Evidence base for a discharge of conditions submission

Each planning condition defines its own evidence, so there is no standard list of discharge of conditions documents. What there is, on every permission, is a set of triggers: conditions to clear before any development starts, before work above slab level, before occupation, and some that run for the life of the development. Read the triggers first. A submission that arrives in the wrong order, or after the works it was meant to control, can leave a permission unimplemented.

Applications are made under article 27 of the Town and Country Planning (Development Management Procedure) (England) Order 2015. The determination period is eight weeks unless a longer period is agreed.

Read the condition before preparing anything

Conditions are drafted quickly at the end of an officer's report and they vary in quality. Three things to extract from each one before commissioning anything.

What has to be submitted, in the condition's own words. A condition requiring "details of materials" is satisfied by a schedule with manufacturer references. One requiring "samples of materials to be made available on site" needs a physical sample panel, which takes weeks to arrange.

When it bites. "Prior to the commencement of development" is the strictest. "Prior to commencement of development above slab level" lets groundworks proceed. "Prior to first occupation" gives you the whole build programme. Some conditions are drafted with a submission deadline, such as within six months of the date of permission, and those run from the decision date whether or not you have started.

Whose agreement is required. A condition that requires approval "in consultation with the lead local flood authority" or "in writing by the local planning authority following consultation with Natural England" imports a third party into the timetable.

Where a condition is unworkable as drafted, the route is an application under section 73 of the Town and Country Planning Act 1990 to vary it, not a discharge application that quietly submits something different. And note that under section 100ZA a pre-commencement condition cannot be imposed without the applicant's written agreement, subject to exceptions, which is worth remembering at the draft condition stage rather than afterwards.

One submission or several

The fee for an application for approval of details is charged per request rather than per condition, so bundling several conditions into one request costs less than submitting them individually. Fees are indexed annually from 1 April, so check the current schedule before budgeting.

The saving comes with a programme risk. A bundled request is not determined until the authority is satisfied on everything in it, so one unresolved condition holds up the rest. On a site where the start date is driven by a single pre-commencement condition, submit that one on its own and bundle the others.

A practical split that works on most residential schemes:

1. Request one, submitted immediately: the pre-commencement conditions that gate the start on site, usually contamination, archaeology, construction management, levels and drainage.
2. Request two, during groundworks: materials, boundary treatment, hard and soft landscaping.
3. Request three, before occupation: external lighting, cycle and bin stores, electric vehicle charging, travel plan, verification reports.

What each common condition actually needs

The evidence is specific to the condition, and a generic report rarely satisfies it.

Contamination conditions usually run in stages: a remediation strategy based on the site investigation, then a verification report after the works, plus a watching brief for unexpected contamination. The investigation and the verification must be prepared in accordance with BS 10175 by suitably qualified and experienced persons, and the authority will reject a strategy that is not grounded in the ground investigation data. Sites over sensitive groundwater carry extra requirements, including piling risk assessments, as described in the note on documents for a scheme in a Source Protection Zone. Where the original application included a Contaminated Land Assessment, the discharge submission builds on it rather than repeating it.

Archaeology conditions normally require a written scheme of investigation agreed before any ground disturbance, then fieldwork, then a post-excavation assessment and publication. The county archaeologist, not the planning officer, decides whether the scheme is adequate, and the approach set out in the note on which reports a scheme in an Archaeological Priority Area needs carries straight into the discharge stage.

Ecology conditions ask for a construction environmental management plan covering biodiversity, a lighting strategy keyed to bat activity, and evidence that mitigation has been built. Where a roost is involved, the licence position has to be resolved separately from the planning condition, as set out in the note on documents for a dwelling containing a known bat roost.

Construction management conditions want a document that a site manager can work from: routes, delivery hours, wheel washing, dust suppression, parking for operatives, hoarding and the complaints procedure. A Construction Management Plan drafted at this level of detail usually clears first time.

Landscaping conditions need a planting plan with a species and stock-size schedule, a soil specification, and a five-year management and replacement commitment. Materials conditions need a schedule with named products and, where asked for, a sample panel on site with a date for inspection.

Drainage conditions want the hydraulic calculations, the as-designed layout, and a maintenance and management plan naming the adopting body.

Conditions that cannot be fixed afterwards

A condition precedent is one that has to be satisfied before development begins. Where works start in breach of such a condition, those works may not count as a lawful implementation of the permission at all, which matters most when the three-year time limit is close to expiry. The permission can effectively be lost rather than merely breached.

The biodiversity gain condition sits in its own category. Where it applies, the biodiversity gain plan must be approved by the local planning authority before development begins, under the scheme introduced by the Environment Act 2021. That is a separate statutory process rather than an article 27 discharge application, and the statutory metric has to be completed by a competent person. Programme it as a gating item in its own right.

Where a pre-commencement condition has been overlooked after a start on site, take advice promptly. Options may include a fresh application, a section 73 application or, in some circumstances, a certificate of lawfulness, and the right route depends on the facts and on the condition's wording.

Timescales and deemed discharge

Eight weeks is the determination period, and authorities frequently take longer on consultee-dependent conditions. Section 74A of the Town and Country Planning Act 1990 and article 30 of the Development Management Procedure Order provide a deemed discharge mechanism: where the authority has not determined the request within the prescribed period, the applicant may serve a deemed discharge notice, and the condition is treated as discharged once the further period in the Order has run.

The exclusions matter. Schedule 6 to the Order takes a long list of condition types outside the mechanism, including conditions relating to development subject to environmental impact assessment and conditions requiring agreement with a third party. Check the schedule before relying on it, and keep using the mechanism to press for a decision rather than as a first resort, because an authority that disputes the discharge can still take enforcement action.

Keeping a condition tracker

Build the tracker on the day the decision notice arrives. One row per condition, with: the condition number, the full text, the trigger, the consultee involved, the evidence required, who is producing it, the target submission date, the request reference, the decision date and the approved document references.

Circulate it to the contractor and the design team, not just the planning consultant. Most breaches happen because a site manager did not know a condition existed, and the fix is a one-page summary of pre-commencement and pre-occupation items pinned in the site office. Keep the approved documents in a single folder with their reference numbers, because a purchaser's solicitor will ask for them and a missing approval can hold up a sale years later.

This is general guidance, not legal advice; check the position with your local planning authority or a qualified professional before relying on it. For specialist technical reports, qualified professional input may be required.

PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval. Browse the full set of 66 report types to see which documents a condition is likely to call for.