New disclosure rules for development land agreements: what the 2027 regulations mean for property professionals
A new era of land market transparency
For decades, the development land market in England and Wales has operated with limited visibility into who actually controls sites earmarked for housing and commercial development. Option agreements, promotion agreements, and conditional contracts have allowed developers and land promoters to secure interests in land without those arrangements appearing on the Land Registry title.
The Levelling-up and Regeneration Act 2023 set the legislative foundation for changing this, and draft regulations now under consultation will bring those ambitions into force. From 2027, parties holding contractual interests in development land will be required to disclose these arrangements to a new public register, fundamentally reshaping how land transactions are conducted and how market intelligence is gathered.
What the regulations will require
Scope of disclosure
The draft regulations propose mandatory disclosure of several categories of land control agreements that have traditionally remained confidential between contracting parties:
• Option agreements – contracts giving a developer the right, but not the obligation, to purchase land at a future date, typically triggered by planning permission being granted
• Promotion agreements – arrangements where a promoter works to secure planning consent in exchange for a share of the uplift in land value
• Conditional contracts – purchase agreements contingent on specific events, such as planning approval or infrastructure delivery
• Overage and clawback clauses – provisions entitling sellers to additional payments if certain value thresholds are exceeded after sale
Under the proposals, disclosure would be required within a set period of entering into such agreements, with the information held on a searchable public register maintained by HM Land Registry.
Geographic and temporal scope
The regulations will apply to land in England and Wales, with Scotland and Northern Ireland operating under separate land registration systems and not immediately affected by these provisions. Existing agreements entered into before the commencement date may also fall within scope, though transitional arrangements are still being finalised.
The 2027 enforcement date allows stakeholders time to review existing portfolios, assess contractual confidentiality provisions, and adjust deal structures where necessary.
Why this matters for the development sector
Implications for site assembly and land values
REalyse data shows that planning permissions and development pipeline activity are concentrated in areas where land control arrangements have historically been most opaque. Large-scale housing sites often involve multiple parties with layered interests—original landowners, option holders, promotion companies, and ultimate developers—creating complexity that has been difficult to map.
Greater transparency could affect land pricing dynamics. Where option premiums and promotion fees have been negotiated in private, disclosure may lead to more standardised terms as market comparables become visible. Landowners may become more sophisticated in negotiations when they can see what terms are being offered on similar sites nearby.
For investors and lenders, the ability to identify who controls development sites—and on what terms—will improve due diligence processes and risk assessment for development finance.
Impact on confidentiality and competitive advantage
Many developers have relied on confidential land control positions as a source of competitive advantage, building pipelines of sites without alerting competitors to their strategic intentions. The new disclosure requirements will diminish this information asymmetry.
Legal advisors are already considering how disclosure obligations might interact with existing confidentiality clauses in option and promotion agreements. Some contracts may require renegotiation, while new deals will need to be drafted with public disclosure in mind.
Preparing for 2027: practical steps for stakeholders
Property professionals should begin preparing now for the regulatory changes ahead:
Audit existing agreements – Developers and land promoters should review their portfolios to understand which arrangements will fall within scope and what information will require disclosure.
Review contractual terms – Consider whether existing confidentiality provisions conflict with upcoming disclosure obligations, and assess renegotiation requirements.
Enhance data capabilities – As land market transparency increases, those with sophisticated data analysis tools will be best positioned to extract value from newly available information. Platforms like REalyse that aggregate planning, transaction, and market data can help stakeholders identify opportunities and benchmark terms against disclosed comparables.
Monitor consultation outcomes – The draft regulations remain subject to consultation and parliamentary scrutiny. Final requirements may differ from current proposals, and implementation timelines could shift.
Outlook
The move toward greater transparency in land control agreements represents one of the most significant changes to the development land market in a generation. While some stakeholders may view disclosure requirements as an administrative burden or competitive threat, the broader effect should be a more efficient market where information flows more freely.
For those who embrace data-driven decision-making, the new regime offers opportunities to gain insights that were previously impossible to obtain. Understanding who controls development land, on what terms, and how those terms compare to market norms will become essential competencies for investors, developers, and advisors alike.
As 2027 approaches, property professionals would be wise to treat these regulations not as a compliance exercise but as a catalyst for more informed, transparent, and ultimately more effective participation in the UK's development land market.










