Signed, Then Softened: The Planning Promises Rewritten After the Public Has Gone Home

When a council grants planning permission, the decision is usually visible. The committee report is published, the application drawings are online, and the Section 106 agreement is meant to record the promises that make the scheme acceptable: affordable homes, highway works, school contributions, open space or maintenance payments.

The less visible document is the one that comes afterwards. A deed of variation can amend a Section 106 agreement after permission has been granted. It can change the tenure of affordable housing, adjust the number of units, delay infrastructure, substitute a cash payment for a piece of land, or reset a review mechanism. These are legal instruments, not planning applications. They do not necessarily appear on a council's planning register, and they rarely attract the same public attention as the original decision.

The Ferret has been examining how councils record and disclose these later deeds. We asked a sample of local authorities for variation deeds executed in recent years, together with the officer reports, delegated decision records and committee papers that authorised them. The responses point to a patchwork system: some councils can produce the documents quickly, others hold them only in legal files, and several disclose the deed while withholding the reasoning behind it.

The promise on the planning file

Section 106 of the Town and Country Planning Act 1990 allows local planning authorities to secure obligations from developers. The obligations must be necessary to make the development acceptable in planning terms, directly related to the development, and fairly and reasonably related in scale and kind. In practice, they are the mechanism through which many councils secure affordable housing and the infrastructure that a new development requires.

The 1990 Act also provides for obligations to be modified or discharged, including by agreement. A deed of variation is one route. It is not inherently improper. Planning circumstances change, funding arrangements shift, and a rigid agreement can become unworkable. Councils need lawful ways to correct errors, respond to revised schemes or renegotiate contributions when a development is delayed.

The question is not whether variations happen. It is whether they are recorded, reasoned and disclosed in a way that allows residents, councillors and auditors to test whether the public benefit secured at permission stage has been preserved.

What our requests found

Our Freedom of Information requests asked councils for variation deeds, the decision record authorising each deed, and any published summary of what changed. The responses varied sharply.

Some authorities held a central register and released deeds with only personal data redacted. Others said variations were not indexed by planning application, making it difficult to link a deed to the original permission. One council explained that variation deeds sit in legal files and are not routinely added to the planning register. Another released the deeds but withheld officer advice and legal commentary, citing legal privilege and commercial confidentiality.

That pattern matters because the deed alone often records the effect of a change without explaining why it was accepted. A schedule may show that a contribution fell from one figure to another. It may not show whether the council received a viability assessment, whether affordable housing was renegotiated, or whether planning officers considered the revised scheme acceptable. Without the decision record, the public can see the outcome but not the reasoning.

The changes that matter

The most consequential variations are often technical in appearance. An affordable housing obligation may switch from social rent to affordable rent, or from on-site provision to off-site provision. A commuted sum may be reduced, deferred or index-linked differently. A highways contribution may be pushed back beyond an agreed trigger. A public open space requirement may be replaced by a maintenance payment.

Each change may be defensible. A shift in tenure can reflect revised grant funding. A delayed trigger can reflect slower build-out. A cash payment can be appropriate where on-site provision is no longer practical. But each change also alters what the original permission was meant to deliver.

In the responses we reviewed, the level of explanation did not match the significance of the change. Some deeds were accompanied by a short officer report setting out the reason and the delegated authority. Others arrived with no narrative at all. In those cases, it was not possible to establish from the public record whether the variation had been considered by a planning committee, signed off under delegated powers, or approved by legal officers alone.

The scrutiny gap

Planning committees often focus on the application in front of them. A variation deed may be handled later through a delegation, a legal process or an officer decision. That can be efficient, but it can also remove the change from the forum where residents and councillors expect to see it.

The transparency regime does not close the gap. Councils are subject to the Freedom of Information Act 2000, and planning information may also fall under the Environmental Information Regulations 2004. But requests for legal advice can meet exemptions, and commercial confidentiality is routinely cited. Even where councils release a deed, they may not publish it proactively.

There is no single national register of Section 106 variations. Local land charges may record some obligations, but the picture is inconsistent. Planning registers are built around applications, not later legal agreements. Disclosure logs depend on the council. The result is that a resident who wants to know whether a promise has been rewritten may have to know that the variation exists before they can ask for it.

What better disclosure would look like

Not every variation needs a committee debate. But councils could treat material changes as planning decisions in their own right. A public variation register, linked to the original application, would be a start. So would a short published summary for each deed: what changed, why, who approved it, and what public benefit remains.

Councils could also set a threshold for committee oversight. Variations that reduce affordable housing, remove on-site provision, delay infrastructure or lower a financial contribution could be reported to the relevant planning committee, even if the final deed is executed under delegated authority. Legal privilege would still apply to advice, but it need not prevent the disclosure of the decision and its stated reasons.

None of this would stop legitimate renegotiation. It would allow the public to distinguish a sensible correction from a quiet dilution. The deed after the permission is where accountability can end, and that is precisely why it deserves more daylight.

The Ferret asked councils for variation deeds and decision records under freedom of information. Some authorities are still responding. This article will be updated if further substantive material is received.