Local studio Naturehumaine has created an angular addition to a historic dwelling in Montreal, featuring dark zinc cladding that references works created by the owner, a graphite pencil artist (+ slideshow). More about Naturehumaine adds zinc-clad extension to 19th-century home in Montreal
Link Arkitektur has added a gabled extension to a 19th-century Norwegian farmhouse, featuring a wooden facade designed to age with the building (+ slideshow). More about Link Arkitektur extends Norwegian farmhouse with contemporary gabled structure
Australian firm CM Studio has added a pair of white-painted extensions to an end-of-terrace house in Sydney dating back to the 1880s, and remodelled its interiors with grey marble and pale timber finishes (+ slideshow). More about CM Studio updates 19th-century workers' cottage in Sydney with slatted timber extension
Spanish studio H Arquitectes has renovated and extended a tired mid-century school building in Catalonia, adding a new facade of concrete blocks and slatted screens (+ slideshow). More about H Arquitectes upgrades 1950s school building in Spain with a new facade
Nordic firm AART has won a competition to extend the Viking Age Museum building in Oslo, with plans to add a new curving wing to the cruciform plan (+ slideshow). More about AART to add looping extension to Oslo Viking museum
Bennetts Associates has extended a historic theatre in London's West End, adding a serrated box made from weathering steel on top of the roof (+ slideshow). More about Bennetts Associates adds pre-rusted steel box to London's Shaftesbury Theatre
GKMP Architects has extended a 1930s residence in Dublin, Ireland, using the same material palette – which even includes pebbledash. More about GKMP Architects uses pebbledash, brick and slate for Dublin house extension
London architecture studio Platform 5 has added a cranked extension to a Victorian house in Hackney, featuring a herringbone-patterned dining table that matches the parquet flooring. More about Herringbone patterns feature inside angular house extension by Platform 5
Architect Phillip Lühl has added a pair of extensions to a Modernist house in Namibia, using cement brickwork textured with the coarse fibres of hessian fabric (+ slideshow). More about Phillip Lühl uses "bagged concrete bricks" to build two extensions to a Namibia house
Global Architects has transformed the interior of a 1980s Dutch residence, by inserting a house-shaped volume that provides cosy bedrooms and secluded bathrooms (+ slideshow). More about Global Architects builds house-shaped volume inside 1980s Dutch residence
Architecture studio Tengbom has added a zinc-clad extension to a traditional brick courthouse building in the Swedish town of Alingsås (+ slideshow). More about Tengbom adds "monolithic" zinc-clad extension to Alingsås District Court
US firm Barker Freeman Design Office has renovated a slender brick row house in Brooklyn and added a two-storey extension with a glass wall overlooking a garden (+ slideshow). More about Barker Freeman overhauls narrow Brooklyn row house for a family of four
Argentinian studio Adamo-Faiden has built a greenhouse-like structure over the top of a Buenos Aires residence, in its continuing bid to make better use of the city's vacant rooftops. More about Adamo-Faiden's rooftop extension proposes a "new idea of luxury" for Buenos Aires housing
A faceted golden nodule protrudes from one side of this art studio in Warsaw, providing a secluded meditation space for Polish sculptor Pawel Althamer (+ slideshow). More about Warsaw art studio features meditation space inside "deformed golden object"
The spaces behind the iconic illuminated signs of London's Piccadilly Circus are set to be occupied for the first time since the 1950s, as part of a renovation by Fletcher Priest Architects that includes a huge rooftop extension. More about Fletcher Priest wins approval for major Piccadilly Circus redevelopment
Fibre-cement shingles cover this gabled barn in northeast France, which GENS: Association Libérale d'Architecture has converted into five apartments (+ slideshow). More about Cement shingles create scaly facade for French barn conversion by GENS
Melbourne architecture office Taylor Knights has renovated an existing Federation-style house in the city and added a contrasting contemporary extension that opens directly onto the rear garden (+ movie). More about Taylor Knights adds modern rear extension to a traditional Melbourne house
Materials and interior details are used to clearly define the old and new parts of this family home in Windsor, UK, renovated by London studio TDO (+ slideshow). More about TDO adds boxy plywood-framed extension to old Windsor cottage
Lisbon architecture office Cais has renovated and extended an outdated house in the city, preserving its existing facade and creating an open-plan interior that extends into a new terraced garden at the rear (+ slideshow). More about Renovated Lisbon house by Cais conceals modern interior behind traditional facade
Architect William Tozer applied Adolf Loos' Raumplan concept to this London house extension, which features several stepped levels that are all visually connected. More about William Tozer's split-level Raumplan House is based on the theories of Adolf Loos