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Performance

Comparison of 1m² wall area, including cladding, insulation and finishes
A cross section of a cavity wall made of bricks and concrete blocks. On the inside, plasterboard fixed to battens.

Brick & block

Cost
£230
U-value¹
0.2 W/m²K
Upfront carbon
20 kgCO₂e
Mass
260 kg
A cross section through a section of wall made of Structural Insulated Panels (SIPS). In the middle white polystyrene insulation. On the outside, timber cladding. On the inside, plasterboard on battens.

SIPs

Cost
£240
U-value¹
0.16 W/m²K
Upfront carbon
-40 kgCO₂e
Mass
75 kg
A cross section through a wall made of WikiHouse. The plywood chassis is filled with natural insulation. On the outside, timber cladding. On the inside, plasterboard.

WikiHouse

Cost
£230
U-value¹
0.15 W/m²K
Upfront carbon
-70 kgCO₂e
Mass
70 kg
¹ U-value is a measure of how much heat is lost through the wall.
Data sources checkatrade.com, product EPDs, ICE V3 database, WikiHouse manufacturing data

Performance

WikiHouse in comparison to brick construction

Annual space heating cost

4450 kWh
£1558
1911 kWh
£669
Brick
WikiHouse
*Cost based on electric-only heating

Fabric heat loss

Image of heat loss from brick wall
Brick
0.18 W/m²K
Image of heat loss from WikiHouse wall
WikiHouse
0.14 W/m²K

Typical overall build cost

£2500/m²
£1500/m²
£2500/m²
£1500/m²
Brick
WikiHouse

Upfront carbon cost

30 T CO₂
-17 T CO₂
Brick
WikiHouse

Project build time

Brick
12-24 weeks
Wikihouse*
4-12 wks
* The chassis itself should take 2-4 days

Reusable parts

Brick
10%
WikiHouse
80%
Based on a 2 storey, 2 bed house in the UK. Energy & carbon modelling by Leeds Beckett University.

Performance

£2000/m²
£1400/m²
£2000/m²
£1400/m²
Brick
WikiHouse
Based on a 2 storey, 2 bed house in the UK using electrical power. Energy & carbon modelling by Leeds Beckett University.

Manufactured to 0.1mm precision.

WikiHouse blocks are digitally fabricated using a CNC machine to the nearest fraction of a millimetre. The result: a building you can even assemble yourself, but with the precision of a German car.

Rapid, simple assembly

WikiHouse Skylark can be rapidly assembled on site, even by small teams with no traditional construction skills. The blocks slot and peg together, making it possible to go from foundations to weatherproof envelope in 2-4 days.
Read our general assembly guide
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Carbon negative.

Brick, steel and concrete buildings emit many tonnes of carbon in their production. By contrast, responsibly-grown wood actively captures carbon from the atmosphere and stores it, so your project will be not just carbon zero, but carbon negative.
Read the full report
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Will it meet building regulations?

So long as it is correctly designed and detailed, WikiHouse will exceed the requirements of UK building regulations. Your building inspector will need a signed set of calculations by a qualified structural engineer. We have published a guide and testing data to help structural engineers check schemes. You can also use our structural checking service.
Guide for structural engineers
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OSL / Real living homes

Will I be able to get a mortgage?

Yes. To get a mortgage on a new build home in the UK you need to get a building warranty (10 year defects insurance). The premium will add a small cost to your project but it will allow you or your buyers to get a mortgage if you need one.

What types of project is it suited to?

Detached

Row

Flats

Inserts

Building types

A tick mark. Means yes, you can do this.
A tick mark. Means yes, you can do this.
A cross. Means no, you can't do this.
A tick mark. Means yes, you can do this.

Home

1 storey

2 storeys

3 storeys

4+ storeys

Office

School

Café

Industrial / storage

Garage

A tick mark. Means yes, you can do this.
A tick mark. Means yes, you can do this.
A tilde. Means it depends, you may be able to do this but there are limitations, or it may depend on the circumstances.
A cross. Means no, you can't do this.
A tick mark. Means yes, you can do this.
A tick mark. Means yes, you can do this.
A tilde. Means it depends, you may be able to do this but there are limitations, or it may depend on the circumstances.
A cross. Means no, you can't do this.
A tick mark. Means yes, you can do this.
A tick mark. Means yes, you can do this.
A tilde. Means it depends, you may be able to do this but there are limitations, or it may depend on the circumstances.
A cross. Means no, you can't do this.
A tick mark. Means yes, you can do this.
A tick mark. Means yes, you can do this.
A tilde. Means it depends, you may be able to do this but there are limitations, or it may depend on the circumstances.
A cross. Means no, you can't do this.
A tick mark. Means yes, you can do this.
A cross. Means no, you can't do this.
A cross. Means no, you can't do this.
A cross. Means no, you can't do this.
A tick mark. Means yes, you can do this.
A cross. Means no, you can't do this.
A cross. Means no, you can't do this.
A cross. Means no, you can't do this.
The number of storeys you can build up to will depend on wind levels, the width of your building and the number of bracing walls in your design. See the design guide for more detail.

Flat

Sloping

Rooftop

Below ground

Sites

A tick mark. Means yes, you can do this.
A tick mark. Means yes, you can do this.
A tick mark. Means yes, you can do this.
A cross. Means no, you can't do this.

Straight

Irregular

Angular

Curved

Plan forms

A tick mark. Means yes, you can do this.
A tick mark. Means yes, you can do this.
A cross. Means no, you can't do this.
A cross. Means no, you can't do this.

Flat

Sloping

Hip

Curved

Roof forms

A tick mark. Means yes, you can do this.
A tick mark. Means yes, you can do this.
A cross. Means no, you can't do this.
A cross. Means no, you can't do this.