10 Amazing Cantilevered House Designs

A cantilevered house is a home in which one or more rooms project beyond their supports, held up from one side only, so that part of the building hangs over a garden, a slope, a car park or water. This guide is for architecture students and homeowners who want to understand how these houses work: it explains what a cantilever is, sorts ten built examples into four structural types, and notes for each one what the overhang achieves. Project facts are checked against the architects’ published descriptions, and anything we could not confirm has been removed.

The geometry of cantilevered houses has produced some of the iconic buildings of modern architecture, and it still surprises: floors stop in mid-air and volumes cross at unexpected angles. Many of these houses sit on steep, rocky or tight plots, where lifting rooms off the ground is the practical answer rather than a stunt. For a second selection, see our list of cantilevered houses that seem to defy gravity. Engineering this ambitious is also one reason such homes appear on lists of the world’s most expensive houses.

What is a cantilever?

A cantilever is a beam, slab, truss or other structural element that is fixed or restrained at one end and free at the other. Instead of resting on supports at both ends, it carries its load back to the support through bending, so the top of the member is stretched and the bottom compressed. In practice the projecting part is balanced by a “back span” or anchored into a heavier mass, such as a core, a wall or the floor below.

Because the free end is unsupported, cantilevers are sensitive to deflection: they sag a little under their own weight and continue to creep over time in concrete. That is why engineers check stiffness and long-term movement, not only strength, and why the length of a projection is always a structural decision rather than a purely visual one. Any real design must be checked by a structural engineer against the codes that apply where it will be built.

What is the purpose of a cantilever in a house?

A cantilever lets a house gain floor area or a view without adding ground footprint. On a steep site it limits excavation; on a narrow urban plot it frees the ground for parking or a garden; on a hot site the overhang shades the floor below. Visually, a floating volume makes the building seem lighter and connects rooms with the landscape around and beneath them.

American architect Frank Lloyd Wright did more than anyone to make the cantilever part of domestic architecture. His interest in traditional Japanese buildings, where a wooden structural frame carries sliding screens and rooms flow into one another, shaped his idea of open, connected space. The Prairie Houses of the 1900s used long cantilevered roofs to stretch that space outwards.

The most famous example is Fallingwater in Mill Run, Pennsylvania (designed 1935, built 1936–1939), whose reinforced concrete terraces cantilever over a waterfall. Its history also shows the risks: the terraces deflected for decades, and in 2001–2002 the house was stabilised by post-tensioning the main girders with high-strength steel cables, as the Western Pennsylvania Conservancy’s preservation history records.

Four types of cantilevered house

The ten houses below fall into four broad structural types. This grouping is our own reading of the published drawings and descriptions, intended to help you recognise and compare cantilevered house designs; it is not a formal engineering classification.

• Box over a garden or car park: an upper storey projects from a smaller base to free the ground below (Trojan House, Lift).
• Core and branches: rooms project in several directions from a central structural trunk, keeping the footprint small on a steep site (Tree House).
• Rotated or stacked volumes: two long boxes are turned against each other so that the ends of the upper one overhang the lower one (Crossed House, Casa Las Lomas I-05, Temozón House).
• Raised or sculpted mass: a lifted volume rests on a heavy base or a few supports, and the overhang shapes the form (Cape Schanck House, Casa Para Siempre, Villa Kogelhof, House in Possanco).

Ten cantilevered house designs

1. Trojan House, Melbourne, by Jackson Clements Burrows

The Trojan House (2009) is an alteration and addition to an Edwardian house in Hawthorn, Melbourne. Instead of a standard rear box, the architects shaped a sculptural form from the site limits, including setback rules along the south boundary and the roofline of the existing house. A continuous timber skin wraps roof, walls and windows. According to the project description in Habitus, three children’s bedrooms and a bathroom cantilever above the garden and a large living space below.

2. Tree House, Separation Creek, by Jackson Clements Burrows

The Treehouse is a two-storey house of about 220 m² (2,370 sq ft) on a steep, forested hillside above the Great Ocean Road at Separation Creek, Victoria, Australia. The architects took the form of a tree with branches: rooms cantilever in several directions from a central structural trunk, as the project description explains. Keeping the footprint small solved the engineering problem of the slope and reduced disturbance to the bush, and the colour scheme helps the house recede into the trees.

3. Cape Schanck House, Victoria, by Jackson Clements Burrows

The Cape Schanck House sits on a high dune at Cape Schanck on the Mornington Peninsula, Victoria. Its main upper form was conceived as a hollowed-out log and contains the kitchen, dining and living spaces, garage and laundry. The angled profile rises from the hill at ground level to a ridge and then falls away to the west, and the pale exterior echoes the tea-tree scrub of the dunes, so the overhanging structure reads as part of the landform.

4. Lift, Sendai, by Apollo Architects & Associates

Lift (2010) is a compact timber house in a residential district of Sendai, Japan. Its upper floor projects over parking for two cars on a narrow street frontage without pilotis or other columns, as Dezeen’s project report describes. The street side is largely closed for privacy, with slatted louvres filtering light, while the main living spaces face an internal courtyard that brings open space into the small volume.

