Discharging planning conditions before you start on site

A planning permission is not a licence to start work. Most decision notices carry conditions that have to be formally discharged before anything happens on site, and starting without them can mean the permission was never lawfully implemented. A discharge of conditions application is the mechanism, and on a small housing site it is worth beginning it the week the decision arrives rather than the week the groundworker is booked.

Read the decision notice properly first. People skim it, spot the conditions they expected and miss the one that matters.

Reading your decision notice condition by condition

Conditions fall into three groups by timing. Some must be discharged before any development begins. Some must be discharged before a stated stage, usually occupation or first use. Some are compliance conditions that simply bind you for the life of the permission, such as hours of construction or a restriction on future extensions.

Go through the notice and mark each condition with its trigger. Then note what evidence each one actually asks for, because the wording varies more than people expect. A condition requiring "details of external materials" is satisfied by a schedule and samples. A condition requiring a scheme "to be implemented as approved" needs the scheme first and the implementation later, and it stays live after the details are agreed.

Note also that a council cannot impose a condition requiring matters to be dealt with before work starts without the applicant's written agreement, following the procedure in section 100ZA of the Town and Country Planning Act 1990 and the regulations under it. If you were never asked, raise it before the decision is issued rather than afterwards.

Which conditions bite before any work starts

The usual ones on a small residential site are drainage details, contamination investigation, ecology mitigation, tree protection, a construction management plan, archaeology where the site sits in a sensitive area, and levels.

Two deserve attention early because they involve fieldwork with lead times.

Drainage details normally require infiltration testing, which cannot be done in the wrong ground conditions and often needs a rig. The design has to be consistent with the flood risk position the council took, so read the council's strategic flood risk assessment before your engineer starts and set the Drainage Strategy against it.

Ecology mitigation may require a survey in a specific season. A condition requiring a bat mitigation scheme on a barn conversion cannot be discharged in December, and no amount of chasing the case officer changes that.

The application, the fee and the clock

Discharging conditions is done through an application for approval of details reserved by a condition. It carries a fixed fee per request rather than a fee per condition, with a lower figure for householder development, and the amounts are indexed. Work out what you owe before you submit, since an incorrect fee stops the application being valid.

Councils are expected to determine these within eight weeks unless a longer period is agreed. In practice, discharge applications sit behind new applications in the queue, so build the time into your programme. There is a deemed discharge route for certain conditions on certain application types, where the applicant serves notice and approval is treated as given if the council does not respond in time. Several categories are excluded from it, so check whether your condition qualifies before relying on it.

Bundling conditions into one submission

Because the fee is charged per request, submitting conditions 4, 6, 9 and 11 together costs the same as submitting condition 4 alone. That is an argument for bundling, and usually the right one.

There are two counter-arguments. A bundle is only as fast as its slowest element, so a condition needing a consultee response from the lead local flood authority will hold up the materials schedule sitting next to it. And a partial discharge leaves you needing a second application anyway. The practical answer on most sites is two submissions: one early bundle of everything that is ready, and a second for the items with survey or testing lead times.

Write a short covering letter listing each condition, quoting its wording, and stating which document answers it. Officers process these in batches and a submission that maps itself is dealt with faster.

Name the drawings and reports by their title and revision in that letter, and use the same references on the drawings themselves. Half the delay on discharge applications comes from an officer being unable to work out which of four similarly named PDFs is the one being relied on.

The risk of starting without discharge

This is the part that costs money.

Where a condition properly goes to the start of development, works carried out in breach of it are not a lawful implementation of the permission. On a permission close to the end of its three-year life, that can mean the permission expires while you believe you have built it out. The principle comes from the courts rather than the statute and it has been applied more than once, so it is not a theoretical risk.

The consequences stack up. Enforcement action against the breach. A permission that may have lapsed, requiring a fresh application under current policy. A Community Infrastructure Levy surcharge where the liability paperwork was tied to a start date you cannot now rely on. And a mortgage lender or purchaser's solicitor who finds all of it at the worst possible moment.

If you have already started, say so when you submit the discharge application. Councils deal with this regularly and an honest sequence is easier to resolve than a discovered one.

Evidence officers ask for on materials and drainage

Materials conditions are satisfied by a schedule naming manufacturer, product and reference for brick, roof covering, windows, rainwater goods and any render or cladding, together with physical samples or a sample panel where the site is sensitive. Photographs of a comparable building are useful. A line saying "brick to match existing" is not.

Drainage conditions want the infiltration test results with locations and dates, the calculations for the attenuation volume including the climate change allowance used, a drawing showing the system and its outfall, and a maintenance schedule saying who will maintain each element and how often. On a site with a shared private drain, expect a question about legal rights to discharge.

Construction management conditions want haul routes, wheel washing, working hours, contractor parking and a contact number for residents. Much of this overlaps with the Construction Management Plan you may already have prepared for the application itself.

An illustrative example. On a two-plot infill with permission granted in March, an early bundle covering materials, levels and construction management is submitted in April and approved in June, while infiltration testing waits for the ground to dry and the drainage condition is discharged in August. Work starts in September, six months after the decision. That sequence is illustrative only, but it is a realistic one.

You can check which supporting documents a site is likely to need and draft them before the decision arrives, so the discharge stage is a matter of assembling evidence rather than starting from scratch. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.

This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it.