WORKac adds jagged black rooftop extension to historic Manhattan building
US studio WORKac has renovated a 19th-century structure in New York and added a spacious penthouse topped with a folded metal roof. More
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Govaert & Vanhoutte Architects transforms Belgian fort into home and guesthouse
Govaert & Vanhoutte Architects has renovated and extended a former fort in West Flanders to create a home for an estate agent and his family. More
Brick screens are set into framework of concrete columns and beams at Casa Grid
Bloco Arquitetos has created an extra storey for a family home in Brasília by adding a stilted concrete structure that incorporates panels of perforated brickwork. More
Rob Mols and Studio K update Belgian home with wood-lined garden room
This house in Belgium has been overhauled for a couple of art and book collectors to include a wood-lined living space and plenty of cosy reading nooks. More
Victorian loft conversion by A Small Studio creates "relaxation oasis"
A dormer window with a thick black frame offers views of the garden from this reading room, which is one of three new loft spaces created for a home in south-east London by A Small Studio. More
Adam Knibb Architects extends Hampshire barn conversion with timber-clad box
British architect Adam Knibb has added this cross-laminated timber extension to a house in the English county of Hampshire, and connected it to the former barn building by a frameless glass box. More
Victorian home in Arkansas receives rectilinear annex by deMx
Arkansas studio deMx Architecture took cues from historic architecture while designing this two-storey modern addition to a local house. More
Desai Chia adds pointy extension to cedar-clad cottage in the Hamptons
US studio Desai Chia Architecture has overhauled a country home in Long Island, New York, and created an extension that is meant to be an "expressive counterpoint" to the main dwelling. More
Steam-bent wood wraps house in the Cornish woods
Furniture designers Tom and Danielle Raffield have used steam-bent timber to cover this extension to an old gamekeeper's lodge in Cornish woodland, which featured in UK television show Grand Designs earlier this month. More
Blee Halligan Architects updates north London house with lantern-like extension
Blee Halligan Architects has renovated and extended a house on Highbury Hill in north London, using black gridded glazing and pale brickwork to frame views into the back garden. More
Steel and glass extension added to traditional stone house in Paris by Atelier Lame
Atelier Lame has added a steel-framed extension to an old stone house in a Parisian suburb, as part of a renovation that creates ample storage for an avid CD and record collector (+ slideshow). More
Chen + Suchart extends historic Arizona home with metal-clad gabled addition
US firm Chen + Suchart Studio has renovated and expanded a 1930s dwelling in Phoenix, Arizona, adding a metal-clad volume with a window wall and a pointy roof (+ slideshow). More
Call for entries to NLA's Don't Move, Improve! awards 2017
Dezeen promotion: New London Architecture is now accepting entries for Don't Move, Improve! 2017, a competition to find the best house extensions in London. More
Dark-toned extension added to white Federation house in Sydney by Studioplusthree
Architects office Studioplusthree has overhauled a traditional house in Sydney for a pair of musicians, adding a recycled-brick extension that features a projecting black steel awning. More
Studio B adds two separate volumes to Riverside House in Colorado
Colorado architects Studio B have extended a local waterfront home by adding a pair of buildings with different levels of privacy (+ slideshow). More
McGarry-Moon Architects updates Richmond Park gatehouse with contemporary extension
Northern Ireland studio McGarry-Moon Architects has renovated a historic house in west London, and added a contemporary timber and concrete extension connected by a glass-lined corridor (+ slideshow). More
3six0 creates living annex for elderly in-laws at Rhode Island home
Rhode Island firm 3six0 has converted the garage of a family home to make room for an in-law residence adjacent to the main house (+ slideshow). More
Atelier Tom Vanhee adds pair of gabled extensions to brick farmhouse in Belgium
Belgian studio Atelier Tom Vanhee has added two offset gabled volumes onto the side of an existing brick structure near the village of Aartrijke to turn it into a modern home (+ slideshow). More
Studio Octopi adds glass-fronted extension to White Lodge house in London
Local architecture firm Studio Octopi added this brick and glass extension to a Victorian terrace in west London to improve the connection between the property's reconfigured interior and garden (+ slideshow). More
Toshiko Mori expands Marcel Breuer-designed residence with glazed addition
New York architect Toshiko Mori has renovated and extended a building originally designed by famed Modernist architect Marcel Breuer as a personal residence, connecting two structures with a glass-enclosed staircase (+ slideshow). More