WikiHouse Foundation

What WikiHouse Foundation does

WikiHouse Foundation, legally Open Systems Lab, is a UK-registered non-profit that stewards an open-source modular building system. The current product, WikiHouse Skylark BETA launched in Spring 2022, consists of interlocking CNC-machined plywood or OSB cassettes (blocks) that are digitally fabricated to 0.1mm precision, joined with integral bow-tie timber connectors, and can be rapidly assembled on site by teams without conventional construction skills. The system is designed to be carbon-negative, with blocks storing more atmospheric carbon than is emitted in their production, and is intended to be re-used or recycled at end of life.

The organisation does not sell the system itself; design files, cutting files, 3D models, materials lists and assembly manuals are distributed free of charge under an open-source licence, and physical blocks are produced by a global network of approved WikiHouse Manufacturers and Installers using standard CNC machines. Revenue is generated through three professional services lines offered directly by the WikiHouse team: chassis design and check (£1,200-£5,000+VAT per project), custom block design (£100-£350+VAT per block), and production and procurement guidance (£350-£450+VAT per day). The customer base spans self-builders and homeowners, architects, designers and structural engineers, SMEs adopting modern methods of construction, and educational institutions.

WikiHouse is supported by a broad collaborator network including the National Lottery Community Fund, Innovate UK, Nesta, the Joseph Rowntree Foundation, Power to Change, Architecture 00, Arup, HawkinsBrown, BRE, and several UK universities. The Foundation was established in 2014 as a non-profit successor to the 2011 WikiHouse project started at Architecture 00 by Alastair Parvin and Nick Ierodiaconou, and has been used to deliver hundreds of small buildings worldwide, with the largest single deployment being the 27-home De Stripmaker development in the Netherlands.

Name

WikiHouse Foundation

Legal name

Open Systems Lab

Website

https://wikihouse.cc

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

1–10 employees

Short description

WikiHouse Foundation (Open Systems Lab) is a UK non-profit stewarding an open-source, CNC-fabricated modular timber building system, offering free design files, a distributed manufacturer network, and paid design and consulting services to self-builders, architects, SMEs, and housing providers.

Ownership category

akta.pro rank

Product category

Modular Construction Systems

NAICS

Prefabricated Wood Building Manufacturing (321992), Engineered Wood Member Manufacturing (321215)

SIC

Prefabricated Wood Bldgs & Components (2452), Millwood, Veneer, Plywood, & Structural Wood Members (2430)

akta.pro primary industry

Prefabricated Engineered Wood Building Components (Trusses, SIPs, EWP Kits) (IMAMACAJ)

akta.pro secondary industry

Engineered Wood Panels (Plywood, OSB, LVL) (IMADADAB)

Keywords

• Modular building systems
• Open source construction
• CNC fabricated structures
• Sustainable building design
• Timber frame construction

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Design Services: Chassis design and check services where the team develops precise 3D models, materials lists, cutting files and assembly manuals for WikiHouse structures, working with customer design teams to pre-check designs for structural engineer approval.
2. Custom Block Design Services: Development of non-standard, bespoke blocks when projects require new block designs not available in the standard library.
3. Production and Procurement Guidance: Expert consulting services to help teams set up local supply chains, develop modular replicable products, and adopt off-site fabrication and modern methods of construction.

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels7 records

Core offering

WikiHouse provides an open-source modular timber building system in which interlocking plywood or OSB cassettes (blocks) are digitally fabricated to 0.1mm precision on standard CNC machines and rapidly assembled on-site without conventional construction skills. In addition to the free open-source design files and block library, the foundation sells professional design, custom block development, and production/procurement guidance services to project teams, architects, engineers, and small manufacturers.

Differentiator

Problem solved

Functional benefit

Products and services

• WikiHouse Skylark System Open-source modular timber building system of CNC-fabricated interlocking plywood/OSB cassettes (Skylark200 and Skylark250 series) that are downloaded for free, manufactured locally with standard CNC machines, and rapidly assembled on-site. Used by self-builders, architects, engineers, and small manufacturers worldwide for homes, extensions, garden studios, schools, and community structures.
• Chassis Design and Check Service Service where the WikiHouse team develops precise 3D models, materials lists, cutting files, and assembly manuals for WikiHouse chassis structures, working with customer design teams to pre-check designs for structural engineer approval. Priced at £1,200–£5,000+VAT per project.
• Custom Block Design Service Development of non-standard, bespoke WikiHouse blocks when a project requires new block designs not available in the standard library. Priced at £100–£350+VAT per custom block.
• Production and Procurement Guidance Service Expert consulting to help teams set up local supply chains, develop modular replicable products, and adopt off-site fabrication and modern methods of construction. Priced at £350–£450+VAT per day.

Quantifiable outcome

• WikiHouse had less than half the life cycle CO2eq emissions of a conventional brick and block cavity wall house over a 100-year assessment period
• +4 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

18 partnerships are on record, tiered core and minor.

