Paz Arquitectura has extended a small cabin on the outskirts of Guatemala City, flanking the existing structure with two additional volumes connected by a terrace and a glass walkway. More about Paz Arquitectura expands Guatemala forest retreat with new living spaces and huge terrace
A steel grid containing 102 olive trees fronts this extension to a house in Bangkok, designed by locally based architecture office Anonym. More about Flower Cage House is a Bangkok home with a facade of olive trees
Atelier Pierre Thibault has created an addition to a 1950s residence in Canada, providing its occupants with a new living room, studio, and garage. More about Atelier Pierre Thibault extends ageing Montreal home with double-height living space
Architecture office Al-Jawad Pike used pigmented concrete blockwork for the exterior and interior of this two-storey extension to a Victorian house in south London. More about Al-Jawad Pike combines robust and affordable materials for extension to Peckham house
A team of local architects has added new amenities to a temple school in rural Thailand, using affordable materials and parts of an existing building to keep project costs down. More about Buddhanimit Temple extension contains dormitory for novice monks
Architecture firms Herzog & de Meuron and Beyer Blinder Belle have been enlisted to renovate and expand the main building at Harvard's Graduate School of Design, in order to support "groundbreaking collaborations" between its programmes. More about Herzog & de Meuron to overhaul Harvard GSD's Gund Hall
Edward Ogosta Architecture has renovated a 1940s house in California with light-filled white interiors and a master bedroom extension overlooking the garden. More about Edward Ogosta brightens Californian bungalow with Rear Window House extension
A subterranean museum below architect Eero Saarinen's iconic arch in St Louis has been renovated and expanded by three architecture firms, as part of an effort to rejuvenate the area around the monument. More about Eero Saarinen's Gateway Arch museum undergoes revitalisation in St Louis
Tod Williams and Billie Tsien's major extension and renovation of postmodern architect Charles Moore's Hood Museum of Art, in New Hampshire, will involve slotting in a pale brick building and covering a central courtyard. More about Tod Williams Billie Tsien's Hood Museum overhaul will "knit together" its postmodern predecessor
The New York City Landmarks Preservation Commission has approved Selldorf Architects' renovation and expansion plans for the city's Frick Collection museum, despite ongoing protests against the "harmful" project. More about Expansion of New York's Frick Collection gains approval amid protests
American designer Geoffrey von Oeyen has created a home office in southern California that features wooden exterior walls and a highly abstracted sawtooth roof. More about Geoffrey von Oeyen designs jagged-roof office addition for Malibu home
Netted balustrades, a tiled studio-cum-playroom and roof lights all feature in this renovated and extended Brooklyn home, designed by VonDalwig Architecture. More about Skylights and voids bring daylight into extended Brooklyn row house
Costa Rican architecture firm Studio Saxe has expanded an existing residence with hotel rooms and a pool to create a new resort in the beach town of Nosara. More about Studio Saxe transforms Costa Rican lodge into The Gilded Iguana surf resort
Uruguayan architect Rafael Viñoly has revealed plans to add a glazed extension and rooftop garden to a 1920s building in Manhattan, as part of a major overhaul that will create automobile showrooms and office spaces. More about Rafael Viñoly unveils renovation and extension for art-deco car showrooms in New York
Swiss studio Manuel Herz Architects has unveiled plans to extend Tambacounda Hospital in Senegal, with a snaking building featuring perforated brick walls. More about Manuel Herz Architects plans S-shaped extension to Senegalese hospital
Austin Maynard Architects has created a "forever home" for a family of four, by overhauling a dilapidated horse stable, building a curved extension and planting a new garden. More about Converted stable and "pocket park" feature in revamped Melbourne house by Austin Maynard Architects
American studio Feldman Architecture has renovated and expanded a cottage just outside of San Francisco, adding a two-storey extension, a pool terrace and a garage blanketed with a green roof. More about Feldman Architecture completes The Shack nature retreat for creative couple in California
Inglis Badrashi Loddo Architects has completed a single-storey extension to a Victorian house in north London, featuring a glazed wall and skylights that allow daylight to flood into a new kitchen and dining space. More about Glazed extension connects refurbished Highbury house with new patio garden
This extension to a Canadian cottage by Montreal studio ACDF Architecture echoes the traditional language of the original home, but executed with contemporary geometry and finishes. More about Lakeside cottage extension by ACDF takes cues from traditional neighbour
Texas studio Matt Fajkus Architecture used wood, stucco and glass to form an extension to a 1960s dwelling on a sloped site overlooking a creek. More about Matt Fajkus creates office addition for mid-century Austin home