Discharging conditions or amending a permission

A discharge of conditions application supplies the details a condition asks for. An amendment application changes what the permission allows. That is the whole distinction, and getting it wrong costs a determination period, because a council that receives details for something the permission does not authorise will refuse to approve them rather than treat the submission as an amendment.

The test to apply before submitting: does the approved drawing set already show what you are about to build? If it does, and a condition requires details of materials, drainage or landscaping, that is a discharge. If the thing you intend to build differs from the approved drawings, no amount of detail approval makes it lawful.

What each application achieves

Fees are set in the current fee regulations and are indexed, so check the published schedule rather than an old figure. Discharge applications are charged per request rather than per condition, which is the fee point most often misunderstood.

Discharging conditions without a second round

Councils bundle conditions into one approval where the submission covers them properly, and send the whole thing back where one item is missing. Three habits avoid the second round.

1. Address each condition under its own heading, with the condition text quoted and the response beneath it.
2. Supply exactly what the condition asks for. A condition requiring samples means physical samples or a sample panel, not a specification sheet, unless the wording says otherwise.
3. Submit conditions in groups that share a consultee. Drainage details go to the lead local flood authority, landscape details to the council's own officer, and mixing them in one submission means the slowest consultee sets the date.

Pre-commencement conditions have a further complication. Since 2018 a council must obtain the applicant's written agreement before imposing one, which means you have a say in the wording at decision stage. Use it. A condition requiring approval before any development begins catches demolition and site clearance, and starting those works without approval can make the whole permission vulnerable.

Fees per request and the sequencing decision

Because the fee is per request rather than per condition, there is an incentive to submit everything at once. That incentive works against you where one condition needs a survey you cannot complete for two months.

Split the submission by readiness rather than by convenience. Two fees paid on time cost less than one fee paid late alongside a stalled contract.

Deemed discharge and where it applies

Deemed discharge lets an applicant treat certain conditions as approved where the council has not determined the application within the prescribed period, after serving a notice on the authority. It is a useful lever and a narrow one.

The exclusions are wide. Conditions on applications subject to environmental impact assessment, conditions relating to habitats or to flood risk, and several other categories sit outside the regime, and the procedure requires a notice served no earlier than the point the regulations specify. In practice it is used more as a prompt in correspondence than as a route actually taken to the end.

Check the current exclusions before relying on it, because the list has been amended.

When an amendment is the cleaner route

Section 96A covers non-material amendments. There is no statutory definition of non-material, and it is judged in the context of the permission as a whole, so a change that is non-material on a large scheme may be material on a single dwelling. Typical uses are a repositioned window, a minor change to a house type, or a correction to a drawing reference.

Section 73 is the route for a change that is material but leaves the development substantially the same as permitted. It produces a new permission that sits alongside the original, with the same expiry date as the original where the original was still extant. The trap is well known from case law: a section 73 application cannot be used to alter the description of development on the decision notice, so a scheme described as "erection of 9 dwellings" cannot become 11 by varying a condition.

Section 73B was introduced by the Levelling-up and Regeneration Act 2023 as a further route for varying permissions. Check on gov.uk whether it is in force and what it covers before planning around it, because commencement of the 2023 Act provisions has been staged.

Evidence that satisfies a condition first time

Officers discharge conditions faster when the submission reads like a closed loop. The condition asked for X, here is X, and here is why it meets the reason given for the condition.

That last part matters more than practitioners expect. Every condition carries a stated reason, and the reason is the test. A landscape condition imposed in the interests of the character of the conservation area is discharged by a scheme that responds to that character, not by a generic planting schedule. Quote the reason and answer it.

Where the details depart from what the officer expected, say so openly in the covering letter and explain the change. Burying it in drawing revision clouds is how a discharge becomes a refusal and then an enforcement conversation.

Choosing between the routes in practice

Work through it in order. Is the proposed thing shown on the approved drawings? If yes, and a condition requires details, submit a discharge application. If no, is the change so small that it makes no material difference to the permission as a whole? Then section 96A. If the change is material but the development remains substantially what was permitted, section 73. If the description of development has to change, or the scheme is materially different, a fresh application is the only route.

The comparison between prior approval and planning permission follows a similar logic of matching the procedure to what is actually being decided, and we set that out in prior approval or planning permission. Where the question is whether works were lawful in the first place, the answer usually starts with a lawful development certificate.

The supporting case for a section 73 application belongs in a short Planning Statement explaining what changed and why the policy position is unaffected. You can also browse the report types that a variation may need updating, because an amended layout often makes the original drainage or ecology evidence out of date.

This is general guidance, not legal advice. Check the position with your local 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.