If a building is listed, the short answer is:
If you are altering, extending, or removing anything that affects its character as a building of special architectural or historic interest — you probably need Listed Building Consent (LBC).
But the detail matters.
What Is a Listed Building?
A listed building is one included on the National Heritage List for England, administered by Historic England.
Buildings are graded:
- Grade I – Exceptional interest
- Grade II* – Particularly important
- Grade II – Special interest
Listing covers the entire building — interior and exterior — regardless of what is mentioned in the list description.
It also usually includes:
- Attached structures
- Boundary walls
- Outbuildings within the curtilage (if pre-1948)
What Requires Listed Building Consent?You need LBC if works would affect the building’s character.
This includes (but is not limited to):
External Works
- Replacing windows or doors (even “like for like”)
- Re-roofing in different materials
- Removing chimneys
- Altering rainwater goods
- Installing flues or extract terminals
- External signage
Internal Works
- Removing walls
- Altering staircases
- Replacing fireplaces
- Installing new bathrooms or WCs
- Changing floor finishes
- Exposing or removing historic fabric
There is no de minimis threshold. Small changes can still require consent.
What Does NOT Usually Require Consent?
Purely maintenance works that do not alter character:
- Repairing gutters like-for-like
- Localised repointing (with matching mortar)
- Minor decoration
However, “repair” is often misunderstood.
If you are replacing rather than repairing, consent may be required.
Listed Building Consent is separate from planning permission.
Do I Also Need Planning Permission?
You may need:
- Listed Building Consent
- Planning Permission
- Both
- Or neither
They are legally distinct applications.
What Happens If I Get It Wrong?
Carrying out unauthorised works to a listed building is a criminal offence.
Local Authorities can:
- Require reversal of works
- Prosecute
- Refuse retrospective consent
There is no time limit on enforcement.
How Is It Assessed?
Applications are considered by the Local Planning Authority’s Conservation Officer.
They will assess:
- Significance of the affected element
- Extent of intervention
- Justification for change
- Impact on historic fabric
A proportionate Heritage Statement is typically required.
Guidance is often aligned with principles promoted by bodies such as Historic England and conservation good practice.
Practical Advice
Before starting works:
- Confirm the building’s listing status
- Review the listing description
- Consider whether the works affect historic character
- Seek professional advice
- If in doubt — apply
Pre-application discussions can help de-risk proposals.
In Summary
If works alter the character of a listed building — internally or externally — you will need Listed Building Consent.
Early professional advice:
- Reduces risk
- Avoids enforcement issues
- Improves consent outcomes
- Protects historic fabric
If you are unsure whether your proposed works require consent, a short initial review can often clarify the position before any commitments are made.
Please contact Osbornes Chartered Architects to discuss your project and we can give you expert advice on how to proceed.