Australian studio Mihaly Slocombe has returned to a Melbourne home it completed almost a decade ago to add a timber nursery annex patterned with circular cutouts (+ slideshow). More
This extension to a Victorian house in London features a decorative wooden ceiling, exposed brickwork and a dining space that opens out to a garden filled with bushy plants (+ slideshow). More
A triangular lightwell covered in scale-like shingles extends from the roof of this living room that architect Nuno Melo Sousa has added to a house in Penafiel, Portugal (+ slideshow). More
A black box looms over the rusty steel facade of this complex of artists' studios and apartments, created by architecture studio Featherstone Young on the former site of a board-game factory in north London (+ slideshow). More
Irish studio NOJI Architects experimented with plywood to create the three different kinds of structure that frame this extension to a terraced house in Dublin. More
The Whitworth gallery in Manchester has reopened following an extensive renovation by London architecture studio MUMA that included the addition of two new glass and brick gallery wings (+ slideshow). More
Forming a new end to a 1960s housing estate in London, this timber-framed house extension was designed to look contemporary but also to match the aesthetic of the original block (+ slideshow). More
Architecture studio Lipton Plant has turned a small space at the side of a Victorian house in north London into the glazed entrance for a basement extension focused around an oak staircase (+ slideshow). More
These four "finger-like" extensions to a Vienna restaurant, by PPAG Architects, feature mirrored walls that reflect the surrounding parkland, and windows that slide up above the roof (+ slideshow). More
Hexagonal slate tiles cover this extension to a west London home designed by architects Christian Ducker and Tyeth Gundry to create a bright and spacious new kitchen (+ slideshow). More
This rust-coloured copper home extension by British studio Poulsom Middlehurst sits above the red-brick walls and clay-tiled roof of a Victorian terrace in east London. More
Architect Jochen Specht has doubled the size of a 1960s house in rural Austria by encasing its stone walls behind a new facade made up of dark timber, concrete and plenty of windows (+ slideshow). More
Wooden walls concertina across open-plan living areas to subdivide this renovated stone house and extension by Spanish office XLMS (+ slideshow). More
Australian studio Philip Stejskal Architecture has equipped a white timber extension to a 1890s duplex with shutters and sliding panels that camouflage with the walls when closed. More
Hundreds of tiny holes puncture the white concrete panels that clad these two extensions to the Badajoz Fine Arts Museum by Spanish firm Estudio Arquitectura Hago (+ slideshow). More
A large window wraps around one corner of this brickwork extension to a Victorian house in London by local office Cousins and Cousins (+ slideshow). More
Belgian firm Urbain Architectencollectief has refurbished a former brick fire station building and added an extra storey to house additional facilities for a cultural centre in the city of Kortrijk (+ slideshow). More
News: Danish studio COBE has unveiled its designs for an extension to the Red Cross headquarters in Copenhagen, comprising a large triangular structure that rises up from the ground at an angle to meet the existing building. More
The upper storey of this brick extension to a mid-century home in north London by Lipton Plant Architects projects over the entrance to form a porch (+ slideshow). More
Pale wooden window frames contrast with the black-stained cedar facades of this extension to a detached house in Nantes by French studio Bertin Bichet Architectes (+ slideshow). More