Listed building consent is needed for demolition, or alterations and extensions that affect a listed building's character as a building of special architectural or historic interest. The test applies to internal work as well as external changes. Planning permission and building regulations approval do not replace it.
This guide covers England. The central legal test is in section 7 of the Planning (Listed Buildings and Conservation Areas) Act 1990.
Check what is listed
Search the National Heritage List for England and read the full entry, including any express exclusions. Grade II status does not mean that only the front elevation is protected. Listing normally covers the whole building, including interiors, and can cover fixtures, attached structures and later additions. Historic England explains the scope of listing.
Certain structures within the building's curtilage can also be treated as part of the listed building. The statutory provisions address structures that have formed part of the land since before 1 July 1948. Whether an outbuilding qualifies needs a proper assessment of its relationship with the listed building; the modern ownership boundary or a missing separate list entry is not conclusive. See section 1 of the Act.
A list description is an identification record, not necessarily a complete inventory of important features. Absence of a staircase, fireplace or rear wing from the description does not establish that it is unprotected.
Does every repair need consent?
The question is the effect of the actual work on special character. A routine repair that leaves that character unaffected may not require listed building consent. Replacement, removal or a change of material can produce a different answer even where the owner regards it as maintenance.
Describe the method precisely. “Repair windows” might mean splicing small areas of decayed timber, replacing every sash, or installing entirely new units. Those are materially different proposals. Record what survives, its condition, what will be removed and how the new work joins the old.
The same applies to energy improvements. Insulation, secondary glazing, services and ventilation should be considered together with the building's fabric and significance. Do not assume that a small or concealed intervention is irrelevant to the consent test.
Which approvals could you need?
| Proposal | Questions to resolve |
|---|---|
| Removing an internal partition | Does it affect special character, and is listed building consent required? |
| Adding a rear extension | Are both planning permission and listed building consent needed? |
| Replacing roof coverings | What fabric and appearance change, and does the work affect character? |
| Altering an old garden outbuilding | Is it curtilage-listed or separately listed, and which controls apply? |
| New building near a listed house | Does the planning proposal affect its setting, even if it is outside the listing? |
These are prompts for assessment, not automatic answers. For example, an internal alteration may not require a planning application but can still require listed building consent. Development affecting a listed building's setting is considered through the relevant planning process; proximity alone does not make a separate new building listed.
Prepare a clear application
Start with the council's conservation officer and validation requirements. A useful submission usually brings together:
- Existing and proposed plans, elevations and sections at appropriate scales.
- A photographic record of the affected fabric and relevant surroundings.
- A proportionate assessment of the building's significance and the proposal's effects.
- A schedule identifying retention, repair, removal and new work.
- Detailed materials and methods where they affect historic fabric.
- An explanation of the options considered and why the chosen approach meets the project's needs.
A short, specific schedule can be more helpful than a lengthy generic heritage report. Coordinate it with the drawings so the documents do not disagree about what is being retained.
Worked example: opening up two rooms
Imagine an owner wants a larger kitchen in a listed cottage. The proposed opening crosses a wall that may contain early timber framing. The list entry mentions the exterior but says little about the interior.
The next step is to understand the wall and the rooms' significance, not to assume that the omission allows removal. Record the existing layout and visible fabric, consider whether a smaller opening could meet the brief, and establish the consent position before intrusive work. If consent is granted subject to detailed design or recording conditions, those requirements become part of the construction sequence.
Do not treat retrospective consent as a fallback
Executing or causing unauthorised works in contravention of section 7 can be a criminal offence under section 9. A later application does not erase the fact that unauthorised work has occurred. Historic England's consent guidance also explains the possibility of requiring reversal.
For a purchase or renovation, collect previous consents, approved plans and condition approvals. Where the building on site differs, establish the position before incorporating those alterations into a new design.
Sources and review
The linked legislation and Historic England guidance were compared on 8 September 2026 with automated research assistance. This source check is not professional sign-off on a building or repair method. For overlapping controls, read our conservation-area guide and permitted development guide.