Section 42 applications in Scotland to change conditions

A section 42 application Scotland is the route for changing a condition on a planning permission that has already been granted, under section 42 of the Town and Country Planning (Scotland) Act 1997. It is the Scottish counterpart of the English section 73, and the practical differences matter enough that English precedent should be used with care. The authority looks only at the conditions, not at whether the development should have been permitted at all. If it agrees the conditions should be different, it grants a fresh permission carrying the amended conditions. If it decides they should stay as they are, it refuses.

This article deals with Scotland only.

What a section 42 application can change

The application is for planning permission for the development of land without complying with conditions attached to a previous permission. In practice it covers three situations.

The first is a condition that has become impossible or uneconomic to meet, such as a materials condition naming a product no longer manufactured, or a phasing condition overtaken by how the site has actually been built out. The second is a condition needing a minor design change, where an approved plans condition is re-drawn to show a revised elevation or a shifted plot. The third, and the most common on live sites, is a pre-commencement condition the contractor cannot discharge on the programme agreed.

What it will not do is undo the permission itself. The authority's consideration is confined to the conditions, so an applicant who wants the principle re-examined is in the wrong process.

The limits on altering the description

The description of development on the original decision notice is the boundary of the application. Section 42 varies conditions attached to a permission for that development, and it cannot be used to permit something materially different.

That sounds obvious until a scheme has evolved. Adding a storey, changing the number of units, changing the use of a building or extending the site boundary are all outside it. Scottish authorities are generally stricter about this than developers expect, and a section 42 application that reads as a new scheme in disguise tends to be refused or invalidated rather than negotiated.

The honest test is whether a member of the public reading the original description would recognise what is now proposed. Where the answer is no, a fresh application for planning permission is the correct route, and starting there saves several months.

Fees, timescales and procedure

A section 42 application is made to the planning authority on the standard application form, identifying the permission by its reference and decision date, listing the conditions to be varied and setting out the proposed replacement wording in full. A short supporting planning statement explaining why each condition should change is not a validation requirement everywhere, but it does most of the work of persuading the case officer.

Determination periods follow the Scottish development hierarchy. Local developments carry a two month period and major developments four months, running from validation rather than submission. Fees are set by the Scottish fee regulations and are revised periodically, so check the current schedule rather than the figure quoted on an older application.

Neighbour notification and publicity requirements apply as they would to any application, which surprises applicants who assume a condition change is a private matter between them and the case officer. Where the original permission was for a major or national development, pre-application consultation obligations should be checked before anything is submitted.

How the new permission relates to the old one

A grant under section 42 creates a new planning permission. The original permission is not cancelled and both continue to exist, so the developer can build out either one. That is useful when a variation turns out to be unnecessary and the original consent is still the cleaner route.

It also creates traps. The new permission carries its own set of conditions, and every condition from the original that is still needed has to be carried across expressly. Conditions left off the new decision notice do not apply to it. Officers usually re-impose the full schedule, but the responsibility for checking sits with the applicant, and a discharged condition that reappears in full on the new notice has to be discharged again.

A section 42 permission is also not a way of buying more time. Where the period for beginning development has run out or is close to running out, varying a condition will not restart it, and the authority will normally tie implementation back to the original permission. If the permission is about to lapse, a fresh application is the realistic option. Confirm the position with the planning authority before relying on either route.

Conditions carried forward or dropped

Before drafting, build a table of every condition on the original permission with four columns: the condition number, its current status, whether it should be carried forward, and the proposed wording.

Work through it with the site team. Conditions already discharged in full should be identified as such so the authority can decide whether to re-impose them or record them as satisfied. Conditions that have become redundant because the relevant works are complete can be argued out, but the argument has to be made rather than assumed.

Planning obligations need separate attention. An agreement under section 75 of the 1997 Act is tied to the permission it was made for, and it does not automatically attach to the new permission created by a section 42 grant. The fix is either a deed of variation or a new section 75 agreement completed before the decision is issued, and the same logic applies to the equivalent devolved regimes, including section 76 agreements in Northern Ireland. Leaving it out is one of the more expensive mistakes on this route, because the authority will not release the decision notice until the obligation position is sorted.

Where a fresh application is the better route

Section 42 is the wrong tool in several situations that come up regularly.

1. The change alters the description of development or the redline boundary.
2. The permission has expired, or will expire before the section 42 application is determined.
3. The original permission is vulnerable, for example because the policy position has moved against it, and reopening it invites a refusal on the merits of the conditions that protects nothing.
4. Several conditions are being changed at once in ways that cumulatively amount to a different scheme.
5. The applicant wants certainty that what is built is lawful, in which case a certificate of lawfulness may be the more direct answer.

Non-material variations are handled separately in Scotland under section 64 of the 1997 Act, which deals with notices of variation for changes that are not material. For small changes that route is quicker and less costly than section 42, and it is worth asking the case officer which they would prefer before committing.

Common drafting errors

Three errors account for most of the refusals and invalidations.

Vague replacement wording is the first. An application that asks to vary condition 6 without setting out the exact words proposed leaves the authority drafting on the applicant's behalf, and what comes back is often more restrictive than what was wanted. Write the condition as you want it to read.

The second is misidentifying the condition. Where a permission has already been varied once, condition numbers change between decision notices, and applications routinely cite numbers from the superseded notice. Always quote from the most recent operative permission and attach it.

The third is silence on the reason for the condition. Every condition was imposed for a stated reason, and a section 42 application that does not address whether that reason still applies gives the officer nothing to work with. Deal with the reason directly, and where the planning circumstances have changed, evidence the change.

Where the variation touches technical matters such as drainage, noise or ecology, the supporting evidence needs to be current rather than a copy of what was submitted years earlier. PlanScope's drafting is grounded in English national policy and English local plans, so a Scottish application needs the reviewer to check the position against National Planning Framework 4 and the relevant local development plan before submission.

This is general guidance, not legal advice. Check the position with your planning authority or a qualified professional before relying on it. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval. To see which supporting documents a variation is likely to need, browse the 66 report types, or enter the site postcode on PlanScope and work through the guided questions.