Planning Permission for Kitchen Extraction UK

Commercial kitchen extraction may need planning permission when it introduces external ductwork, fans, terminals or other material changes to a building. A change of use or planning condition may also affect the proposal. Requirements are site- and authority-specific, so check with the relevant planning authority before ordering or installing equipment.

Planning permission is not the same as Building Regulations

Planning considers whether the development and its effects are acceptable—for example appearance, noise, odour and neighbour impact. Building Regulations address technical requirements for building work such as fire safety, ventilation, structure and access.

A project may need both. Landlord or freeholder approval is separate again.

Common planning triggers

Seek advice where the proposal involves:

  • an external duct or flue;
  • roof-mounted or wall-mounted fans;
  • a terminal visible from the street or neighbouring property;
  • work to a listed building;
  • a site in a conservation area;
  • a change in the lawful use of the unit;
  • new late-night operating hours;
  • cooking that differs from an existing permission or condition;
  • discharge close to homes, windows or balconies;
  • plant likely to create noise or vibration;
  • a low-level discharge or constrained courtyard;
  • new solid-fuel cooking.

Do not assume that replacing an old system is automatically permitted if the location, size, duty or appearance changes.

What the council may ask to see

Validation requirements vary, but a useful submission can include:

  • site and location plans;
  • floor plan and equipment schedule;
  • elevations showing the complete duct route and terminal;
  • photographs and visual treatment;
  • menu, cooking methods, hours and capacity;
  • canopy and design airflow information;
  • fan make/model, duty and sound data;
  • attenuator and anti-vibration measures;
  • odour and grease control stages;
  • discharge height, direction and velocity;
  • nearby sensitive receptors;
  • cleaning, filter replacement and maintenance plan;
  • specialist noise or odour assessment where requested.

Submit coordinated information. A fan brochure without the real operating point or a carbon-filter label without media and airflow information may not answer the planning concern.

Odour risk

The odour question combines:

  • cooking type and intensity;
  • size and hours of operation;
  • grease and smoke load;
  • filtration/abatement;
  • discharge dispersion;
  • proximity and sensitivity of receptors;
  • maintenance.

EMAQ+ publishes specialist guidance for control of odour and noise from commercial kitchen exhaust systems. As of August 2026 it lists Version 3: EMAQ+ report.

Some local authorities request a risk assessment based on this approach. A low-risk coffee shop and a high-intensity chargrill beneath flats should not receive the same generic equipment schedule.

High-level versus low-level discharge

High-level unobstructed discharge often improves dispersion and reduces the chance that the plume immediately reaches windows or street level. Local guidance may strongly prefer a terminal above relevant roofs.

Low-level discharge is not automatically made acceptable by adding filters. Even a good treatment train has limits and maintenance dependency. For an example of a stringent local approach, see Westminster's commercial kitchen extract guidance.

The actual acceptability depends on the site and authority.

Noise and vibration

Noise can come from:

  • fan casing and motor;
  • air moving through grilles, filters and terminals;
  • duct breakout;
  • turbulence at bends or restrictions;
  • vibration transmitted into the structure;
  • poorly selected attenuators;
  • plant cycling or running late at night.

The fan should be assessed at its intended operating duty, including system resistance. A catalogue sound figure from a different duty may be misleading.

Planning guidance recognises that restaurants and takeaways can create particular evening and night-time impacts: GOV.UK planning guidance on noise.

Appearance and access

The visually smallest proposal is not always the best technical solution. Boxing a duct tightly can remove inspection access, alter fire performance or make cleaning impossible.

Coordinate:

  • external finish and supports;
  • distance from windows and boundaries;
  • roof penetrations;
  • safe cleaning and fan access;
  • fire-rated enclosure where required;
  • ownership of the route;
  • rights to enter neighbouring or landlord areas;
  • how components will be replaced.

The planning drawing should not conceal critical maintenance realities.

Planning conditions continue after approval

Permission may be conditioned around:

  • approved drawings and equipment;
  • operating hours;
  • noise limits;
  • odour-control stages;
  • maintenance and filter replacement;
  • installation verification;
  • use of specific discharge arrangements;
  • restrictions on cooking type.

Keep the decision notice and approved documents with the operating and maintenance file. Changing the menu, appliance or system later may require review.

Planning approval does not authorise nuisance

GOV.UK explains that smells from restaurants and noise from premises can be investigated as potential statutory nuisances. Where the legal test is met, a council must serve an abatement notice: statutory nuisances.

The system therefore needs to remain maintained and suitable in real operation, not only look acceptable on an application drawing.

Check the site before committing

Use the KIG 221 Commercial Kitchen Site Survey Sheet to record duct routes, neighbouring receptors, landlord constraints, utilities and planning questions before signing a lease or finalising equipment.

Sources and further reading

This is general UK information, not planning advice or confirmation that permission is or is not required. Check the relevant planning authority, UK nation, lease and site constraints. Last reviewed: 13 August 2026.