2×40 cantilevered container as an annexe: 59.4 m²
Stacked cantilever with a terrace. Anyone who wants a house with “architecture” and a terrace, and accepts paying for the structure.
The space standard applies only where your council has adopted it in its Local Plan. Check with the council and an architect before you choose a plan.
How much it costs
Between £85,014 and £115,019, VAT included and a ±15% margin. Balanced finish, one-trip containers, residential plot with water, power and drainage. The land is not included.
Container prices from UK depots (2025–2026) and building work with UK factors on the Contentar engine, checked in November 2026. VAT at 20%. Excludes land, heat pump, solar panels, warranty, CIL and stamp duty.
It includes 22% more than the same area in simple containers. 3 m cantilever (transfer beams ~1.5× the cantilever running back), floor cut-out for the stairs, waterproofed terrace: ~+18–25%.
Build complexity: complex.
For and against
For
- The 3 m cantilever covers a deck or parking space and the setback creates a 7 m² terrace on floor 1.
- Internal stairs: a continuous house, no going outside; the office uses the strip next to the stairwell.
- 59.4 m² built: the only 1-bedroom plan in the series above 50 m².
Against
- The top container does not sit corner on corner: it needs transfer beams and a structural engineer.
- Opening 3.2 m of floor and roof for the stairs needs reinforcement; a terrace on steel sheet needs careful waterproofing.
Sun orientation
Cantilever to the east (morning shade on the deck), terrace to the west with a pergola; main openings to the south.
Adjust the finish, used or new container and the land, and see the cost line by line.
Work out my cost UK guide · join the waiting listSee this plan in 3D on Contentar
Other plans
- 1×20 container as an annexe: 14.8 m²Annex in a 20 ft container · £30,698–£41,532
- 1×40 container as an annexe: 29.7 m²Studio in a 40 ft container · £42,063–£56,909
- Container home 2×40: 1 bedroom, 59.4 m²1 bedroom · two 40 ft side by side · £78,046–£105,591
- Container home 3×40: 2 bedrooms, 89.2 m²2 bedrooms · three 40 ft side by side · £110,928–£150,078
- Container home 4×40: 3 bedrooms, 118.9 m²3 bedrooms · four 40 ft side by side · £144,913–£196,060
- Container home 2×40 + 1×20 L-shaped: 2 bedrooms, 74.2 m²L-shaped 2 bedrooms with a patio · £92,681–£125,390
- Container home 4×40 H-shaped: 3 bedrooms, 118.9 m²H-shaped 3 bedrooms with two patios · £147,412–£199,440
- Container home 3×40 duplex: 2 bedrooms, 89.2 m²2-bedroom duplex, one 40 on top · £113,847–£154,027
- 1×40 + 1×20 with decking container as an annexe: 44.5 m²40 + 20 ft with decking · £59,228–£80,131
- 2×20 L-shaped container as an annexe: 29.5 m²Two 20 ft in an L · £50,709–£68,607
- 2×40 cantilevered container as an annexe: 59.4 m²Stacked cantilever with a terrace · £85,014–£115,019