house’s existing material palette.

Blairgowrie House by Wolveridge Architects

Inside the bedrooms, the windows are integrated into a geometric arrangement of cabinetry that creates storage and seating.

Blairgowrie House by Wolveridge Architects

The extension also incorporates a new living area that is separated from the bedrooms by a large shaded terrace with views of the nearby forest.

Blairgowrie House by Wolveridge Architects

Yesterday we published a beach house by Wolveridge Architects with louvred shutters concealing its windows and architect Clare Cousins recently extended a family home in Australia by adding a stilted timber-framed guest house. See more houses in Australia »

Blairgowrie House by Wolveridge Architects

Photography is by Ben Hosking.

Here’s a project description from the architects:


Blairgowrie House

This extension to an existing two storey dwelling provides essential additional living areas for a family with three young boys. The original structure made very little connection with the surrounding property and had deficiencies in access to northern light.

Blairgowrie House by Wolveridge Architects

By bringing the façade dramatically forward towards the street it was possible to incorporate the three required bedrooms above a large garage on street level.

Blairgowrie House by Wolveridge Architects

To separate the bedrooms from the new living area a north facing courtyard was introduced which also provides a terrific outlook towards the surrounding Moonah forest.

Blairgowrie House by Wolveridge Architects

The block type form established from bringing the front of the dwelling forward and its western orientation influenced a design decision to create a complex series of openings in the façade, allowing for plenty of natural light to the children’s bedrooms within.

Blairgowrie House by Wolveridge Architects

The composition of openings is designed to restrict the inflow of undesirable west sun and provides a suitable level of visual engagement with the street.

Blairgowrie House by Wolveridge Architects

The cabinetry design integrates with the complex window arrangement on the outside, creating a playful sense within each bedroom.

Blairgowrie House by Wolveridge Architects

The existing palette of dark stained western red cedar cladding and anodised aluminium window frames was carried through in the new work, integrating the original structure within the proposed design, but still providing a sense of separation.

Blairgowrie House by Wolveridge Architects

Project name: Blairgowrie House
Date of construction completion: 25/08/12
Project team: Jerry Wolveridge, Sina Petzold, Ricky Booth, David Anthony
Builder and Construction Manager: Tim Prebble
Structural/Civil Engineer: Don Moore & Associates
Building Surveyor: Nepean Building Permits

Blairgowrie House by Wolveridge Architects
Ground floor plan – click for larger image
Blairgowrie House by Wolveridge Architects
Basement plan – click for larger image
Blairgowrie House by Wolveridge Architects
Long section – click for larger image
Blairgowrie House by Wolveridge Architects
West elevation – click for larger image
Blairgowrie House by Wolveridge Architects
South elevation – click for larger image

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House Extension in Dublin by GKMP Architects

Terracotta tiles resembling brickwork cover parts of this house extension in Dublin by Irish practice GKMP Architects (+ slideshow).

dezeen_House extension in Dublin by GKMP Architects_3sq

GKMP Architects removed the rear wall of the 1950s semi-detached house at ground level so the kitchen and dining area could be extended into the garden.

dezeen_House extension in Dublin by GKMP Architects_2

The extension was constructed from blockwork before white render and the decorative tiles were added.

dezeen_House extension in Dublin by GKMP Architects_4

The faceted shape of the new structure results in a series of angular interior spaces, while lower walls separate a patio from the garden.

dezeen_House extension in Dublin by GKMP Architects_1

“The angled walls create deep thresholds between inside and outside and make niches for benches,” the architects said.

dezeen_House extension in Dublin by GKMP Architects_9

A layer of sedum covers the roof of the new addition, making it appear to blend in with the garden beyond when viewed from the upper floor.

dezeen_House extension in Dublin by GKMP Architects_6

Other recent residential extensions on Dezeen include a faceted slatted wooden structure that seems to be scaling the back of an apartment in Italy and an addition to an Arts and Crafts-style house in England with glass walls that open out onto the surrounding woodland. See more house extensions »

dezeen_House extension in Dublin by GKMP Architects_5

We previously published a beauty salon in Japan with an interior covered in tiles arranged in a traditional English bricklaying pattern and a seaside art gallery in England by HAT Projects clad in shimmering black glazed tiles. See more tiles »

dezeen_House extension in Dublin by GKMP Architects_8

Photography is by Alice Clancy.

