Demolition in a conservation area: which consent applies

Demolition in a conservation area needs planning permission, not conservation area consent. Conservation area consent was abolished in England on 1 October 2013 by the Enterprise and Regulatory Reform Act 2013, and the work it used to control is now caught as "relevant demolition" requiring an ordinary planning permission, with a criminal offence attached under section 196D of the Town and Country Planning Act 1990. Outside a conservation area, demolition is usually permitted development under Part 11 of the General Permitted Development Order 2015, subject to prior approval of the method and restoration.

Getting the regime right matters, because the two routes have different application forms, different fees and very different consequences for getting it wrong.

Why conservation area consent no longer exists

The 2013 Act repealed the separate consent regime and folded the control into the planning system. Demolition of a building is ordinarily excluded from the definition of development by section 55(2)(g), but only for the descriptions of building set out in a direction made by the Secretary of State. The current direction on descriptions of buildings keeps demolition in a conservation area inside the definition, so permission is required.

That is the whole mechanism, and it explains why the application you submit is a full planning application rather than anything heritage-specific. There is no separate fee category and no separate form.

Two practical hangovers from the old regime persist. Officers and members still say "conservation area consent" in meetings. And older council validation checklists sometimes still list it, which causes confusion at the counter.

Relevant demolition and what it covers

Section 196D makes it an offence to carry out relevant demolition without the required planning permission, or otherwise than in accordance with it. Conviction on indictment carries an unlimited fine and imprisonment of up to two years.

Relevant demolition means demolition of an unlisted building in a conservation area, subject to exclusions in the direction. The exclusions matter on small jobs. Buildings below a stated cubic content are outside the control, as are means of enclosure below stated heights, with a lower height threshold where they abut a highway.

Partial demolition is the awkward case. Taking down a rear wing, removing a chimney stack or stripping a roof may or may not be demolition of "a building" depending on what remains. Where the works form part of an alteration scheme and the building survives as a building, they are usually treated as alteration rather than demolition, and they need permission only if they amount to development in their own right. Where the doubt is real, apply for the permission or take a certificate of lawfulness. Our companion note on when permission is needed for demolition in a conservation area works through the threshold cases.

Part 11 prior approval for demolition elsewhere

Outside conservation areas, Part 11 Class B permits the demolition of a building, with conditions. Where the demolition is not urgent, you must apply to the authority for a determination as to whether its prior approval is required for the method of demolition and the proposed restoration of the site, and you must not begin before the authority responds or the period expires.

The authority is restricted to those two matters. It cannot refuse because it likes the building, and it cannot use the process to require a replacement scheme.

Class C covers the demolition of gates, walls, fences and other means of enclosure outside conservation areas. Urgent demolition in the interests of safety or health has its own route, and it requires written justification to the authority as soon as reasonably practicable.

Boundary walls, gates and means of enclosure

This is where small householder and estate jobs go wrong. Inside a conservation area, taking down a boundary wall above the threshold height is relevant demolition and needs permission. Outside one, it is permitted development under Class C.

The height thresholds are measured as built, not as intended, and the lower threshold applies where the enclosure abuts a highway, waterway or open space. A rubble wall along a village street is very often protected, and it is very often removed for a new driveway without anyone applying.

Where a wall is in the curtilage of a listed building and predates 1 July 1948, it may also be curtilage listed, and then demolition is a criminal offence under separate legislation regardless of the conservation area position.

Evidence the council expects before demolition

Councils assess the loss of the building against the contribution it makes to the character or appearance of the conservation area, using the conservation area appraisal where one exists. The starting point is an assessment of significance, and that belongs in a Heritage Statement prepared before the demolition scheme is fixed.

Expect the authority to want, in addition:

• a structural appraisal where the case rests on condition, prepared by an engineer rather than a contractor
• a photographic record of the building, and on anything of interest a written record to the Historic England recording levels, delivered through a Historic Building Recording exercise secured by condition
• a bat and nesting bird check, because demolition without an ecology check risks an offence under separate wildlife legislation
• details of the replacement scheme, because the acceptability of what follows is central to the judgement

Deliberate neglect is not a justification. Where the condition argument is really the product of the owner leaving a roof open for a decade, officers will say so and members will remember it.

Sequencing demolition with the redevelopment consent

The long-standing concern with conservation areas is the gap site: a building comes down, the scheme stalls, and a hole sits in the street for years.

Councils address it in two ways. They refuse demolition unless an acceptable redevelopment scheme is consented, which is why the two applications are usually submitted together. Or they grant permission subject to a condition preventing demolition until a contract for the carrying out of the redevelopment works has been made and evidence of it supplied to the authority.

That second device is worth offering proactively where the programme is uncertain. A condition you have drafted and accepted is easier to discharge than one imposed late in committee. The detail of a heritage evidence base, and where archaeology sits alongside it, is covered in our comparison of a Heritage Statement and an Archaeological Desk-Based Assessment.

One more sequencing point. Where asbestos removal, soft strip or site clearance is planned ahead of the formal demolition, check whether any of it amounts to relevant demolition on its own. Contractors mobilise on the basis of a start date, and the offence attaches to the person carrying out the works as well as to the owner.

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

If you are assembling the documents for a conservation area redevelopment, browse the report types on PlanScope and start from the significance assessment. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.