A staircase punctured with rectangle-shaped holes is the focal point of this two-storey extension Grey Griffiths Architects has added to a workers' cottage in west London. More about Step House extension built around perforated birch-ply staircase
Architecture studio Morris + Company has designed an extension for the self-built home of Walter Segal in north London that is "a direct homage" to the architect's body of work. More about Morris + Company to extend Walter Segal's former London home
Architecture practice Fraher & Findlay has renovated and extended a home in east London, adding a small courtyard that offers glimpses of old and new parts of the property. More about Tsubo House in Hackney features tiny Japanese-style courtyard
A half-arch window in this east London home extension by Yellow Cloud Studio offers glimpses of the older parts of the property. More about Yellow Cloud Studio punctuates Glyn House extension with arched window
Szczepaniak Astridge has added a rooftop extension to Leaf House, a terrace in south London for architectural photographer Edmund Sumner and writer Yuki Sumner. More about Szczepaniak Astridge focuses London loft extension on timber bath
Architecture studio Alma-nac has extended and added a second grey-brick skin to a 1950s property in Brockley, south London to create a contemporary family home. More about Alma-nac wraps London home in brick to create House-within-a-House
Will Gamble Architects has updated a house in west London with an extension modelled on a Japanese tea house. More about Burnt House is a charred wood extension that looks like a Japanese tea house
Oliver Leech Architects has extended a house in south London, adding a kitchen that pairs natural wood and brick with a muted colour palette. More about Oliver Leech Architects uses soft colours to create bright and airy kitchen extension
San Francisco studio John Lum Architecture has contrasted the look of this cottage-style house in the city with a steel-and-glass extension at the back. More about John Lum Architecture reimagines charming San Francisco home with modern extension
Reclaimed materials feature alongside brightly painted new spaces in this transformation of two Victorian maisonettes in London by Studio 30 Architects. More about Studio 30 Architects remodel London home using reclaimed materials
A "beautifully understated" rear extension by Proctor & Shaw has been named as London's best new home improvement project at the 2020 Don't Move, Improve! awards. More about Proctor & Shaw's Soffit House extension wins Don't Move, Improve! 2020
An experimental brick extension, a house with fir-lined reading nooks and an apartment covered in 30,000 wooden blocks are three of the projects vying to be named London's best home improvement of 2020. More about Don't Move, Improve! 2020 shortlist names London's best house extensions
A hidden roof terrace and minimal wood-lined interiors are among the features that Cathie Curran and O'Sullivan Skoufoglou Architects have added in an overhaul of this north London house. More about Hidden roof terrace added to North London townhouse
Architecture studio CAN has added a blue and white striped extension to a Victorian terrace in London, which features a statement pink curtain. More about CAN adds blue and white striped extension to London house
Rise Design Studio has sunk a weathered steel-clad extension in the garden of a London house as a sanctuary from the UK's Brexit-dominated political climate. More about Sunken steel-clad Brexit Bunker built in garden of London house
Larch planks finished with matt black barn paint were used to clad this extension of a Victorian terrace in London, designed by architect Harry Thomson. More about Black-painted larch planks clad extension to a house in London
Flow Architecture and Maria Grazia Savito Architects have wrapped timber slats around the lightwell of a Victorian house conversion in Kensington, London. More about Flow Architecture lines stairwell of London house conversion with timber slats
Tsuruta Architects has topped a conservatory extension in London with a faceted timber and glass roof that casts zigzag shadows over a wood-lined dining space. More about Faceted roof casts zigzagging shadows over London house extension
Four sculptural, brick columns frame this small extension to a Georgian terrace in north London, designed by local practice Urban Mesh for the firm's director, James Beazer. More about Twisting brick columns support London terrace extension by Urban Mesh
Angular three-dimensional tiles have been used to create textural interest inside and out at this south London house extension, designed by architecture studio Proctor & Shaw. More about Proctor & Shaw use faceted 3D tiles to create "rhythmic" London house extension