• NestacoreStrategic or Co-development PartnerUK innovation foundation focused on accelerating ideas that help people and communities. Supporting WikiHouse development as part of their mission to transform construction.
• Architecture 00coreStrategic or Co-development PartnerOriginal founding team that started WikiHouse in 2011. Led by Alastair Parvin and Nick Ierodiaconou, they created the initial WikiHouse concept and have continued as key partners.
• Momentum EngineeringcoreTechnology or IntegrationEngineering firm that collaborated with Architecture 00 on the original WikiHouse development, contributing technical expertise to the system's structural design.
• ArupcoreStrategic or Co-development PartnerGlobal engineering consultancy providing technical expertise and structural engineering guidance for the WikiHouse system development.
• HawkinsBrowncoreStrategic or Co-development PartnerArchitecture practice providing design and technical expertise as collaborators on WikiHouse development.
• University of EdinburghcoreStrategic or Co-development PartnerAcademic partner conducting structural testing and research on WikiHouse Skylark components including floor beams, wall systems, and connection testing.
• Imperial College LondoncoreStrategic or Co-development PartnerAcademic partner involved in experimental testing of OSB Skylark floor beams and structural analysis research.
• Leeds Beckett UniversitycoreStrategic or Co-development PartnerAcademic partner that conducted thermal performance modelling and life cycle assessment research for WikiHouse.
• British Research Establishment (BRE)coreStrategic or Co-development PartnerLeading building science research organization that conducted structural testing of WikiHouse component panels and full module testing at their Watford facility.
• SpaceCraft SystemscoreChannel Partner/ Reseller/ DistributorNew Zealand-based manufacturing partner producing and distributing WikiHouse blocks using CNC fabrication technology.
• Forestry CommissionminorStrategic or Co-development PartnerUK government body responsible for protecting and expanding England's forests, relevant to WikiHouse's timber sourcing and sustainable forestry practices.
• Timber Development UK (TDUK)minorStrategic or Co-development PartnerIndustry organization supporting timber usage in construction, aligned with WikiHouse's use of engineered timber products.
• Plymouth UniversityminorStrategic or Co-development PartnerAcademic institution collaborating on WikiHouse research and educational projects.
• WoningBouwAtelierminorChannel Partner/ Reseller/ DistributorNetherlands-based WikiHouse partner involved in manufacturing and building projects.
• SYHA (South Yorkshire Housing Association)minorChannel Partner/ Reseller/ DistributorUK housing association exploring or implementing WikiHouse in their housing projects.
• ThreeCreateminorStrategic or Co-development PartnerCreative studio partner involved in WikiHouse design and development collaboration.
• AWA EngineersminorImplementation/ SI/ Consulting PartnerEngineering consultancy providing structural engineering services for WikiHouse projects.
• BEST (Built Environment + Sustainability Training)minorStrategic or Co-development PartnerTraining organization focused on sustainable building practices, potentially supporting WikiHouse education and skills development.

Scale indicators4 records

Recent moves7 records

Expansion highlights6 records

Others

• Arup: Arup is a global engineering consultancy that has partnered with WikiHouse on structural development. As an ecosystem participant, Arup's broader modular and sustainable construction advisory practice overlaps thematically with WikiHouse's mission and could either accelerate or compete with its commercial ambitions.

Direct peers

• TopHat: TopHat is a UK modular housing manufacturer using factory precision-engineered timber frames and closed-panel systems to build homes rapidly. It directly competes with WikiHouse in the UK modular timber housing market, though it operates a centralized factory model with proprietary systems rather than distributed micro-factories.
• Ilke Homes: Ilke Homes is a UK modular housing manufacturer producing factory-built homes using timber-frame closed panels. It competes in the same UK factory-built timber housing space as WikiHouse but operates a large centralized factory model backed by significant institutional capital.
• Gablok: Gablok is a Belgium-based company offering insulated timber block construction kits that stack together without mortar or glue. Highly comparable to WikiHouse in its use of prefabricated wooden blocks for rapid self-build construction, though Gablok sells a proprietary kit product while WikiHouse is open source.
• Factory_OS: Factory_OS is a US modular construction startup using advanced manufacturing to build multifamily housing faster and more affordably. Comparable to WikiHouse in mission (industrializing housing construction to reduce cost/time) but uses a capital-intensive centralized factory model with proprietary systems.
• Plant Prefab: Plant Prefab is a US sustainable prefabricated home builder using factory-built panelized and modular systems with a focus on custom designs and reduced construction waste. Comparable to WikiHouse in its factory-precision, sustainability-driven prefab approach, though it operates proprietary systems at scale rather than open source.
• Brikawood: Brikawood is a French company producing interlocking timber block building kits made from CNC-cut wood boards that assemble without nails or screws. It is the closest direct peer to WikiHouse, sharing the same core proposition of stackable wooden cassettes for self-builders, but operates as a commercial product rather than open source.

Regional players

• Rollalong: Rollalong is a UK-based modular building manufacturer producing off-site volumetric homes for residential and defense clients. It is a regional peer in the UK modular housing market, competing for similar housing-association and self-build customers though with traditional volumetric modular methods.

Emerging players

• Mighty Buildings: Mighty Buildings uses 3D printing and prefab to produce sustainable homes with reduced waste and shorter build times. Comparable to WikiHouse in sustainability-driven prefab ethos but applies a different core technology (3D printing with composite materials) rather than CNC-machined timber cassettes.

Broad incumbents

• Katerra: Katerra was a well-funded US prefab construction company using industrialized factory methods to deliver buildings end-to-end. Although it ceased operations, it represents the type of capital-intensive incumbent model that competes with WikiHouse's distributed micro-factory approach; its failure illustrates execution risk in scaled modular construction.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/WikiHouse
• GitHubgithub.com/wikihouseproject/Skylark
• YouTubeyoutube.com/channel/UCdaCCzZijlUBU6ntv_Xrd8w
• Facebookfacebook.com/wikihouse
• LinkedInlinkedin.com/company/3476589

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about WikiHouse Foundation