A revamped Georgian townhouse with a patio that transforms into a reflecting pool has won top prize in a contest to find the best new house extensions in London. More
Oslo-based architecture office Skapa has transformed a tired villa near the Norwegian capital into a contemporary home featuring full-height glazed walls that open up to views of the surrounding trees and seascape. More
Pale brickwork, oak furnishings and terrazzo flooring combine in this light-filled extension to a Victorian house in London's Shepherd's Bush, designed by architecture studio Al-Jawad Pike. More
Architect Dominic Pandolfini has more than tripled the size of his once run-down home in Melbourne, by adding a contemporary extension clad with zinc. More
This extension to a house in Taoyuan City, Taiwan, contains independent living spaces for two brothers, which are connected by a glazed corridor that traverses a narrow plant-lined courtyard. More
Designer Tom Givone has overhauled a farmhouse in rural New York, with the addition of a glass-fronted extension overlooking a creek. More
Rain can fall through a cut-out in the concave roof of this London house extension by Tonkin Liu, animating a shallow pool of water beneath. More
San Francisco studio Klopf Architecture has renovated and expanded a mid-century modern home in northern California that was built by pioneering post-war real-estate developer Joseph Eichler. More
Self-taught designer Tom Givone has extended a white house in rural America with a warped metal-clad addition that starkly contrasts the traditional architecture. More
O'Sullivan Skoufoglou Architects has rearranged the ground floor of a Victorian terraced house in north London and introduced a material palette to the extended space that complements the original brick walls. More
Jonathan Tuckey Design has revealed plans to extend the former home of Walter Segal with an addition like an "overgrown ruin", while Turner Prize-winning collective Assemble has designed a shed for the garden. More
London-based practice Yellow Cloud Studio has designed a triangular-planned glass and plywood extension for a Victorian house in Hackney that makes a virtue of its awkward space. More
Post Office Architectes has added a timber-lined barrel vaulted roof extension to an apartment in Paris, giving its owner an unobstructed view of the Eiffel Tower. More
This faceted extension added to a holiday residence in Spain's Alicante region features plywood-lined interiors and a picture window angled to frame a view of a nearby watchtower. More
A timber-lined loft renovation, a seven-square-metre extension and a triangular room feature among the 30 projects shortlisted in a competition to find London's best home extensions. More
Rural Office for Architecture used locally available materials and a single russet hue to ensure this cluster of service buildings and a rear extension to a smallholding in mid Wales fit in with their agrarian setting. More
The founder of MW Architects used black-blue engineering bricks to add an extension of just seven square metres to his renovated London home. More
Canadian architect Natalie Dionne has attached a geometric extension onto the back of a brick townhouse in Montreal, to include more space in the kitchen and a balcony for the master bedroom. More
Canadian studio Naturehumaine has extended a house in Montreal to create a family living area and an elevated master bedroom, which are all encased in a large grey frame that offers privacy from neighbours. More
Mexican architecture studio Productora has attached a two-storey steel unit onto the back of a bungalow in California to add more living space. More