A sliver of glazing separates a white house in Stuttgart from this black extension Holzer Architekten designed to create additional living spaces with plentiful garden views for its owners. More
Chicago-based firm Studio Gang has revealed plans to add a series of glazed pavilions with pleated roofs to an arts centre in Arkansas, as part of a major renovation and extension project. More
A vivid orange stairwell and a canted glass facade are among the modifications that US studio Fougeron Architecture has made to a century-old house in San Francisco. More
This extension to an historic villa in the Swiss town of Arlesheim by Basel-based studio HHF Architects features an expressed steel frame intended to provide a contemporary counterpoint to the house's traditional architecture. More
Nick Deaver Architects has added a corrugated metal extension to the rear of a bungalow in Texas, along with a new dining area with floor-to-ceiling windows. More
Jamie Fobert Architects has completed an extension to Kettle's Yard gallery in Cambridge, England, adding a series of new exhibition and education spaces that complement the intimate and relaxed rooms of the original converted house. More
Steel frames stand out against the white interior of this extended house in Whistler, where Canadian firm Stark Architecture has also updated the existing residence and clad the whole building in black. More
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
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
Stanton Williams has completed a four-storey addition to a business school at the University of Cambridge, England, which features social and circulation areas that adjoin an existing historic building and are illuminated by large roof lights. More
British architecture practice Studio Carver has completed a timber and glass extension to a house in north London that was inspired by traditional wooden conservatories found in the American Midwest. More
Designer Tom Givone has overhauled a farmhouse in rural New York, with the addition of a glass-fronted extension overlooking a creek. More
Spanish practice SelgasCano has extended the roof of the Second Home offices in east London, creating five studios with winding desks, and a terrace with a serpentine border of aquatic planting. More
A team of Spanish architects has modernised a 19th-century psychiatric centre in the city of Pamplona by adding a series of structures with gabled profiles that reference the forms of the existing buildings. 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
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
Foster + Partners has unveiled plans to add a glazed terminal building to Marseille Provence Airport, which will link the 1990s extension designed by Richard Rogers with the original 1960s building. More
Dutch firm UNStudio has unveiled plans for a "user-oriented" extension to its Kutaisi International Airport terminal in Georgia, featuring a rooftop plaza. 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