The top home extensions of 2025
Next up in our 2025 review, we take a look at the most popular residential extensions featured on Dezeen this year, from standalone annexes to loft extensions. More about The top home extensions of 2025
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Sam Crawford reorganises 1950s Sydney home around multifunctional staircase
Australian studio Sam Crawford Architects has renovated and extended Waverley House in Sydney, reorganising the home around a timber staircase with nooks for sitting and relaxing. More about Sam Crawford reorganises 1950s Sydney home around multifunctional staircase
DGN Studio uses sandstone bricks in north London home extension
Stone bricks form the multi-textural walls of this family home extension in London's Highbury area, designed by DGN Studio in collaboration with creative director Sarah Izod. More about DGN Studio uses sandstone bricks in north London home extension
Exposed blockwork walls introduce "earthy tone" to THISS Studio's Butterfield extension
The walls of this extension to a post-war terraced house in north London were made from interlocking clay blocks that local firm THISS Studio left exposed to create a warm and textural finish. More about Exposed blockwork walls introduce "earthy tone" to THISS Studio's Butterfield extension
Twisting slate roof tops coastal Latvian home by Made
A curving slate roof intended to evoke a sand dune tops The Pāvilosta House, an annexe to a home on Latvia's western coast by local architecture studio Made. More about Twisting slate roof tops coastal Latvian home by Made
Mecozzi Verdini connects Italian villa to concrete annexe using red-steel walkway
A red-steel walkway links this 1960s villa in Italy's Marche region to a concrete-framed annexe called Annesso Rosso, completed by local architecture studio Mecozzi Verdini. More about Mecozzi Verdini connects Italian villa to concrete annexe using red-steel walkway
Copper extension signals "new generation of architecture" for Sussex home
The patchwork of architectural styles at the rear of the 19th-century Hops House in Sussex encouraged Jackson Design Studio to add a distinctly contemporary extension clad in copper. More about Copper extension signals "new generation of architecture" for Sussex home
Cera Stribley shelters cottage extension with curved timber ceiling
A curved, timber-lined ceiling shelters the fully-glazed living spaces of Harvest House, the extension and renovation of a worker's cottage in Australia by architecture studio Cera Stribley for its founder. More about Cera Stribley shelters cottage extension with curved timber ceiling
Sawtooth-roofed extension with "factory-like aesthetic" added to Ghent home
Local studios Atelier Avondzon and Macadam Atelier have renovated a derelict home in Ghent, Belgium, adding a sawtooth-roofed extension clad in corrugated-metal panels. More about Sawtooth-roofed extension with "factory-like aesthetic" added to Ghent home
"Intricate craftsmanship" revives modernist Vejrhøj summerhouse in Denmark
Architecture practices Studio Marshall Blecher and Jan Henrik Jansen Arkitekter have renovated a 1960s summerhouse in Denmark, adding a standalone extension that mimics its original form and thatched roof. More about "Intricate craftsmanship" revives modernist Vejrhøj summerhouse in Denmark
Bureau de Change adds yellow-brick extension to W House in London
Architecture studio Bureau de Change has revamped a Victorian house in Fulham, London, adding an extension with angular brick cladding that has "a sense of movement". More about Bureau de Change adds yellow-brick extension to W House in London
Pinzauer transforms historic Hampstead home with concrete-framed pavilion
An exposed concrete-framed extension frames views across a garden and sunken studio at this Victorian townhouse in Hampstead, converted into apartments by local architecture studio Pinzauer. More about Pinzauer transforms historic Hampstead home with concrete-framed pavilion
Studio Bressan updates and expands traditional stone farmhouse in Italy
Italian practice Studio Bressan has restored and extended a historic farmhouse in Treviso, expanding its portico into a spacious, glazed dining room that blends contemporary and traditional materials. More about Studio Bressan updates and expands traditional stone farmhouse in Italy
Pedro & Juana creates wooden tunnel staircase to bridge Mexico house extension
Mexican architecture studio Pedro & Juana has opened up the roof of a Valle de Bravo house to install a pine staircase, which connects to a residential extension higher on the site. More about Pedro & Juana creates wooden tunnel staircase to bridge Mexico house extension
Atelier Baulier extends London home using "frugal and honest" materials
An approach of "frugality and honesty" informed the minimally-finished plywood and plaster surfaces of Twin Pitches, the renovation and extension to a home in London by local studio Atelier Baulier. More about Atelier Baulier extends London home using "frugal and honest" materials
James Grayley Architecture finishes Suffolk cottage extension with "hairy shingle exterior"
London studio James Grayley Architecture has used red bricks, oak shingles and terracotta floors to give a rustic character to its extension of Church Cottage, an old farmhouse in Suffolk, UK. More about James Grayley Architecture finishes Suffolk cottage extension with "hairy shingle exterior"
Lovell Burton lines Carlton Cottage extension with rotating walls
Australian studio Lovell Burton has extended a 19th-century workers' cottage in Melbourne for its founders, "loosely demarcating space" with sliding walls and rotating glass doors. More about Lovell Burton lines Carlton Cottage extension with rotating walls
EBBA extends London home with basalt blocks offering "tactile richness"
Raw blocks of grey basalt stone bring tactility to this minimalist home extension in London, designed by local architecture studio EBBA. More about EBBA extends London home with basalt blocks offering "tactile richness"
Studio McW turns London home into a "space primed for hosting"
Open-plan entertaining spaces equipped with a marble kitchen island and skylit dining table occupy the heart of this London home renovated by Studio McW for the founders of a luxury catering company. More about Studio McW turns London home into a "space primed for hosting"
Pend wraps extension to historic Scottish home in fluted pink-toned stonework
Scottish architecture studio Pend has updated a heritage-listed Georgian farmhouse in East Lothian, adding an extension clad in fluted, blush-toned blocks of precast stone. More about Pend wraps extension to historic Scottish home in fluted pink-toned stonework