This guide is maintained as a current resource for September 2026 and covers only the laws of England and Wales. Information is for general guidance, not legal advice. Consult a qualified solicitor for advice specific to your situation.
Learn how to check building regulation compliance before selling property in England and Wales. This detailed guide explains what certificates and documentation are required, how conveyancers verify compliance, what to do if records are missing, and practical steps for sellers and buyers to ensure a smoother conveyancing process.
Before selling a property in England or Wales, it is important to confirm that any work carried out complies with building regulations and that appropriate documentation exists. Building regulations are legal standards governing the design and construction of buildings and certain alterations to ensure safety, health, accessibility and energy efficiency. Failure to confirm compliance can delay completion, affect your ability to obtain a mortgage for buyers, lead to indemnity insurance requirements, and, in rare cases, expose sellers or buyers to enforcement action. This guide explains what building regulation compliance means, how it is checked before a sale, what documentation is relevant, and the practical steps you can take as a seller or buyer.
What Are Building Regulations and Why They Matter
Building regulations are a statutory framework that applies to most structural work and alterations to a property. They cover aspects such as foundation stability, structural integrity, fire safety, drainage, electrical installations, insulation and ventilation. Work to a property that involves structural change, extension, installation or alteration of services generally requires approval from building control either through a local authority or an approved inspector. When that work is completed and found compliant, a building regulations completion certificate is issued. These certificates form important evidence of legal compliance, and they are frequently requested by buyers, lenders and solicitors in the conveyancing process.
In conveyancing, the rule of “buyer beware” applies. Buyers and their conveyancers will make enquiries about building work and compliance, and the seller is expected to supply relevant certificates and documentation. Failure to provide these can have practical and legal implications for the sale.
How Compliance Is Checked During Conveyancing
Seek and Provide Building Regulation Certificates
As part of the conveyancing process:
- Sellers should gather all completion certificates and approvals from past building control applications.
- Conveyancers will review these certificates against the Property Information Form (TA6), where the seller must disclose details of any building work and consents.
- Conveyancing searches, particularly the local authority search, routinely include checks for building regulation approvals recorded with the local council. These can reveal completed and registered building control applications relevant to the property.
If the seller cannot locate a certificate, they should contact the local authority building control department or the approved inspector who handled the work; copies may still be obtainable even if the original owner has lost theirs.
Understand Which Works Need Approval
Not all works require building regulation approval. Routine maintenance or purely cosmetic changes may not trigger building control requirements. However, structural modifications, extensions, new or altered electrical and plumbing systems, or the installation of replacement windows or doors usually do. For example, replacement windows and doors installed since April 2002 often require confirmation under FENSA or similar competent persons schemes, and certificates from these schemes are commonly requested during conveyancing.
A conveyancer or surveyor can help identify which works require documented compliance and flag any potential omissions before contracts are exchanged.
Check Local Authority and Approved Inspector Records
Conveyancers typically request building control searches from the local authority to confirm what is recorded against the property. Records held by councils include building control applications and any completion certificates issued. Not all records may be fully digitised, and in some cases solicitors might need to contact the authority directly to confirm the existence of certificates.
If the work was carried out under a competent person scheme, the applicable certificate (for example, FENSA for windows) may be held by the scheme provider rather than the council. Sellers should obtain and supply these as part of the conveyancing pack.
What To Do If Documentation Is Missing
Apply for Retrospective Building Control Approval
If no building regulation certificate exists for work that should have been approved, you can apply to your local authority for regularisation. This involves submitting an application after the work is completed. An inspector will check the work; if compliant, a regularisation certificate is issued. This process may require invasive inspection and possible remedial work before certification is granted, and it may take several weeks to complete.
Consider Indemnity Insurance
Where obtaining a retrospective certificate is impractical or delayed, the alternative often used in conveyancing is indemnity insurance. An indemnity policy provides financial protection to the buyer (and often the lender) against losses that could arise if enforcement action is taken due to the absence of documented approval. These policies do not prove that the work complies with regulations, but they can allow a sale to proceed. Indemnity policies are typically arranged through the seller's or buyer's conveyancer as part of the transaction.
It is important to understand that indemnity insurance may be invalid if the local authority is notified of non-compliance before the policy is in place. Sellers should not contact building control directly about missing certificates without advising their conveyancer.
Negotiate with the Buyer
If compliance documentation is incomplete or absent, negotiations may involve:
- Arranging for retrospective approval before completion.
- Offering indemnity insurance.
- Agreeing on a price adjustment to reflect the risk and cost of remedial work.
- Disclosing issues transparently in the property information form to avoid future legal claims or compensation actions.
Transparent disclosure reduces the risk that a buyer could later claim damages for misrepresentation if the lack of compliance was not properly disclosed.
Practical Steps for Sellers
- Review building work history: List all work done on the property that might require building control approval.
- Gather documentation: Locate original completion certificates, building control correspondence, competency scheme certificates (e.g., FENSA) and plans.
- Request copies from authorities: Contact the local authority or approved inspectors for duplicates of certificates if originals are lost.
- Discuss options with your conveyancer: Determine whether regularisation or indemnity insurance is appropriate based on timescales and the buyer's position.
- Be transparent in disclosures: Provide complete and accurate information about compliance or lack thereof in the property information forms.
Anticipating and resolving compliance questions early in the process helps prevent delays at the critical stages of exchange and completion.
Practical Steps for Buyers
- Ask your solicitors to check certificates early: Resolve building control documentation issues before exchange of contracts.
- Commission a property survey: Professional surveys can highlight undisclosed building work or potential regulation issues.
- Seek advice on missing certificates: Understand implications of missing documentation on mortgage offers, valuation and future resale.
- Consider protective arrangements: Where certificates are missing and regularisation is not feasible, indemnity insurance and price adjustments may be considered.
Common Issues and Risks
- Delay to sale: Absence of documentation may delay exchange or completion while certificates are obtained or insurance is arranged.
- Mortgage restrictions: Many lenders insist on evidence of compliance or indemnity insurance before advancing funds.
- Future enforcement: While enforcement is less common after several years, local authorities retain powers to act where work is non‑compliant.
- Legal claims for misrepresentation: If a seller knowingly withholds relevant information, the buyer may have grounds for a compensation claim after completion.
Key Takeaways
Checking building regulation compliance before selling a property in England and Wales is a key part of the conveyancing process. Sellers should identify any regulated work, gather completion certificates or seek copies from building control or competent persons schemes, and work with their conveyancer to resolve any gaps. Where documentation is missing, options include retrospective regularisation or indemnity insurance. Transparency and early action help to avoid delays, satisfy lender requirements, and reduce legal risks for both sellers and buyers.