The architects sent us this project description:


House Extension at Silchester Park, Glenageary

The project involves the refurbishment and extension of a 1950s semi-detached house in Glenageary, Dublin, Ireland.

dezeen_House extension in Dublin by GKMP Architects_7

The ground floor rear wall is removed to open the house to the south-facing garden. A series of cranked and faceted walls are made that enclose a new dining area and associated external terraces. The angled walls create deep thresholds between inside and outside and make niches for benches. They are made from blockwork and are faced in render and terracotta tiles.

dezeen_House extension in Dublin by GKMP Architects_10
Floor plan – click for larger image

The timber roof of the extension is covered in sedum to have a visual connection with the garden when viewed from the upper floor. A rooflight is made at the point of connection between the new and the existing to pull light into the plan.

dezeen_House extension in Dublin by GKMP Architects_11
Section one – click for larger image

About the practice:

GKMP Architects is a practice that designs high quality modern architecture. We place a strong emphasis on the careful and inventive use of materials, the qualities of light and the relationship between the building and its context. We consider these issues to be more important than working in a particular style and hope that each project will be a creative interpretation of the client, site, brief and budget.

dezeen_House extension in Dublin by GKMP Architects_12
Section two – click for larger image

Grace Keeley and Michael Pike graduated from UCD in 1998 and established GKMP Architects in Barcelona in 2003 before relocating to Dublin in 2004. The practice has designed a number of high quality housing and public space projects. We have received a number of awards including First Prize in the recent Docomomo Central Bank Competition. Our work has been published internationally and has also been included in a number of exhibitions, including the ‘Rebuilding the Republic: New Irish Architecture 2000-10 Exhibition’ in Leuven, Belgium in May 2011.

dezeen_House extension in Dublin by GKMP Architects_13
Section three – click for larger image

Architects: GKMP Architects
Contractor: Sheerin Construction
Engineer: Downes Associates
Lighting Consultant: Wink Lighting

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Restaurant Castillito by Mathias Klotz and Lillian Allen

Chilean architects Mathias Klotz and Lillian Allen have renovated a castle-like residence in Santiago’s Parque Forestal to create a restaurant, exhibition space and ice-cream parlour (+ slideshow).

Restaurant Castillito by Mathias Klotz

The building is named “Castillo Forestal”, which means forest castle, but it was actually constructed at the start of the nineteenth century as a house for the park’s gardener. Over the years the building had become abandoned, so Mathias Klotz and Lillian Allen were asked to bring it back into use.

Restaurant Castillito by Mathias Klotz

The architects began by demolishing previous extensions to the two-storey red-brick building, then added a new steel and glass structure that wraps around the north and east elevations.

Restaurant Castillito by Mathias Klotz

“Our proposal was to demolish the successive extensions and replace them with a single-story volume housing an intermediate space between inside and outside,” said Klotz.

Restaurant Castillito by Mathias Klotz

This structure accommodates the restaurant, creating a glazed ground-floor dining room and a first-floor terrace overlooking the park.

Restaurant Castillito by Mathias Klotz

Additional dining areas are provided by the two main rooms of the original house, which have been renovated to reveal their interior brickwork. The architects removed various stucco details, but left cornices intact and painted them grey to match the steel framework of the new extension.

Restaurant Castillito by Mathias Klotz
Site plan – click for larger image

Bare lightbulbs hang from the ceiling in rows and have been clustered into groups of three on the first-floor.

Restaurant Castillito by Mathias Klotz
First floor plan – click for larger image

The exhibition galleries and ice-cream parlour are also housed in the existing building, while customer toilets are located in the basement and the circular tower is set to function as a wine store.

Restaurant Castillito by Mathias Klotz
Ground floor plan – click for larger image

We’ve recently featured new photographs of the first major project by Mathias Klotz, which was a home for his mother. Other projects by the architect include a holiday home for a family with 11 daughters.

