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Heritage Statement for an Unlisted Property: Why the Council May Ask for One
You have submitted plans for an extension, replacement building or change of use. The council then asks for a heritage statement, even though your property is not listed. It can feel like an unexpected obstacle, particularly when you thought the heritage checks were already complete.
The explanation is usually that planning considers more than the listing status of the building being altered. Your proposal may affect a conservation area, the setting of a nearby listed building, or another asset with recognised heritage interest.
A proportionate heritage statement should explain that relationship and assess the actual proposal. It should not simply add a history chapter to the application or assume that an unlisted property has no heritage implications.
Why “not listed” does not settle the planning question
There are three common routes by which an unlisted property can raise heritage considerations.
First, it may lie within a conservation area and contribute to the character of that area. Secondly, development on the site may affect how a nearby heritage asset is experienced or understood. Thirdly, the property itself may have been identified as a non-designated heritage asset or an asset of local historic interest.
These are not interchangeable categories. Your report needs to identify which issue applies and explain why it matters to the specific works.
Begin with the council's request. Does it name an asset, refer to a conservation area appraisal or identify an effect on setting? If the request is unclear, seek a precise explanation of the missing assessment before commissioning a generic report.
England: use the current planning framework
England's National Planning Policy Framework, published on 17 August 2026, includes heritage decision-making policies in chapter 20.
Policy HE5 expects proposals affecting heritage assets to be accompanied by an assessment of significance, including the contribution of setting, and the proposal's potential effects. The detail should be proportionate. The framework also addresses non-designated heritage assets and conservation areas through policies HE7 and HE9.
The practical lesson is straightforward: the assessment is driven by the heritage asset and the effect of the proposal, not simply by whether your own address appears as a listed building.
Use the current framework alongside the relevant development plan and application requirements. Older templates may cite superseded paragraph numbers and should not be copied without checking.
Wales: a separate policy and assessment route
The English NPPF does not apply to Welsh applications. In North Wales, the relevant national framework includes Planning Policy Wales, alongside applicable local policies and Welsh historic environment guidance.
Cadw's guidance on the setting of historic assets explains that applicants should provide enough proportionate information for the planning authority to assess the likely effects on an asset and its setting.
Cadw's approach considers relationships with the surrounding landscape and other historic features, not just the ownership boundary. Its guidance also explains that a setting assessment may form part of a heritage impact statement.
A document prepared for an English project should therefore not be reused unchanged for a Welsh site. Agree the required assessment, terminology and submission documents with the relevant authority.
Setting is more than a distance on a map
A proposal can affect heritage significance without touching the historic building itself. The important question is what the surroundings contribute to the asset and whether the proposed change would alter that contribution.
Historic England's guidance on the setting of heritage assets provides an approach to identifying assets, understanding setting and assessing change. It recognises the role of views, but setting is not simply a visual exclusion zone.
There is no useful substitute for examining the relationship on the ground. Two neighbouring buildings may have little meaningful relationship, while a more distant development can affect an important approach or historic landscape connection.
A sensible scoping discussion therefore asks which assets and viewpoints need assessment, and why. It should not start with an arbitrary promise to study every listed building within a fixed radius.
Three illustrative situations
A rear extension to an unlisted house
The key issue may be the conservation area's historic layout or the relationship between gardens, outbuildings and the street. A rear location does not, by itself, demonstrate that a proposal has no heritage effect.
Ask the designer and heritage adviser to explain the particular contribution of the affected part of the site. Photographs, plans and a reasoned assessment can be more useful than pages of general local history.
A new building beside a listed property
The questions might concern height, position, separation and how the listed building is approached or seen. A photograph taken from the application site's entrance may not show the most relevant relationship.
Before finalising the design, agree whether additional views, sections or contextual elevations would help explain the proposal. The assessment should guide the design while changes remain practical.
Alterations to a locally valued building
A building can have recognised local heritage interest without being nationally listed. Cadw's guidance on historic assets of special local interest explains the role of local identification in Wales.
Do not assume that local interest creates exactly the same controls as statutory listing. Equally, do not dismiss it because a national listing search returns no result. Establish the status and the planning issue before deciding what evidence is needed.
These are illustrative scenarios, not descriptions of particular AMS projects or predictions of a council's decision.
What a focused heritage statement should contain?
A useful report creates a traceable connection between evidence, significance, proposals and conclusions. The following structure helps keep it relevant.
Identify the asset and its significance
Set out which heritage asset is affected and what is important about it. Use relevant records, the council's conservation area appraisal where applicable, historic mapping and site observations.
Research should answer a question. A lengthy account of the town's development is of limited use if it does not explain the building, space or relationship that the proposal would change.
Describe the proposal accurately
Identify the drawings assessed and their revisions. State the changes clearly, including removal, replacement and new construction where relevant.
A report on an earlier design can become misleading even when the title and address remain correct. Keep the heritage adviser informed when the architect changes heights, materials, openings or the footprint.
Assess effects and explain design choices
Explain how the proposal affects the identified significance. Distinguish evidence from assumption and discuss meaningful alternatives where they help resolve the heritage issue.
If a design change reduces an identified effect, show what changed and why. Do not rely on a blanket statement that the scheme is “sympathetic” without explaining the relationship.
For the wider report-writing process, see our guide to heritage statements that support planning applications.
What a heritage statement does not replace
A heritage statement is evidence for an application, not permission to start work. It also does not automatically answer structural, condition, ecology, drainage or building regulations questions.
Keep the different approvals separate. Being near a listed building does not, by itself, mean that every alteration to your own property requires listed building consent. However, the legal extent of a listing and any uncertainty about structures associated with it need checking with appropriate advice.
Similarly, a building survey can explain defects and repair needs without assessing the planning effects of a new design. Our heritage consultancy service can help identify which advice is relevant, rather than treating every historic-property enquiry as the same appointment.
Reduce avoidable delays before submission
Send the adviser the council's correspondence, existing and proposed drawings, the site address and any previous application reference. Include the submission deadline and explain whether the design is still flexible.
Ask the quotation to distinguish the initial assessment from later revisions, meetings or responses to the conservation officer. This makes the appointment and programme clearer.
Before submitting, check that the statement refers to the final drawings, assesses all relevant changes and addresses the reason the council requested it. Consistency across the application is often more valuable than adding another generic appendix.
A well-prepared report can help the authority understand the proposal. It cannot guarantee validation, approval or a particular decision date.
Get the right heritage evidence for your application
If the council has requested a heritage statement for an unlisted property, the priority is to understand the specific concern and provide a focused response.
AMS SURVEYS prepares heritage statements and impact assessments informed by building surveying and conservation knowledge. We welcome enquiries across Liverpool and Merseyside, Greater Manchester, Cheshire, Lancashire, North Wales, Leeds, Sheffield, Stoke and wider England and Wales.
Contact AMS SURVEYS with the council's request and your drawings. Call 0151 314 6650 or email contact@amssurveys.co.uk so we can advise on the appropriate scope before further design work or submission.