5. Casa Las Lomas I-05, Cerro Azul, by Vértice Arquitectos

This beach house of about 240 m² (2,580 sq ft) stands on a rocky, sandy hill in the Lomas del Mar development at Cerro Azul, roughly 120 km (75 miles) south of Lima, Peru. It is built from two parallel volumes, one set about 1.2 m higher than the other so both see the sea, joined by a main circulation axis that ends at a swimming pool above the beach. Cantilevers extend the usable area beyond the hilltop, and the master bedroom and its terrace are turned towards the ocean, according to Floornature’s project page.

6. Casa Para Siempre (House Forever), Lima, by Longhi Architects

Designed and built in 2011–2013 in La Planicie, in Lima’s La Molina district, this house was commissioned by a couple who wanted a home for the rest of their lives; the architects called it a “container of life”. A base of black stone, treated as if carved from an ancestral rock, holds the living spaces and built-in furniture, and the bedrooms sit in volumes that cantilever above it. e-architect’s project page gives a built area of about 550 m² on a 1,045 m² site.

7. Villa Kogelhof, Noord-Beveland, by Paul de Ruiter Architects

Completed in 2013 in Noord-Beveland, the Netherlands, Villa Kogelhof is a glass box raised on a V-shaped steel frame and a circulation core, so most of the living floor overhangs the ground. A second volume below ground, roofed by a shallow pool, holds parking and service spaces. The house was designed to generate its own energy, with photovoltaic panels on the roof, and as a condition of permission the 25-hectare plot was returned to nature, as Baunetz Wissen’s project report describes. Its gross floor area is about 715 m².

8. Crossed House, Murcia, by Clavel Arquitectos

The Crossed House near Murcia, Spain, designed by Manuel Clavel Rojo, is the clearest example of the rotated-volume type. Two oblong concrete volumes, each about 20 m long and 5 m deep, are stacked and rotated 35 degrees to each other, so the upper storey cantilevers about 10 m over its base, as Dezeen reports. The lower floor looks into the garden, the upper one towards the mountains, and the overhangs shade the facades and the pool.

9. Temozón House, Yucatán, by Carrillo Arquitectos y Asociados

This private residence in Temozón, Yucatán, Mexico, has a reported area of about 1,167 m² (12,560 sq ft). Its plan began as an L-shape around a central garden; one wing was then rotated 45 degrees to catch the prevailing winds and improve cross-ventilation, according to the architects’ description as published. The rotation opens the garden into the house and creates the cantilevered living volume with its stepped terraces.

10. House in Possanco, Comporta, by ARX Portugal Arquitectos

The last cantilevered house on the list is a weekend house of about 250 m² (2,690 sq ft) at the edge of the village of Possanco, near Comporta in Portugal, by José and Nuno Mateus of ARX Portugal with Stefano Riva, built in 2008–2009. The site lies between the village and protected farmland. The all-white house draws on the traditional architecture of the Alentejo; four courtyards are cut into its asymmetrical roof, and a triangular cantilever opens towards the plain, as Dezeen’s project report describes.

Regional differences in cantilevered houses

The examples show how climate and site shape the type. In coastal Peru and southern Spain, the overhang is above all a shade device for the facade and pool. In Australia’s coastal bush, cantilevers keep the footprint small on steep, fire-prone slopes. In dense Japanese neighbourhoods, a cantilevered upper floor is a way to fit parking onto a narrow plot. In the Netherlands, Villa Kogelhof lifts a glass pavilion above a restored landscape. Seismic regions such as Japan and Peru add a further structural demand, because a heavy projecting mass must also resist horizontal earthquake forces; the relevant national codes govern how far it can go.

Designing a cantilevered house: the main checks

• Back span and anchorage: decide early where the projecting load goes, whether into a core, a heavier storey below, deep walls acting as beams, or a steel frame.
• Deflection and creep: concrete cantilevers keep moving for years, as Fallingwater showed; stiffness, camber and long-term monitoring matter as much as strength.
• Vibration and comfort: long, light floors can feel bouncy; the engineer should check this alongside strength.
• Thermal envelope: the underside of an overhang is an exposed floor that needs insulation and detailing against thermal bridges.
• Local rules: planning setbacks, wind and seismic codes vary by country and decide what is buildable.

Conclusion

A good cantilevered house is not just a dramatic overhang: it uses the projection to solve a problem, whether a steep slope, a tight plot or the need for shade. When studying an example, ask which of the four types it belongs to, where its load goes and what the overhang gives the people inside. For more precedents, explore our further selection of cantilevered houses linked above.

Sources and further reading

• Western Pennsylvania Conservancy, Fallingwater preservation history.
• Project reports for each house, linked in the text (Habitus, Architecture Lab, Dezeen, Floornature, e-architect, Baunetz Wissen, One Kindesign).