Summary

Planning consent for demolition is one of the most commonly misunderstood areas of pre-demolition compliance. Many contractors assume that because they are knocking something down rather than building something new, planning law does not apply. This is wrong. Demolition is a form of development under the Town and Country Planning Act 1990, and failing to follow the correct procedure before starting work can result in an enforcement notice, injunction, or criminal prosecution — any of which will cost far more than getting the consent in the first place.

The regime varies significantly depending on what is being demolished and where it sits. For ordinary buildings in non-designated areas, prior notification (sometimes called a "prior approval" application) is the route — a lighter-touch process where the LPA has 28 days to respond. For buildings in Conservation Areas, the rules are considerably stricter, with full planning permission required. Listed buildings add another layer entirely, with listed building consent needed for virtually any works that affect their character.

Ecologists and protected species add a separate strand of compliance that runs in parallel with planning. Bats are perhaps the most frequently encountered species on demolition sites, and the consequences of disturbing a bat roost without an EPS licence can be severe — including prosecution under the Wildlife and Countryside Act 1981 and the Habitats Regulations 2017. Bird nesting season, tree protection orders, and Environmental Impact Assessment thresholds all feed into the planning picture. Getting ahead of these requirements before tendering is essential; discovering a bat roost after a demolition contract has been signed is a costly problem.

Key Facts

  • Prior notification is required under Schedule 2, Part 11, Class B of the GDPO 2015 for demolition of most buildings in England
  • 50 m³ threshold — buildings with a cubic content exceeding 50 m³ require LPA consent before demolition; structures below this may be exempt
  • 28-day determination period — the LPA must respond to a prior notification within 28 days; if they do not, permitted development rights apply
  • Conservation Area — demolition of any unlisted building in a Conservation Area requires full planning permission (not just prior notification) under Section 196D TCPA 1990
  • Listed Building Consent is required for any works to a listed building, including demolition of any part; this is a separate consent from planning permission
  • TCPA 1990 Section 55 defines demolition as a form of development for planning purposes
  • Pre-application enquiries to the LPA are strongly recommended for any demolition in a sensitive location
  • Bat roosts are protected under the Wildlife and Countryside Act 1981 (as amended) and the Conservation of Habitats and Species Regulations 2017 (Habitats Regulations)
  • EPS licence (European Protected Species mitigation licence) from Natural England is required before any works that disturb, damage, or destroy a bat roost
  • Bat survey season is May to August for activity surveys; winter roost surveys can be done September–November
  • Preliminary Roost Assessment (PRA) by a licensed bat ecologist is the first step — a desk study and site walkover to assess roost potential
  • Nesting birds — all nesting birds are protected under Section 1 of the Wildlife and Countryside Act 1981; avoid demolition work between March and August where possible, or commission a nesting bird survey immediately before work starts
  • Tree Preservation Orders (TPO) — if trees within or adjacent to the site are covered by a TPO, separate consent from the LPA is required before any works affecting them
  • EIA (Environmental Impact Assessment) may be required for larger demolition schemes under the Town and Country Planning (Environmental Impact Assessment) Regulations 2017; thresholds include urban development projects exceeding 0.5 ha in sensitive areas
  • Scotland and Wales operate separate planning regimes: Scotland uses the Town and Country Planning (General Permitted Development) (Scotland) Order 1992 (as amended); Wales uses the Town and Country Planning (General Permitted Development) Order 1995 (as amended by various Welsh Government instruments)
  • Enforcement — proceeding without consent can result in an enforcement notice, stop notice, or prosecution under Section 179 TCPA 1990

Quick Reference Table

Spending too long on quotes? squote turns a 2-minute voice recording into a professional quote.

Try squote free →
Scenario Consent Required Process
Detached outbuilding under 50 m³, non-designated area Generally exempt (check GDPO Schedule 2 Part 11) Notify LPA in writing
Building over 50 m³, non-designated area Prior notification under Part 11 Class B GDPO PA application to LPA, 28-day wait
Any building in a Conservation Area Full planning permission Full application to LPA
Any works to a Listed Building Listed Building Consent LBC application to LPA
Works affecting a bat roost EPS mitigation licence Apply to Natural England via licensed ecologist
Works during bird nesting season (Mar–Aug) Nesting bird check Survey by ecologist immediately before works
Trees with TPO on or adjacent to site TPO consent Application to LPA
Large urban development scheme (>0.5 ha sensitive area) Environmental Impact Assessment EIA screening request to LPA
Scotland demolition Building Warrant may be required Scottish local authority
Wales demolition Separate GDPO applies Welsh local planning authority

Detailed Guidance

Prior Notification Under Part 11 GDPO

The Town and Country Planning (General Permitted Development) (England) Order 2015 (GDPO) grants permitted development rights for certain types of demolition, but these rights are not unconditional. Schedule 2, Part 11, Class B requires the applicant to apply to the LPA for a determination of whether prior approval is required before starting work.

The prior notification application must include: a written description of the proposed demolition; a statement of the proposed method of demolition; details of proposed restoration of the site after demolition; and site location plan. The LPA has 28 days from receipt to respond. If they grant prior approval or do not respond within the 28-day period, demolition may proceed. If they require prior approval, their specific conditions must be met.

Buildings that are entirely exempt from the prior notification requirement are limited: structures with a cubic content not exceeding 50 m³ fall outside the requirement, as do gates, walls, fences, and other boundary treatments. Greenhouse and agricultural buildings may have separate exemptions. When in doubt, submit a prior notification — the cost is modest and the legal exposure of proceeding without one is significant.

