Appealing a refusal based on heritage harm
Heritage appeals turn on the balancing exercise, not on denying harm. This sets out how to assess significance, categorise harm honestly and evidence public benefits an inspector can test.
An appeal against refusal on heritage harm grounds is won or lost on the balancing exercise, not on whether harm exists. Inspectors almost never accept that a scheme affecting a designated asset causes no harm at all, and a case built on that claim reads as special pleading. The stronger heritage harm appeal concedes the category of harm precisely, then demonstrates that the statutory duty has been performed and that the public benefits outweigh the harm once great weight has been given to conservation. Get that structure right and the rest is evidence.
The statutory duties and the weight they carry
Three duties sit above national policy and cannot be balanced away. Section 66(1) of the Planning (Listed Buildings and Conservation Areas) Act 1990 requires the decision-maker, when considering development that affects a listed building or its setting, to have special regard to the desirability of preserving the building, its setting and any features of special architectural or historic interest. Section 72(1) requires special attention to the desirability of preserving or enhancing the character or appearance of a conservation area. Section 16(2) applies the same special regard to listed building consent itself.
The Court of Appeal in East Northamptonshire District Council v Secretary of State, the Barnwell Manor case, held that those duties require considerable importance and weight to be given to the desirability of preserving the asset, which creates a strong presumption against granting permission where harm is found. Mordue v Secretary of State then confirmed that a decision-maker who works properly through the national heritage policy tests will normally have discharged the section 66 duty at the same time.
That pairing shapes the appeal. You are not arguing that the duty is satisfied instead of the policy test. You are showing the inspector a route through the policy test that also, visibly, performs the duty.
Cite the heritage policies of the current National Planning Policy Framework by the policy code used in the edition published on 17 August 2026, and check the wording on gov.uk as you write. The Framework was renumbered in December 2024 and then re-issued with policy-coded chapters, so any paragraph number carried over from an older statement of case will be wrong.
Significance first, harm second
A refusal reason that asserts harm without analysing significance is vulnerable, and so is an appeal statement that does the same in reverse. Start with the asset, not the scheme.
Set out what the asset is, why it is designated, and which parts of it carry the interest. For a listed building that means the architectural and historic interest recorded in the list entry and, more usefully, the interest an assessment on site actually finds, since list descriptions are identification aids and not a statement of everything that matters. For a conservation area it means the appraisal, if one exists, and the elements the appraisal identifies as positive contributors.
Then separate the attributes that contribute to significance from those that do not. A twentieth century flat roofed extension on the rear of a Georgian terrace usually contributes nothing, and demolishing it is not harm. Saying so plainly, with evidence, earns credibility for the parts of the case where you do concede harm.
Setting deserves its own paragraph. Historic England's advice on the setting of heritage assets asks how the surroundings contribute to significance and how a proposal changes the experience of the asset, which is a different question from whether the proposal is visible from it. Intervisibility on its own is neither harm nor its absence.
Categorising harm without overselling the case
National heritage policy splits harm into substantial and less than substantial, and the consequences differ sharply. Substantial harm or total loss engages a much narrower test, so the category you argue for matters more than the adjectives you attach to it.
Two habits lose appeals. The first is claiming no harm where an officer, a conservation officer and an amenity society have all identified some. The second is accepting a vague "harm" without placing it on the spectrum, which lets the inspector place it higher than the evidence requires. Argue for a position inside less than substantial harm and say where inside it: at the lower end, the middle, or approaching the substantial threshold.
Be careful with the word substantial. It carries a demanding meaning in this context and applies where the harm drains away a very large proportion of the asset's significance. An inspector who thinks you have inflated or deflated the category will discount the rest of your analysis.
Deciding whether the reason for refusal is worth contesting at all comes before any of this. The questions in deciding whether a refusal reason is worth appealing apply with particular force to heritage, because a scheme can often be redesigned faster than an appeal can be determined.
The balance and what counts as a public benefit
Once harm is identified, great weight attaches to the conservation of the asset, and the harm has to be weighed against public benefits. Public benefit is a wider idea than developer benefit, but it is not unlimited.
Benefits that inspectors have treated as real include securing the optimum viable use of a building at risk, funding repairs that address decay, restoring a lost architectural feature, removing a harmful later addition, delivering housing where the authority cannot demonstrate a five year supply, providing public access or interpretation, and improving the setting of an adjacent asset. Benefits that carry little weight include the applicant's own profit, the avoidance of inconvenience, and improvements that the owner would be obliged to carry out anyway.
Quantify what you can. A repair schedule with a specification and a programme is a benefit an inspector can test. An assertion that the scheme will bring the building back into use is not, unless the viability evidence sits behind it.
| Position in the case | What the inspector expects to see |
|---|---|
| Significance | A written assessment of the asset, its designation and its contributing attributes |
| Harm | A category, a location on the spectrum and the reasoning for both |
| Weight | Express acknowledgement that great weight applies to conservation |
| Benefits | Specific, evidenced, and separated from private gain |
| Conclusion | The balance performed in the round, with the statutory duty referenced |
Where an inspector will not be moved
Some heritage appeals are not winnable on their facts, and recognising them saves twelve weeks and a fee.
