Irish studio NOJI Architects built this angular extension to a heritage-protected Dublin house with reclaimed bricks to create a seamless transition between old and new. More about NOJI Architects uses reclaimed bricks for angular extension to historic Dublin house
Dutch studio Ruud Visser Architecten has "stretched" the length of an early 20th-century townhouse in The Hague, and added a large window with a cross-shaped wooden frame to the new rear facade (+ slideshow). More about Ruud Visser Architects extends old Dutch townhouse by two metres
London office Delvendahl Martin Architects has merged and extended a pair of Victorian semi-detached houses in Oxford to create a new double-fronted home for one family (+ slideshow). More about Delvendahl Martin Architects knocks through a pair of Victorian properties in Oxford
US architect Martin Fenlon cites the Gehry House as inspiration for the renovation and expansion of his own home – a cedar-clad bungalow in Los Angeles (+ slideshow). More about Martin Fenlon puts contemporary face on historic bungalow near downtown LA
This London house extension for a gallery director features a large round window inspired by circular voids that appear in the works of sculptor Barbara Hepworth and abstract painter Ben Nicholson (+ slideshow). More about Jimi House by Paul Archer Design features round window inspired by abstract art
This extension to a townhouse in the Dutch town of Vught by local studio Reset Architecture has a double-height window that provides views of the garden across two of the building's floors (+ slideshow). More about Reset Architecture adds modern wood and glass extension to a traditional brick townhouse
This refurbished and extended London house by local studio Neil Dusheiko Architects includes a pop-up screening room for the owner, who works for film company Universal Pictures (+ slideshow). More about Brackenbury House by Neil Dusheiko features a curved brick extension and pop-up cinema room
A pair of steel-clad volumes with pitched roofs and glazed gables provide additional living space behind the ornamental facade of this Victorian terrace in Melbourne (+ slideshow). More about Nic Owen Architects updates ornate Melbourne terrace with ribbed steel extension
A sunken courtyard brings daylight down into the new living room and study of this north London home, added by Coffey Architects in place of an old garage. More about Islington extension by Coffey Architects brings in light through a sunken courtyard
Space Group Architects has renovated a 19th-century house in east London, adding details inspired by Minimalist artists and a sunken glass-walled extension (+ slideshow). More about Space Group Architects add sunken glass box extension to heritage-listed London house
Australian architect Tim Angus has added a garden room to his mother's Melbourne residence using dark wooden rafters recycled from an old warehouse (+ slideshow). More about Melbourne Garden Room is a blackened wood extension to a century-old Edwardian house
MW Architects added a large corner window and a section of floor-to-ceiling glazing to this pair of London house extensions, to make the occupants feel like they work and shower in the garden (+ slideshow). More about Shed-like house extensions by MW Architects maximise views into a verdant garden
Scenario Architecture has completed an extension to an east London residence, featuring blackened wood cladding that references Japanese architecture, and a dedicated walkway for cats (+ slideshow). More about Blackened timber extension by Scenario Architecture features a high walkway for cats
Bureau de Change Architects gave this north London house extension a pleated ceiling to create the illusion it has been squashed onto the rear of the brick terraced property (+ slideshow). More about London extension by Bureau de Change Architects zigzags like a row of gabled houses
The windows of this extension to a 1920s bungalow in Tasmania sit within faceted timber reveals, contrasting with the white-painted weatherboard walls (+ slideshow). More about Tasmanian house extension by Preston Lane features faceted wooden window recesses
A glossy black marble wall divides the glass facade of this extension to a 19th-century townhouse in north London by local architecture office Paul Archer Design (+ slideshow). More about Paul Archer Design pairs glass with marble for extension to a remodelled London townhouse
Square windows and a matching door puncture the dark brick facade of this extension to a 1920s house in a Sydney suburb, designed by local office Tribe Studio (+ slideshow). More about Tribe Studio adds contemporary brick extension to a 1920s Sydney bungalow
This glass-fronted living room and surrounding garden have been added by New South Wales firm CO-AP on the rooftop of a house in Sydney's Darlinghurst (+ slideshow). More about CO-AP creates rooftop oasis for residents of a Sydney penthouse
The walls of this extension to a house in Melbourne feature a mismatched pattern of bricks and roof slates, sourced when part of the original building was demolished (+ slideshow). More about Bricks, doors and roof tiles recycled by Phooey Architects for Melbourne house extension
Walls of frameless glazing offer uninterrupted views of the Golden Gate Bridge and San Francisco Bay from this 1970s California house, which has been reworked and extended by local studio Swatt Miers Architects (+ slideshow). More about California home by Swatt Miers Architects faces out over San Francisco Bay