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Planning FAQ

Can I extend if my home is listed?

Yes, but you need Listed Building Consent alongside planning permission. Heritage Statement required. Grade I/II* always involve Historic England.

Architectural detail on a London period property — planning drawings in London
Short answer

Yes, but you need listed building consent as well as any planning permission, and the design has to be justified against the building's significance. Listed building consent carries no fee, and unauthorised works are a criminal offence with no immunity period.

What is actually protected?

The whole building, inside and out, anything fixed to it, and any pre-1948 structure within its curtilage in the same ownership. The listing description is a finding aid, not a schedule — something unmentioned is still protected if it contributes to special interest.

Grade II covers around 92% of listed buildings, Grade II* about 6% and Grade I about 2.5%. The grade affects the weight given to harm, not whether consent is needed.

What tends to get consent?

Extensions that are subordinate, reversible, and clearly of their own time rather than pastiche; work to later unsympathetic additions rather than to original fabric; and schemes that remove a previous poor alteration as part of the proposal. Glazed links, lightweight rear additions and interventions into a twentieth-century wing all fare better than a full-width masonry box.

What does the application need?

A heritage statement describing significance proportionately and assessing impact, measured survey drawings of the existing building, detailed proposed drawings — often at 1:5 or 1:10 for junctions with historic fabric — and a schedule of works. The NPPF requires clear and convincing justification for any harm.

What are the consequences of getting it wrong?

Unauthorised works to a listed building are a criminal offence under the 1990 Act with no four- or ten-year immunity. A listed building enforcement notice can require reinstatement decades later, and prosecution can follow on indictment.

What does this mean for a London project?

Can I extend if my home is listed? in a Bexley context: London Borough of Bexley (Bexley Council) runs 16 conservation areas including the Bexley Village Conservation Area and the Old Bexley Conservation Area, and there is no borough-wide Article 4 direction, so permitted development generally survives outside conservation areas. That decides how can i extend if my home is listed? is handled: £548 and 8 weeks for a Bexley householder application, or £274 for the Lawful Development Certificate that records can i extend if my home is listed? as lawful. The law behind can i extend if my home is listed? sits in the Town and Country Planning Act 1990, the GPDO 2015 and the Building Regulations 2010.

Key figures

Key figures for Can I extend if my home is listed?
Consent required forWorks affecting character, inside and out
FeeNone
Determination period8 weeks
GradesI (2.5%), II* (6%), II (92%)
Curtilage protectionPre-1 July 1948, same ownership
Immunity periodNone

Related questions

Do I need consent for internal work?

Yes, wherever it affects special interest — partitions, joinery, fireplaces, staircases.

Is there a fee for listed building consent?

No, though a parallel planning application may still carry one.

Can I replace the windows?

Only with consent, and usually only on a like-for-like basis unless the existing are later replacements.

A printed planning application drawing set — proposed elevations, floor plans and the os location plan with the site outlined in red — can i extend if my home is listed in London
The planning set that goes to the council through the Planning Portal: proposed elevations, plans, and the OS location plan with your site outlined.
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Can I extend if my home is listed? in London — a London terraced street of the type we survey
A london terraced street of the type we survey — can i extend if my home is listed? in London.

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