Planning Permission Records: What UK Homeowners Must Keep

Planning permission documents are among the most consequential records a UK homeowner can possess — or fail to possess. When work has been carried out under planning permission, or when a property benefits from a permitted development right that has been formally confirmed, the documentation matters enormously. Buyers, lenders, and their solicitors will scrutinise planning history, and gaps in the record can cause delays, reduce value, or in the worst cases, require remediation of unauthorised works.

What Planning Records Should Be Retained

Any property at which planning permission has been granted and work has been carried out should retain the original planning permission notice — the formal decision notice from the local planning authority. This document specifies the development that was approved, the conditions attached to the approval, and the expiry date of the permission. If work was carried out subject to planning conditions — for example, that external materials must match the existing building — records of how those conditions were discharged should also be retained.

Where a Certificate of Lawfulness has been obtained — either for existing use or for a proposed development — this should be retained. A Certificate of Lawfulness provides legal certainty that a particular use or development is lawful, which is significant both for future planning applications and for property transactions.

Pre-application correspondence with the local planning authority should also be retained where it is relevant to the history of a development or confirms the planning authority's position on a particular matter.

Permitted Development Records

Many common works — loft conversions, extensions within prescribed limits, outbuildings, garage conversions — are permitted development and do not require a planning application. However, permitted development rights can be removed by planning conditions, Article 4 Directions, or the nature of the property itself (listed buildings have no permitted development rights). Where works are carried out under permitted development, retaining evidence that the works fell within permitted development limits is advisable.

For works where there is any ambiguity about whether permitted development rights apply, a Lawful Development Certificate can be obtained from the local planning authority. This provides formal confirmation that the works are lawful and is valuable evidence in any future transaction or dispute.

Building Regulations Records

Planning permission and Building Regulations approval are separate processes. A development may require one, both, or neither. Where Building Regulations approval was required for works — extensions, structural alterations, change of use — the building control completion certificate must be retained alongside the planning permission documentation.

Failing to retain either set of documents can create problems independently. A buyer's solicitor will typically check for both, and the absence of either will be raised as a requisition in the conveyancing process.

How Long Must Planning Records Be Kept?

Planning records should be retained for the lifetime of the property and transferred to buyers on sale. There is no statutory minimum retention period for homeowners, but the practical reality is that planning history questions arise in every property transaction — potentially decades after the works were carried out. Documents stored securely in digital and physical formats from the time of the work are far more reliably available than documents sought retrospectively.

Key Takeaways

• Planning permission decision notices must be retained, including all attached conditions and any records of conditions being discharged.
• Certificates of Lawfulness provide legal certainty about permitted use or development and are particularly valuable documents to retain.
• Permitted development works should be documented with evidence that they fell within applicable limits.
• Building Regulations completion certificates must be retained separately alongside planning documents.
• All planning records should be retained for the lifetime of the property and transferred to new owners on sale.
• Gaps in planning history create problems in property transactions and may require indemnity insurance or retrospective applications.