Slate-grey bricks applied in zigzagging rows give the walls of this London house extension a faceted texture that contrasts the smooth, pale yellow brickwork of the original property (+ slideshow). More about Fraher Architects includes textured brick cladding on north London house extension
A colossal iron staircase bursts through the medieval stone walls of this fortified tower in rural Italy and into a copper-clad extension, as part of a renovation by local studio Gianluca Gelmini (+ slideshow). More about Gianluca Gelmini inserts an angular iron staircase inside a medieval Italian fortress
A sliver of glazing stretches all the way up from the ground to the roof of this extension to a west London house, which is named The Lantern in reference to the way it glows at night (+ slideshow). More about Fraher Architects completes an extension with a window that stretches up to the roof
This extension to a home in Kortrijk, Belgium, was added by local architect Steven Vandenborre to wrap around the property's outdoor swimming pool (+ slideshow). More about Concrete and glass extension to Belgian house shelters a poolside patio
A cluster of glass pavilions positioned around the base of this existing Melbourne house open onto terraces that are sheltered by a copper-edged canopy (+ slideshow). More about B.E. Architecture adds gridded glass rooms to a Melbourne residence
Pre-rusted steel clads this L-shaped extension to a farmhouse in rural Canada, giving the block a burnt orange colouring that complements the red brickwork of its neighbour (+ slideshow). More about Superkül extends Canadian farmhouse with rusty Corten-clad block
This concrete pod with faceted sides and a glass facade is perched up over a courtyard, creating an extension to a house in Mexico that doesn't compromise its existing outdoor spaces (+ slideshow). More about Faceted concrete capsule by Noborders Collective extends a Mexican residence
Melbourne studio Make Architecture has renovated a red brick bungalow outside the city, adding an extension featuring a decorative timber facade that references brickwork patterns (+ slideshow). More about Make Architecture adds perforated wooden facade to renovated and extended Melbourne house
This London house extension features a red brick exterior thought to look like a profile of a fox and a multi-hued interior that references Adolf Loos' Modernist houses of the 1920s (+ slideshow). More about David Kohn's Sanderson House extension conceived as a fox in the garden
The sloping roofline of an old extension to a London residence is surrounded by the pale brickwork of its replacement, designed by local studio Tsuruta Architects (+ slideshow). More about Remodelled London house extension reveals the outline of its predecessor
This blackened plywood box added by architect Antonin Ziegler to one end of a rural home on France's northern coast provides a private library and garage for its inhabitants (+ slideshow). More about Blackened timber reading room extends a coastal home in northern France
A sloped section of roof joins this timber-clad extension by Melbourne studio Julie Firkin Architects to the adjacent weatherboard house (+ slideshow). More about Triangular void connects a two-storey timber extension to a Melbourne bungalow
Slender batons of untreated larch cover two extensions erected in the garden of this semi-detached home in London, as part of a refurbishment and remodelling by architecture studio Haptic (+ slideshow). More about Haptic adds a pair of extensions to a Victorian home in west London
A cylindrical tower clad in weathered steel forms part of this extension to a 19th-century stone cottage in the English countryside, designed to recall a gasworks that previously stood on the site. More about Chris Dyson Architects adds a rusty steel tower to a rural stone cottage
The residents of a house in Melbourne have allowed architect Andrew Maynard to reveal their living spaces to passers-by, with a timber-framed extension that slots into the perimeter fence (+ slideshow). More about Melbourne house extension by Andrew Maynard presents a living room to the street
A living room is contained within this glazed extension to a period property in Dublin, forming a transparent connection between the existing building and its garden. More about Glazed house extension by GKMP Architects "feels like part of the garden"
A small extension to the rear of this remodelled townhouse in Dublin is clad and roofed in panels of opaque black glass, designed by architectural studio Ailtireacht to reflect the building's surroundings. More about Black glass box forms a reflective extension to a Victorian townhouse in Dublin
Australian studio Mihaly Slocombe has returned to a Melbourne home it completed almost a decade ago to add a timber nursery annex patterned with circular cutouts (+ slideshow). More about Mihaly Slocombe extends vineyard home in Australia with wooden nursery
This red-painted timber-clad extension was added to the rear of an old stone farmhouse in Portugal, framing a new courtyard at the centre of the family home (+ slideshow). More about Pitágoras Arquitectos adds red timber wing to stone farmhouse in rural Portugal
This extension to a Victorian house in London features a decorative wooden ceiling, exposed brickwork and a dining space that opens out to a garden filled with bushy plants (+ slideshow). More about Gort Scott adds timber-framed extension to 19th century Victoria Park house