When do you need Listed Building consent and what is the process?
Getting listed building consent in the UK (including London) means you must follow a formal process under planning law whenever you want to alter a listed property in a way that affects its character.
Here’s a clear breakdown of what works need consent, plus the documents and process.
If required we can assist you with this and put you in contact with the best in this field, who will handle everything to make the whole process as stress free as possible.
You need consent for any works that affect the character or historic significance of the building.
Typical works that require consent:
| Type of works | Examples |
| • Structural changes | Removing or altering walls, floors, roofs. |
| • Internal alterations | Changing fireplaces, staircases, doors, mouldings. |
| • External changes | Windows, doors, roofing materials, extensions. |
| • Repairs using different material | Replacing timber windows with uPVC. |
| • Alterations to fixtures | Built-in cupboards, paneling, historic fittings. |
| • Demolition (partial or full) |
Important: Even internal works need consent—this is what surprises most people.
❌ Works that usually DON’T need consent:
- Like-for-like repairs using the same materials and methods.
- Minor maintenance (painting, cleaning, etc. ).
⚠️ But: This is a grey area—when in doubt, always check with your local council.
A listed building consent application typically includes:
Application form
- Submitted via the Planning Portal.
Drawings (existing + proposed)
- Floor plans.
- Elevations.
- Sections (if relevant).
- Details of changes (e.g. window profiles).
Heritage Statement (VERY important)
- The building’s historical significance.
- What you’re changing.
- Why the changes are justified.
- Impact on heritage value.
Design & Access Statement (sometimes required)
- Explains design choices and accessibility considerations.
Materials & method details
- Types of materials (e.g. lime mortar, timber).
- Construction techniques.
Photographs
- Current condition of the building and affected areas
Structural report (if needed)
- Required for major structural alterations.
- Pre-application advice (recommended)
Contact your local planning authority (LPA):
- In London, this could be Westminster City Council or your borough council.
They’ll:
- Advise if consent is needed.
- Highlight potential issues early.
- Prepare documents
Often involves:
- Architect.
- Heritage consultant (especially for Grade I/II*).
- Submit application
Via the Planning Portal:
- No fee for listed building consent itself (but you may pay for related planning permission).
- Validation
- Council checks your application is complete.
- Consultation period
- Neighbours may be consulted.
- Conservation officer reviews it.
- Bodies like Historic England may be involved for major works.
- Decision (usually 8 weeks)
Outcomes:
- Approved.
- Approved with conditions.
- Refused.
- Conditions discharge (if required)
- You may need to submit further details before starting work.
Carrying out work without consent is a criminal offence:
- You can be fined or prosecuted.
- You may have to reverse the work.
- Always assume consent is needed unless confirmed otherwise.
- Use traditional materials and methods.
- Keep as much original fabric as possible.
- Hire professionals experienced in listed buildings.