Conservation Areas and Listed Buildings

Demolition in a Conservation Area is treated quite differently from demolition elsewhere. Section 196D of the TCPA 1990 (inserted by the Planning (Listed Buildings and Conservation Areas) Act 1990) removes permitted development rights for the demolition of unlisted buildings in Conservation Areas. Full planning permission is required, and the LPA will assess the application against the desirability of preserving or enhancing the character and appearance of the area.

The LPA can take enforcement action for unlawful demolition in a Conservation Area for up to four years from the date of the breach for buildings (10 years for other operations). In practice, this means enforcement action for demolition without consent can be taken long after the work has been completed.

Listed Building Consent (LBC) is a separate and additional requirement. Section 7 of the Planning (Listed Buildings and Conservation Areas) Act 1990 requires LBC for any works to a listed building that affect its character as a building of special architectural or historic interest. This applies to all grades (I, II* and II) and includes demolition of any part of the building, not just the whole structure. Unlawful works to a listed building are a criminal offence under Section 9 of the Act, with unlimited fines and up to two years' imprisonment on conviction.

Bat Surveys and EPS Licensing

Bats and their roosts are protected at all times under the Wildlife and Countryside Act 1981 (as amended) and the Conservation of Habitats and Species Regulations 2017. It is a criminal offence to deliberately capture, injure, or kill a bat; deliberately disturb bats (including impairing their ability to survive, breed, or nurture young); and damage, destroy, or obstruct access to a roost (even when bats are absent). Penalties include unlimited fines and up to six months' imprisonment.

The standard ecological approach on a demolition project runs in three stages. First, a Preliminary Roost Assessment (PRA) — a desk study and site walkover by a licensed bat ecologist to assess the roost potential of the building. This can be done at any time of year. If the PRA identifies low potential, no further survey may be required. If it identifies moderate or high potential, the ecologist will specify further surveys.

Second, activity surveys — typically two or three dawn/dusk emergence surveys during the active season (May–August preferred; some surveys can extend to early September). These surveys confirm whether bats are using the building and, if so, which species and in what numbers.

Third, if a roost is confirmed and the works cannot avoid it, a mitigation licence (also called a European Protected Species licence or EPS licence) must be obtained from Natural England before works start. The licence application is made by a licensed consultant and must include a detailed method statement for how bats will be protected or relocated. Lead times for EPS licences are typically 30 days but can be longer in peak season (May–September). This can add months to a demolition programme if not identified at tender stage.

Nesting Birds and the Vegetation Clearance Window

All wild birds and their active nests are protected under Section 1 of the Wildlife and Countryside Act 1981. The main nesting season runs from March to August, though some species (notably certain pigeons, rooks, and corvids) can nest year-round. Demolition contractors should plan vegetation clearance and roof stripping outside the March–August window where possible. Where this is not practicable, a nesting bird check by a qualified ecologist immediately before works start (ideally the same day) can confirm whether active nests are present. If they are, work in that area must stop until the nest is vacated naturally.

Common nest locations on demolition sites include: eaves and soffits (swallows, house martins, swifts — some of which are Species of Conservation Concern and carry additional weight in planning decisions); roof voids (starlings, sparrows); vegetation and scrub adjacent to the building; and in voids within masonry walls.

When an Environmental Impact Assessment Is Required

An EIA (Environmental Impact Assessment) is a formal assessment of the likely significant environmental effects of a project before it proceeds. For demolition projects, the relevant regulations are the Town and Country Planning (Environmental Impact Assessment) Regulations 2017.

EIA is typically required for large demolition schemes that form part of a wider development project — for example, clearing a brownfield site for a major urban regeneration scheme. The screening thresholds that trigger an EIA include: urban development projects exceeding 0.5 ha in sensitive areas (including Conservation Areas and areas of special scientific interest); and any project that the LPA considers likely to have significant environmental effects.

If you are unsure whether an EIA is required, you can submit a screening opinion request to the LPA. They must respond within 3 weeks. This is low cost and provides certainty. Proceeding with a project that should have been subject to EIA without obtaining one can render any subsequent planning permission unlawful.

Frequently Asked Questions

Do I need planning consent to demolish a garden wall?

Generally, no — boundary walls, gates, and fences do not require prior notification under Part 11 of the GDPO. However, if the wall is within a Conservation Area, forms part of the curtilage of a listed building, or is the subject of a specific planning condition protecting it, consent will be required. Always check with the LPA if in doubt.

How long does a prior notification application take?

The LPA has 28 days from receipt of a valid prior notification application to make its determination. In practice, most authorities respond within this window, but complex or contentious cases can run closer to the deadline. Submit as early as possible. A prior notification cannot be submitted until the site has been acquired or the applicant has the owner's written consent.

What happens if a bat roost is found after demolition has started?

Works must stop immediately. Continuing to work after discovering a bat roost (even accidentally) is a criminal offence. The licensed ecologist should be contacted to assess the roost and advise on next steps, which will typically include an emergency licence application to Natural England. Inform the client immediately — the programme impact and cost recovery provisions in the contract will need to be reviewed. This situation is preventable with a PRA at tender stage.

Is prior notification the same as planning permission?

No. Prior notification is a lighter-touch process that gives the LPA the opportunity to require prior approval for specific aspects of the demolition method (method of demolition, restoration of the site). It does not grant permission for the development that will follow on the site. If the site is to be redeveloped, a separate planning application for the new development will be required.

What is the fine for demolishing a listed building without consent?

Unlimited fine plus up to two years' imprisonment under Section 9 of the Planning (Listed Buildings and Conservation Areas) Act 1990. This applies to the person carrying out the works and, in certain circumstances, can also apply to the person who instructed the works (e.g. the demolition contractor's director). Courts have imposed substantial fines in high-profile cases. This is not an area where enforcement discretion can be relied upon.

Regulations & Standards