Restaurant Castillito by Mathias Klotz
Basement plan – click for larger image

See more architecture by Mathias Klotz »
See more architecture in Chile »

Restaurant Castillito by Mathias Klotz
Restaurant roof plan – click for larger image

Photography is by Roland Halbe.

Here’s a project description from Mathias Klotz:


Castillo Parque Forestal, Santiago, Chile

The so called “Forest Castle” is in reality nothing more than a modest lodging built in the Parque Forestal on the occasion of Chile’s 1910 Centenary celebrations, to house the park’s gardener.

Restaurant Castillito by Mathias Klotz
Section A – click for larger image

The park, which dates from the Centenary, was inaugurated at the same time as the Fine Arts Museum on the other side of the street. Over time the house lost its original function; it was extended and occupied on a temporary basis, and gradually deteriorated until it was abandoned altogether a number of years ago. For this reason Santiago city council tendered a 30-year concession to restore the structure and find a new use for the building.

Restaurant Castillito by Mathias Klotz
Section B – click for larger image

Our proposal was to demolish the successive extensions and replace them with a single-story volume housing an intermediate space between inside and outside.

Restaurant Castillito by Mathias Klotz
Section C – click for larger image

The two rooms of the original structure were restored, removing the stucco and leaving the brickwork visible, with the exception of the cornices. These were painted the same dark grey as the steel structure of the new volume, in order to link the two structures together and emphasise the original building.

Restaurant Castillito by Mathias Klotz
Section D – click for larger image

The new uses it has acquired are a bookstore, restaurant, ice-cream store and exhibition space.

Restaurant Castillito by Mathias Klotz
North elevation – click for larger image
Restaurant Castillito by Mathias Klotz
South elevation – click for larger image
Restaurant Castillito by Mathias Klotz
East elevation – click for larger image
Restaurant Castillito by Mathias Klotz
West elevation – click for larger image

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Chelsea Town House by Moxon Architects

London-based Moxon Architects has completed a contemporary glazed extension to this Grade II listed town house in south-west London.

Chelsea Town House by Moxon Architects

Moxon Architects added a new top floor to the house and a rear extension on the lower ground floor to increase the total volume by more than a quarter.

They transformed the property by removing internal partitions and reconfiguring the layout, creating fewer rooms that provide larger open-plan living spaces.

Chelsea Town House by Moxon Architects

“The driver for this scheme has been to treat the existing structure as a geometric guide for the setting out of new material and spatial interventions,” the architects said.

dezeen_Chelsea Town House by Moxon Architects_11

A two-storey atrium brings natural light into the lower ground floor and contains a limed oak staircase.

Chelsea Town House by Moxon Architects

The staircase has an inbuilt library, retractable writing desk, secret compartments and library steps.

dezeen_Chelsea Town House by Moxon Architects_4

The lower ground floor opens onto a rear courtyard garden.

Chelsea Town House by Moxon Architects

Moxon Architects has previously converted a former coach house and concealed it behind a steel fence with recesses for climbing plants.

Chelsea Town House by Moxon Architects

Other residential renovations we’ve featured recently include a converted loft space with combined staircase and bookshelf, and a crumbling stone stable that’s been converted into a family home in Spain.

Photography is by Simon Kennedy/Moxon Architects.

Here’s more information from Moxon Architects:


Chelsea Town House

Moxon Architects have completed a grade 2 listed house conversion in Chelsea. The driver for this scheme has been to treat the existing structure as a geometric guide for the setting out of new material and spatial interventions.

Chelsea Town House by Moxon Architects

The space has been radically reconfigured throughout, to provide a fewer number of larger and better rooms, with additions to the top and bottom of the house increasing its volume by over a quarter.

Chelsea Town House by Moxon Architects

The original structure is retained internally as traces within the new layout – differential materials and finishes follow the extents of the previous structure across the walls, floors and ceilings of the new space.

dezeen_Chelsea Town House by Moxon Architects_12

This geometry sets up a framework for the use of the space: circulation and use has been established within these geometric confines, whilst simultaneously the house has become lighter and more open, reflecting the needs of the client.

dezeen_Chelsea Town House by Moxon Architects_14

The limed oak staircase overlooks a new double height which brings light deep into the lower ground floor and includes a high level library, pull out writing desk, secret compartments and library steps.

