What Open Property Data Association does

Open Property Data Association (OPDA) is the UK's independent, not-for-profit industry body founded in June 2023 to develop open data standards and a trust framework for the UK property transaction market. Its core technical offering is the Property Data Trust Framework (PDTF): an open, RESTful OpenAPI-specified schema (currently v3.5, September 2025) with JSON-based claims, OpenID Connect for verified identity, and immutable provenance attached to every data point. PDTF v3.5 added Milestones (transaction progress tracking) and standardised Surveys & Valuations data to extend the framework into mortgage underwriting. The Smart Property Data Trust Framework Sandbox, built with the Council for Licensed Conveyancers and powered by Raidiam's Open Banking-style infrastructure, provides a live test environment for consent-driven property data exchange; it is funded by a £742,700 grant from DSIT's Regulators' Pioneer Fund (November 2024).

OPDA is funded entirely through annual membership fees, tiered by organisation size: £3,000 (startups/micro), £6,000 (SMEs) and £10,000 (enterprise). All members receive equivalent access to working groups (R&D, Accreditation, PR), standards influence and collaborative opportunities; an OPDA Accreditation Scheme provides a self-certification trust signal. Members span proptechs (Moverly, Sprift, Kotini, Coadjute), portals (OnTheMarket), mortgage lenders (Atom Bank, United Trust Bank), conveyancing and search firms (PEXA, LMS, TM Group, Inventory Base), data providers (Groundsure), and surveyors — totalling roughly 40 organisations plus HM Land Registry and several government departments.

OPDA holds formal positions on the Digital Property Market Steering Group (co-chaired with MHCLG), the Smart Data Council and the Home Buying Selling Council, and its consumer research (Future of Homebuying 2026, n=5,001) underpins government quantification of the £14.1bn UK smart data opportunity and the June 2026 Home Buying and Selling Reform roadmap. The Chair & Founder is Maria Harris; the executive committee comprises directors and working-group chairs drawn largely from member firms.

Name

Open Property Data Association

Legal name

Open Property Data Association

Website

https://openpropdata.org.uk

Company type

Private

Founded year

2023

Operating status

Operating

Headcount range

1–10 employees

Short description

Open Property Data Association is a UK not-for-profit trade body, founded in 2023, that develops open data standards and the Smart Property Data Trust Framework for the property transaction ecosystem, serving proptechs, lenders, conveyancers, surveyors and government.

Ownership category

akta.pro rank

Product category

Property Data Standards & Trust Framework

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182)

SIC

Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

Data Sharing, Data Exchange & Data Marketplace Platforms (HDAEABAH)

akta.pro secondary industries

Data Sharing & Data Marketplace Governance (HDAEADAK), Data Access Governance & Entitlement Management (DSPM / CIEM-for-Data) (HDADAFAG)

Keywords

• Open property data
• Property data standards
• Trust framework
• Smart property data
• Property transaction data

Headquarters

HQ city

Stanley

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Membership Fees: OPDA generates revenue entirely from annual membership fees paid by organisations across the property transaction ecosystem. Membership fees are tiered by organisation size and turnover. All members receive the same access, decision-making influence, and collaborative opportunities regardless of tier. Fees are paid annually in advance and reviewed annually by the Executive Committee.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels8 records

Core offering

OPDA is the UK's independent, not-for-profit industry body that develops and governs open data standards and the Smart Property Data Trust Framework for the property transaction ecosystem. Its core offerings include the Property Data Trust Framework (PDTF) schema and OpenAPI-based RESTful API for verified, provenance-attributed property data exchange, the Smart Property Data Trust Framework Sandbox (powered by Raidiam) for live testing of consent-driven data sharing, and tiered membership for organisations across the property chain.

Product overview

OPDA is the UK's independent, not-for-profit industry body developing open data standards and trust frameworks for the property market. The core offering centers on the Property Data Trust Framework (PDTF) - an open data toolkit comprising the PDTF API (specification via OpenAPI with REST architecture), the open property data schema, and the Smart Property Data Trust Framework Sandbox (powered by Raidiam). These work together to enable secure, consent-driven, standardized property data sharing across the transaction ecosystem. OPDA also publishes consumer research (The Future of Homebuying reports) and provides membership programs with tiered pricing and an accreditation pathway.

Differentiator

Problem solved

Functional benefit

Brands

• Smart Property Data Trust Framework: The industry trust framework for secure, consent-based sharing of property data, providing governance, security, accreditation and interoperability standards for the property market.
• The Future of Homebuying

Products and services

• Property Data Trust Framework (PDTF) API
• Smart Property Data Trust Framework Sandbox
• OPDA Membership
• The Future of Homebuying 2026 Report
• OPDA Accreditation Scheme

Quantifiable outcome

• 43% reduction in fall-throughs and zero fraud incidents in pilot programmes
• +8 more outcomes

Named customers13 records

Segments7 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature6 records

Partnerships

26 partnerships are on record, tiered core and minor.

