Lighting curfews and how councils word the condition

A lighting curfew condition that says "all external lighting shall be switched off at 23:00" will either be unenforceable, unreasonable, or both. It takes no account of emergency lighting, of movement-activated security lighting, of a building that operates at night, or of what happens when a tenant changes. Officers write conditions like that because the applicant supplied nothing better.

Supply something better. On most schemes the architect is in a position to draft the wording, and a condition you have written to match your own lighting design is one you can discharge.

What a curfew condition has to do

Four jobs, and a single sentence rarely does all of them.

It has to identify which lighting is caught, because external lighting, task lighting, wayfinding lighting, emergency escape lighting and signage illumination are different things with different justifications.

It has to state the hours and what happens during them, whether that is full extinction, a stated reduction, or a switch to a movement-activated mode with a maximum duration.

It has to state the exceptions, so that the condition does not conflict with fire safety requirements, with a premises licence, or with a security strategy the council itself asked for.

And it has to be capable of being checked. A council officer standing on the pavement at midnight has to be able to tell whether the condition is being complied with.

The six tests applied to lighting

Planning practice guidance sets six tests for conditions: necessary, relevant to planning, relevant to the development, enforceable, precise, and reasonable in all other respects. Lighting conditions fail on precision and enforceability more than on anything else.

Precision means numbers and references. Which luminaires, by drawing reference. What illuminance, in what units, at what location. Which hours, in the 24-hour clock. Which control system, by type.

Enforceability means the council can establish a breach without a specialist survey. A condition requiring a stated luminaire type at a stated aiming angle can be checked from a photograph. A condition requiring that lighting "shall not give rise to unacceptable levels of light spill" cannot.

A four-condition structure that works

Rather than one long condition, propose four short ones. They are easier to draft, easier to discharge, and easier to comply with.

1. An approval condition: no external lighting to be installed until a scheme has been submitted and approved, the scheme to include a luminaire schedule with make, model, output, correlated colour temperature and light distribution, mounting heights, aiming angles, an isolux plot to the site boundary and to identified windows, and the control system.
2. An implementation condition: the approved scheme to be installed before the use starts or before first occupation.
3. An operating condition: the curfew hours, the state of the lighting during them, and the exceptions.
4. A retention condition: the lighting to be maintained in accordance with the approved scheme, with no additional external lighting installed without further approval.

That last one is the condition most often left out and most often needed. Sites acquire lighting over time, a tenant fits a floodlight above a fire door, and there is nothing to enforce against.

A Lighting Assessment that ends with draft wording for all four is doing the case officer's job for them, which is generally how you get the wording you want.

Wording that fails

Four recurring failures.

Blanket switch-off where the operation continues. A distribution unit dispatching at 02:00 cannot extinguish its yard lighting, and a condition requiring it will be varied or ignored. Dimming to a stated level, with luminaires that are already specified to be dimmable, is the answer.

Silence on security lighting. Councils increasingly ask for schemes designed with crime prevention in mind, then impose curfews that forbid the lighting that delivers it. Movement-activated lighting with a maximum duration of a stated number of minutes, at a stated aiming angle, resolves the conflict.

Conditions on lighting the applicant does not control. Adopted highway lighting belongs to the highway authority. A condition purporting to control it is unenforceable against the applicant.

Curfews that conflict with a premises licence. A pub licensed until midnight with a lighting curfew at 22:30 has a problem in its car park. Check the licensing position before agreeing hours.

Uses that need particular care

Sports pitches attract more lighting objections than any other use. The workable formula ties the curfew to the end of play rather than to a clock time alone, with a short period afterwards for clearing the site, and a hard backstop time. Sport England publishes guidance on floodlighting design that is worth citing in the assessment.

Car parks and forecourts benefit from part-night operation with a reduced base level and movement-activated boost, which cuts obtrusive light and running costs at once. Specify the base level as a number rather than describing it as reduced, and say where on the site it is measured, otherwise the condition cannot be checked.

Where ecology is in play the curfew becomes a mitigation measure rather than an amenity control. If a Bat Survey identifies a commuting route or roost, the lighting condition may need to specify dark corridors, maximum illuminance on named features, colour temperature and directional control, and it may be tied to a licence. Surveys and any mitigation licence require a suitably licensed ecologist, so the wording should be agreed with them rather than drafted around them.

Where plant noise is also conditioned, keep the two sets of hours consistent. Nothing annoys an officer faster than a Noise Impact Assessment working to 23:00 and a lighting assessment working to 22:00 in the same submission.

Illustrative example: a retail unit with a 40-space car park backing onto gardens. The wording that works runs along these lines. No external lighting until a scheme is approved. The approved scheme installed before first use. Between 23:00 and 07:00, all car park lighting reduced to no more than the approved base level, save for luminaires operating under movement activation for a maximum of five minutes. And the lighting retained as approved, with no additional external luminaires installed without written approval.

Proposing the wording yourself

Send draft conditions to the case officer during determination, in a short email, with the drawing references filled in. Two things follow. The officer usually adopts most of it, because writing conditions is unbilled work for them too. And where they change it, you find out before the decision notice rather than after.

If the wording arrives wrong anyway, the routes back are a section 73 application to vary the condition, which costs a fee and around eight weeks, or a formal request to the authority to correct an obvious error. Neither costs as little as getting it right first time. Breach of a condition is enforced through a breach of condition notice, against which there is no appeal, so an unworkable condition is a live liability rather than a nuisance.

Browse the full list of report types if you are working out which supporting documents a scheme with external lighting is likely to need.

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.