Chelsea Town House by Moxon Architects
Basement plan – click for larger image
Chelsea Town House by Moxon Architects
Cross section – click for larger image

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Maiden Tower by Marte.Marte Architects

The towering fortress of fairytale character Rapunzel inspired this steel-clad house extension that accommodates the three oldest daughters of Austrian architect Stefan Marte (+ slideshow).

Maiden Tower by Marte.Marte Architects

Named Maiden Tower, the four-storey residence sits alongside the family’s existing concrete home in the Alpine district of Vorarlberg, western Austria, and is clad with oxidising steel to create a visible contrast between the new and old structures.

Maiden Tower by Marte.Marte Architects

Stefan Marte, of Marte.Marte Architects, planned the building over four storeys, allowing each daughter to have her bedroom on a different floor to her sisters.

Maiden Tower by Marte.Marte Architects

A corridor leads through to the extension from the existing house, arriving at a small library. Beyond this, the girls have their own separate kitchen and dining room.

Maiden Tower by Marte.Marte Architects

A corner staircase leads up to the bedrooms, while doors lead out to a swimming pool and terrace in the garden.

Maiden Tower by Marte.Marte Architects

Corten-steel panels clad three sides of the tower, while the east elevation features floor-to-ceiling glazing, offering views back towards the main house.

Maiden Tower by Marte.Marte Architects

Additional windows and doors are dotted across the north and south elevations and can be concealed behind hinged steel shutters.

Maiden Tower by Marte.Marte Architects

This is the third project by Marte.Marte Architects to feature on Dezeen recently, following a twisted bridge and a concrete holiday house.

Maiden Tower by Marte.Marte Architects

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Maiden Tower by Marte.Marte Architects
Site plan – click for larger image

Photography is by Marc Lins.

Here’s a project description from writer Marina Hämmerle:


Maiden Tower

What could match the massive presence of Marte’s concrete home, this raw, stony material, this self‐contained unit? Oxidising steel: just as raw, just as authentic in its expression and its properties. The interior impression remains the same – wood surfaces, warm colours, fine pores. The new exterior structure, on the other hand, is masculine, striving skywards, rising up from the surrounding landscape like the neighbouring pear tree. That behind the massive exterior lies a building of lightweight materials may be inspired by the tale of the Trojan horse.

Maiden Tower by Marte.Marte Architects
Ground floor plan – click for larger image

A new space opens up between the two buildings, complemented by an in‐ground pool – uncompromising, hard, less sensible, but therefore all the more magical, idiosyncratic, and sensuous. Oxidising steel on the walls and bottom, encased like in a suit of armour. The tower also appears this way with its steel ventilation flaps to the north and south and fixed glazing to the east.

Maiden Tower by Marte.Marte Architects
First floor plan – click for larger image

Rapunzel, Rapunzel… Through the library, down a few steps into the separate kitchen, and then through the dining room, facing the pool, the little princesses can climb the newel stairs to their bedrooms. There, they are presented with a view, on the one hand, of their parents’ protective house and, on the other, the nearby scenic forest. The spatial perspective mirrors this interplay of freedom and guidance, becoming a symbol of their possibilities for development within the family.

Maiden Tower by Marte.Marte Architects
Second and third floor plan – click for larger image

The whole structure seems so sealed off, but in terms of use, it not only offers an astonishing amount of free space, but also conveys respect and draws boundaries. This makes it possible to live together in a relatively small space and at the same time provides each person with opportunities for participation and private space.

Maiden Tower by Marte.Marte Architects
Cross section – click for larger image

What an unparalleled atmosphere for the girls. If it is true that the first few years of life shape our future spatial desires, then these girls will have had a very valuable personal experience that their future Prince Charmings will probably not have had: a life in manifest appreciation.

Maiden Tower by Marte.Marte Architects
Elevations – click for larger image

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Marte.Marte Architects
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KubiK extension by GRAS arquitectos

Spanish firm GRAS arquitectos has extended a traditional detached house in Mallorca by adding a series of contrasting Corten steel boxes.

