After 15 years of incremental work, architect Niall McLaughlin has restored and extended a London house with a subterranean gallery (+ slideshow). More about Niall McLaughlin extends Duncan Terrace house with translucent passageway and gallery
UK architecture firm 5th Studio has added a shingle-clad extension to a house in a listed former inn that is raised above the flood level of the River Cam in Cambridgeshire (+ slideshow). More about Wildfowl Cottage extension by 5th Studio is clad with shingles and raised over a flood plain
This house extension in Melbourne by local studio Kennedy Nolan Architects is separated from the rest of the Edwardian property by a wall with a circular hole that children can climb through (+ slideshow). More about Punctured wall separates old from new at Westgarth House by Kennedy Nolan
Irish firm Donal Colfer Architects has renovated a Victorian terraced house in Dublin, adding an extension with a glazed ground floor and concrete mullions above (+ slideshow). More about Donal Colfer Architects adds concrete and glass extension to Dublin residence
The extension to this refurbished house in Australia includes a covered outdoor space built around the trunk of a large lemon-scented tree (+ slideshow). More about B.E. Architecture designs Sydney house extension around mature gum tree
A timber-clad box frames a new living area added to the heart of this house in Winchester, England, by local firm AR Design Studio (+ slideshow). More about Cedar cladding frames an extension to The Runners House by AR Design Studio
A thin metal staircase provides access to the renovated attic space of this house in Belgium by Kortrijk design studio Five AM (+ slideshow). More about Delicate staircase leads to Isle of Water attic extension by Five AM
Studio Gil used a combination of exposed concrete and reclaimed iroko wood to unite the interior of this extension to a Victorian terraced house in east London with its redeveloped garden. More about Concrete extends from the kitchen into the garden of Studio Gil's London house extension
Robert Dye Architects has shifted the entire end wall of a mews house in London's Primrose Hill neighbourhood, as part of a renovation and extension designed to bring in more natural light (+ slideshow). More about Robert Dye Architects extends a London mews house by pushing out a wall
Shards of glazing frame views of the distant mountains from the apartments inside this angular attic extension in northern Italy, designed by Plasma Studio (+ slideshow). More about Angular windows create glass shards across Plasma Studio's Schäfer Roofscape
Melbourne studio Clare Cousins Architects rearranged and extended a Victorian house in the city's St Kilda East district to create two wings for living and sleeping, either side of a dining space that opens out to the garden. More about Victorian house renovation by Clare Cousins features a courtyard dining room
Reflective stainless steel surfaces and a polished concrete floor brighten the interior of this extension to a terraced house in the Islington area of London by Architecture for London (+ slideshow). More about Architecture for London creates light-filled London extension using polished materials
Recycled bricks, corrugated cladding and oak flooring were used to build this barn-inspired extension to a house in Melbourne by Australian studio Whiting Architects. More about Whiting Architects adds utilitarian extension to Melbourne residence
This top-heavy house extension in Trondheim, Norway, was designed by local office TYIN Tegnestue to maximise space on the first floor while minimising its footprint on the garden (+ slideshow). More about TYIN Tegnestue's lopsided house extension creates extra space upstairs
Australian studio Wolveridge Architects ran a brickwork pathway through the inside and outside of this timber-clad extension to a house in Melbourne, using old bricks found in the garden (+ slideshow). More about Wolveridge Architects adds timber-clad extension to Northcote Residence
A 100-year-old house in Paris has been renovated and extended by local studio CUT Architectures to frame a garden facing the morning sun and create a shaded terrace overlooking a nearby park (+ slideshow). More about Red cedar clads extended Parisian house by CUT Architectures
Chris Dyson Architects has added a soot-washed brick extension with a curved wall to a Georgian terraced house and former nunnery in east London (+ slideshow). More about Chris Dyson's curved brick extension completes a Georgian terrace in London
The three pitched roofs of this bungalow extension in Manchester were designed by Blee Halligan Architects to capture sunlight at different times of the day and frame views of trees in the garden (+ slideshow). More about Blee Halligan's Triptych house extension catches sunlight from three directions
Canadian studio Naturehumaine inserted a glass floor and skylight to draw sunlight through the interior of this two-storey house in Montreal, and reintroduced wooden boards to make a feature of the staircase. More about Montreal house by Naturehumaine features a glass floor with a skylight overhead
Irish studio GKMP Architects added glazed white tiles to the angular walls of this extension to a semi-detached house in Dublin to help direct sunlight into the interior (+ slideshow). More about Tile-covered walls reflect light into Dublin house extension by GKMP Architects