• Council for Licensed Conveyancers (CLC)coreStrategic or Co-development Partner · 19 November 2024CLC, the specialist property law regulator, is co-lead partner with OPDA in delivering the Smart Property Data Trust Framework sandbox. CLC is committed to the responsible, ethical use of technology and innovation for consumers and conveyancers. It manages the sandbox project and works with OPDA and Raidiam to establish the principles of trust frameworks for property data.
• RaidiamcoreTechnology or Integration · 19 November 2024Raidiam (founding pioneers of UK Open Banking) provides the sandbox infrastructure for the Smart Property Data Trust Framework. The sandbox tests how Open Banking-style trust models translate to property and homebuying transactions, providing the technical infrastructure needed to underpin the regulatory, security, and governance standards.
• HM Land RegistrycoreStrategic or Co-development Partner · 19 November 2024HM Land Registry provides authoritative property data to the sandbox and is actively digitising millions of land charges. It is a member of the Digital Property Market Steering Group and leads government pilots to open up more local authority data in digital format. OPDA works with HMLR to ensure data from authenticated, digitally verified sources underpins the trust framework.
• Council of Property Search Organisations (CoPSO)minorStrategic or Co-development Partner · 30 October 2024OPDA and CoPSO signed a Memorandum of Understanding (MoU) to work together to promote open property data and improve the homebuying and selling process. The MoU recognises an overlap in both organisations' membership and objectives in standardising property search data.
• MoverlycoreOthers · 1 June 2023Founding member of OPDA, accredited firm, and contributor to schema development. Moverly uses Digital Sale Ready approach creating intelligent, connected property data flowing through the transaction ecosystem. Co-Founder Ed Molyneux serves on OPDA's executive committee.
• OnTheMarketcoreOthers · 1 June 2023Founding member of OPDA. Leading UK property portal connecting home seekers with estate and letting agents, committed to open data standards and digital property packs.
• SpriftcoreOthers · 1 June 2023Founding member of OPDA and technically certified. Property data platform sourcing data from over 100 individual data points per property via 1bn+ public and private records. CEO Matt Gilpin is an active OPDA member.
• CoadjutecoreOthers · 1 June 2023Founding member of OPDA. Property transaction network connecting buyers, sellers, agents, conveyancers, and lenders in a single digital environment to streamline the home buying process.
• One Mortgage System (OMS)coreOthers · 1 June 2023Founding member of OPDA. CEO Dale Jannels serves as OPDA Company Director. Provides mortgage sourcing and advisory services.
• Inventory BasecoreOthers · 1 June 2023Founding member of OPDA and technically certified. Operations Director Sian Hemming-Metcalfe serves as OPDA's Accreditation Working Group Chair.
• United Trust BankcoreOthers · 1 June 2023Founding member of OPDA and technically certified. Managing Director Buster Tolfree serves on OPDA's executive committee, representing the BTL and bridging lending perspective.
• TM Group (TMG)coreOthers · 1 June 2023Founding member of OPDA. Provides technology solutions for the property transaction industry including search and enquiry management.
• PEXAcoreOthers · 1 June 2023Founding member of OPDA and technically certified. Digital property exchange platform connecting lenders and conveyancers for secure, simultaneous settlements. Head of Market Development UK Angela Hesketh serves as OPDA's PR Working Group Chair.
• LMScoreOthers · 1 June 2023Founding member of OPDA and technically certified. Provides conveyancing workflow and mortgage services. CEO Nick Chadbourne serves on OPDA's executive committee.
• KotinicoreOthers · 1 June 2023Founding member of OPDA and technically certified. Proptech platform for estate agent onboarding with ID/AML checks and material information collection. Founder & CEO Kieran Witt serves as OPDA's R&D Working Group Chair.
• GroundsurecoreOthers · 1 June 2023Founding member of OPDA and technically certified. Environmental and planning data provider for property transactions. Customer Engagement Director Cat Shiers serves on OPDA's executive committee.
• HomelyminorOthers · 1 June 2023Founding member of OPDA. First fully digital, end-to-end journey to homeownership for first-time buyers, combining AI-powered tools, financial education, and community support.
• Atom BankminorOthers · 1 June 2023Founding member of OPDA. Digital mortgage lender providing residential and BTL mortgages. CCO Chris Storey serves on OPDA's executive committee.
• Digital Property Market Steering Group (DPMSG)coreStrategic or Co-development PartnerOPDA actively convenes collaboration and engagement with its members through DPMSG. OPDA leads workstreams on trust and interoperability standards within this cross-industry body, which also includes DSIT, DBT, FCA, Which?, and Open Banking. The group is co-chaired by OPDA's Maria Harris and MHCLG's Tom Treadwell.
• Smart Data CouncilcoreStrategic or Co-development PartnerOPDA sits on the Smart Data Council, a cross-government body overseeing smart data scheme development across sectors. The council prioritised property as the first smart data use case, building on OPDA's work on open data standards and the Property Data Trust Framework.
• Home Buying Selling CouncilcoreStrategic or Co-development PartnerOPDA sits on the Home Buying Selling Council, working to deliver and promote the Smart Property Data Trust Framework and drive digitisation of the home buying and selling process in the UK.
• Ministry of Housing, Communities and Local Government (MHCLG)coreStrategic or Co-development PartnerMHCLG is the government department leading on home buying and selling reform. It has formally committed to digitising the homebuying process and co-chairs the Digital Property Market Steering Group with OPDA. It published the Home Buying and Selling Reform roadmap in June 2026 and chairs the sandbox steering group.
• Department for Business & Trade (DBT)coreStrategic or Co-development PartnerDBT commissioned independent research identifying property as the number one smart data use case with £14.1bn net social value. It leads on the Industrial Strategy and smart data economy, and funds the Smart Data Council of which OPDA is a member.
• Financial Conduct Authority (FCA)minorStrategic or Co-development PartnerThe FCA is a member of the Digital Property Market Steering Group and provides regulatory oversight as OPDA develops trust framework standards for property data sharing and digital identity verification in the mortgage sector.
• Which?minorStrategic or Co-development PartnerWhich? is a member of the Digital Property Market Steering Group, representing consumer interests in the development of smart property data standards and ensuring consumer protection is embedded in the trust framework design.
• Open BankingminorStrategic or Co-development PartnerOpen Banking Limited is a member of the Digital Property Market Steering Group. OPDA draws on the Open Banking model as the blueprint for trust framework and consent-driven data sharing in the property sector. Marion King, Chair of Open Banking Limited, has publicly endorsed OPDA's approach.