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The existing white-painted building was left intact, with the extensions joined to external walls or added to gaps between the structures.

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The steel volumes contain new facilities including an indoor pool, spa and game room, while a roof deck provides additional outdoor space with views of the nearby bay.

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An elongated extension housing the game room and a new bedroom projects into the garden and the spa area is buried in the side of a hill.

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The walls, ceiling and floors in the spa are covered with ipe wood (also known as Brazilian walnut) which adds warmth to the subterranean space, while south facing windows admit plentiful daylight.

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The architects explain that the the Corten volumes “surround and embrace the old house, generating an innovative combination between the existing building and the new ‘boxes’ of steel.”

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As well as creating an aesthetic contrast, Corten steel was chosen because it is “a ‘living’ material that changes over the years; acquiring the patina that [the] test of time provides to noble materials.”

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We recently featured a landscape architecture project comprising several Corten steel structures scattered across a Spanish hillside.

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See all of our stories about Corten steel and check out our Pinterest board dedicated to the material.

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Photography is by José Hevia.

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Here are some more details from the architects:


Kubik extension

Extreme contrast: extension of a single-family detached home in Mallorca.

The intervention in an existing building, and even more so with the ambition of this project, is always a delicate matter.

In this case the client wanted to add many programme requirements to the current house: an indoor pool, a game room and several rooms in addition to reorganizing the existing dwelling.

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It was chosen, after much research, to extend the house through an exercise of Extreme Contrast.

The possibility of intervening in the façades of the existing house to adjust them to a more current aesthetic was cast aside; instead the contemporary language of the new volumes was emphasized to maximise contrast.

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The result is a series of “boxes” that surround and embrace the old house, generating an innovative combination between the existing building and the new “boxes” of steel. This combination enhances both architectures: the framing of the new volumes highlights the old, of little value and the new stands out greatly in contrast to the former.

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Plan – click for larger image

The materialisation of the project was in line with the concept; the original building was left in the same state, painted white, with sloping Arab tile roofs and wood carpentry, whilst the extension was done with Corten steel searching for rotundity of the elements.

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First floor plan – click for larger image

Corten steel is a material that clearly contrasts with the already existing dwelling, as required by the concept. It is also a “living” material that changes over the years; acquiring the patina that test of time provides to noble materials.

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Ground floor plan – click for larger image

The combination of both languages creates interesting situations and new programmes for the dwelling. The entrance sequence, which is essential in a house, is enhanced by architectural intervention: a new volume conceived as porch wraps-up arrivals; and the volume that houses the new bathroom of the main room projects over the garden creating a new porch which emphasises the exit to the garden, as well as it offers spectacular views over the bay of Palma. At the far ends of the house both the new bedroom as well as the game room project from the main volume stretching the house and spanning more garden and providing further views. Finally the indoor pool and spa are below ground level.

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North elevation – click for larger image

This unique space features a swimming pool, a small spa area and gym. A large window to the south maximizes the relationship with the surroundings and views, so that the SPA can become a semi-outdoor space. Aiming to provide this space with the maximum warmth, close attention has been paid to the materials in this area: the volume of concrete that forms the SPA is covered with IPE wood on both ground and ceiling, creating a continuous space that surrounds the pools, these in turn mollify in white marble to brighten the space. This way, users forget that they are in a buried space.

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East elevation – click for larger image

The result is a very cosy environment suitable for the purpose for which it is intended.

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South elevation – click for larger image

The house is situated on a plot within a pine forest, with a steep slope facing south and offers extensive views over the bay of Palma. By placing the semi-buried SPA volume in front of the house, advantage is taken of the SPA’s roof deck to extend the garden; thus the dwelling obtains a space it was lacking: a large landscaped horizontal surface.

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West elevation – click for larger image

KUBIK EXTENSION is a GRAS arquitectos project, Guillermo Reynes with Alvaro Perez

Architects: GRAS arquitectos, Guillermo Reynés con Álvaro Perez
Location: Palma de Mallorca, Spain
Area: 950 m2
Year: 2013
Photography:  José Hevia

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Section – click for larger image

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GRAS arquitectos
appeared first on Dezeen.