Total loss of a listed building with no viability evidence is one. So is a scheme whose harm stems from the quantum of development rather than its detailing, because conditions cannot fix massing. Uniform fenestration replacement on a terrace with surviving historic joinery rarely survives, and neither does a case that rests on other recent approvals in the area without showing that the assets and the harm were comparable. Appeal decisions are indicative of how inspectors have approached an issue rather than binding, and using appeal decisions as evidence in an application works best when the asset, the designation and the category of harm really do match.
The honest uncertainty in this area is the weight given to cumulative erosion in conservation areas. Inspectors treat incremental change inconsistently, and a small alteration that would pass in isolation is sometimes refused on the basis that it is the tenth of its kind. There is no reliable way to predict which way that goes.
Evidence from a heritage specialist
A heritage statement written by someone with recognised heritage competence carries more weight at appeal than one written by the applicant, and an inspector will notice the difference in how significance is described. A Heritage Statement needs to do three things: assess significance, assess the effect of the proposal on that significance, and explain how harm has been avoided, minimised or mitigated in the design.
Where the asset is buried rather than built, an Archaeological Desk-Based Assessment against the Chartered Institute for Archaeologists standards covers the historic environment record, cartographic evidence and the potential for below ground remains. Where fabric will be lost, Historic England recording levels 1 to 4 define what a written and drawn record should contain, and the level should be agreed with the authority rather than assumed.
PlanScope produces AI-assisted drafts of these documents, structured to UK planning policy and citing the framework and local plan policies it relies on, with missing site facts flagged rather than invented. Those drafts are a starting point for a heritage specialist, not a replacement for one. Reports should be reviewed before submission, and PlanScope does not guarantee planning approval.
Conditions that narrow the dispute
Offering conditions before the inspector asks removes arguments from the other side of the table. The ones that work on heritage appeals tend to be specific: sample panels of brickwork and mortar approved before construction, joinery profiles at a stated scale, a schedule of repairs tied to a programme, removal of a modern addition secured as part of the same permission, and a watching brief where below ground remains are possible.
Conditions cannot rescue a scheme whose harm comes from its scale, and offering twenty of them signals that the design has not resolved the issue. Keep them few, keep them enforceable, and set them out in your statement of case rather than raising them for the first time at a hearing.
Appeals against refusal of planning permission are made under section 78 of the Town and Country Planning Act 1990, normally within six months of the decision, reduced to twelve weeks for householder applications, while refusal of listed building consent is appealed under section 20 of the Listed Buildings Act. Check the current deadline on the appeal service before you diarise it.
This is general guidance, not legal advice. Take advice on your own appeal from a qualified professional before relying on it.
Frequently asked questions
Should I argue that my scheme causes no heritage harm at all?
Only where the evidence supports it, for example where the affected fabric is a modern addition that contributes nothing to significance. Where a conservation officer has identified harm, a blanket denial tends to cost credibility across the whole statement. A precise concession at the lower end of less than substantial harm usually gives you a stronger platform for the balance.
What does great weight mean in practice at appeal?
It means the inspector starts from a strong presumption against harming a designated asset, following the Barnwell Manor judgment on the sections 66 and 72 duties. Benefits then have to be substantial enough to outweigh that starting point. Writing the balance as if harm and benefit begin level is one of the commonest drafting errors in heritage appeal statements.
How long do I have to appeal a heritage refusal?
Appeals under section 78 of the Town and Country Planning Act 1990 are normally made within six months of the decision date, reduced to twelve weeks for householder applications. Refusal of listed building consent is appealed under section 20 of the Planning (Listed Buildings and Conservation Areas) Act 1990. Confirm the current deadline on the appeal service before relying on it.
Do I need a heritage consultant for the appeal?
Councils and inspectors give more weight to a significance assessment written by someone with recognised heritage competence, and the difference shows in how the asset is described. For listed building consent appeals and for any case involving loss of historic fabric, professional input is strongly advised. An AI-assisted draft can carry the structure while the specialist supplies the judgement.
Can planning conditions fix a heritage objection?
Conditions work where the harm is in detailing, so sample panels, joinery profiles, repair schedules and archaeological watching briefs all help. They do not work where harm comes from the scale or quantum of development, because no condition reduces massing. Offering a long list of conditions tends to signal that the design itself has not resolved the issue.
How useful are other appeal decisions as evidence?
They are indicative of how inspectors have approached a similar issue rather than binding precedent, and they help most when the designation, the asset type and the category of harm match your case closely. A decision about a Grade II farmhouse says little about a Grade I church. Attach the decision letter and explain the comparison rather than citing a reference number.
Sources and further reading
This article is general guidance about the planning system in England and, where stated, the rest of the UK. It is not legal or professional advice. Check your local planning authority’s validation requirements and take professional advice for your specific site.