Scale indicators10 records

Recent moves6 records

Expansion highlights4 records

Emerging players

• Geovation: HM Land Registry-backed property and geospatial technology accelerator. Directly adjacent proptech community with overlapping property-data focus and listed as an OPDA partner organisation.
• Digital Catapult: UK government-backed advanced digital technology innovation centre. Comparable as a public-interest tech intermediary that runs sandboxes, accelerator programmes, and open data initiatives analogous to OPDA's trust framework and sandbox approach.
• Centre for Finance, Innovation and Technology (CFIT): Industry-led body convened to drive innovation across UK financial services. A structural peer as a similar standards/coordination body working with government on data and fintech adoption, listed as an OPDA partner.

Broad incumbents

• Propertymark: UK membership body for estate and letting agents, valuers, and property professionals. Comparable as an established property-sector trade association with accreditation schemes that share conceptual overlap with OPDA's accreditation programme.
• UK Finance: Major UK financial services trade association. A broader industry body with representation on government working groups analogous to OPDA's policy engagement, but focused on the full financial services sector rather than property data specifically.
• Conveyancing Association: Established UK industry body representing conveyancing firms. Shares the property transaction ecosystem remit with OPDA, working with government on reform but focused on a narrower conveyancer constituency.
• RICS (Royal Institution of Chartered Surveyors): Global professional body for chartered surveyors and property professionals. Operates adjacent to OPDA's surveyor/valuer membership segment and is referenced on OPDA's partner page as a standards collaborator.

Direct peers

• Open Banking Limited: The UK's Open Banking Implementation Entity, which developed the original trust framework, API standards, and consent-driven data sharing model that OPDA explicitly mirrors for property data. Closest structural and architectural parallel in the UK standards ecosystem.
• Council of Property Search Organisations (CoPSO): UK property search industry body that signed an MoU with OPDA in October 2024 to coordinate on property search data standards. A directly comparable sector trade association with overlapping membership.

Others

• Tech Nation (now Founders Forum Group): UK-wide tech industry network and policy voice. Comparable as a sector membership organisation with government engagement, ecosystem-building programmes, and thought-leadership positioning similar to OPDA's role in property.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• GitHubgithub.com/Property-Data-Trust-Framework/schemas
• YouTubeyoutube.com/@OpenPropData
• LinkedInlinkedin.com/company/open-property-data-association

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles16 records

Funding overview

Funding rounds

Investors

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M&A

Investments

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Frequently asked questions about Open Property Data Association