Answering a heritage harm refusal with public benefits

A refusal on heritage grounds is answered in two moves. First, agree or contest the harm category honestly, because an appeal that argues there is no harm when an inspector can see some loses the rest of its credibility. Second, identify the public benefits, show how each one is secured, and set them against the harm with the statutory duties applied in the right order.

The order is the part consultants get wrong. Sections 16 and 66 of the Planning (Listed Buildings and Conservation Areas) Act 1990 require special regard to the desirability of preserving a listed building, its setting and features of special interest, and section 72 requires special attention to the character and appearance of a conservation area. The Court of Appeal in Barnwell Manor held that this means considerable importance and weight is given to heritage harm, so the benefits do not enter a neutral balance. They enter a balance already tilted against the scheme.

What a heritage refusal reason alleges

Read the refusal notice for three things. The designated asset or assets engaged, including setting. The harm category the authority has reached, whether substantial or less than substantial. And whether the authority says the benefits are insufficient, or says there are no public benefits at all.

Those produce different appeals. A dispute about category is a significance argument supported by documentary and fabric evidence. A dispute about sufficiency is a benefits argument supported by delivery evidence and obligations.

Where the notice is silent on category, press the authority to state it in the appeal questionnaire. Substantial harm engages a much stricter test, and an authority that has not committed to a category sometimes argues for the stricter one late.

Reaching an honest harm category

Substantial harm is a high bar. It is harm that drains away or vitiates a large part of the asset's significance, and it is rarely reached by anything short of demolition or a change that undermines the reason for designation. Less than substantial harm covers a wide range, from barely perceptible to serious, and the weight given to it should reflect where on that range the proposal sits.

So do not stop at the label. An appeal statement that says the harm is less than substantial and moves on has thrown away the chance to say it is at the lower end of that range, which is where most benefits arguments are won.

The evidence that places harm on the range is specific:

• a statement of significance identifying the heritage values present and which are affected
• the fabric evidence, from a condition survey or opening up, where loss of historic material is at issue
• views analysis where setting is the issue, taken from the vantage points the designation record relies on
• the planning history of comparable alterations to the same asset or group

Historic England's guidance on setting and on statements of heritage significance sets out the method, and a Heritage Statement structured to it gives the inspector the framework they expect.

Benefits that count as public

The Planning Practice Guidance on the historic environment is clear that a public benefit should be of a nature or scale that benefits the public at large, rather than a private benefit to the applicant. That filter removes a lot of what appears in appeal statements.

Benefits that routinely carry weight:

1. Securing the long-term future of the asset itself, including repairs to elements at risk
2. Removal of unsympathetic later additions or reinstatement of lost historic features
3. Public access to a building or space that has none, secured by obligation
4. Housing delivery, which carries more weight where the authority cannot demonstrate a five-year supply
5. Recorded information gained through archaeological or building recording, where loss is unavoidable
6. Environmental improvement such as decontamination, flood betterment or biodiversity gain above the statutory minimum

Benefits that carry little: the applicant's return, the fact that the building is currently empty by choice, construction jobs on a small scheme, and improvements the authority could require anyway.

And quantify where you can. Housing numbers, square metres of floorspace brought back into use, metres of boundary wall repaired, hours of public access a year. Unquantified benefits are easy for an inspector to describe as limited.

Securing each benefit by condition or obligation

A benefit that is not secured is a promise. Inspectors discount promises, so go through the list and attach a mechanism to each.

Repairs to the listed fabric belong in a condition tying them to a phase of the development, or in a section 106 obligation where they fall on land outside the application site. Public access needs an obligation with hours, a management plan and a term. Reinstatement of lost features needs a schedule of works and a condition requiring completion before occupation of the new element.

Put the draft heads of terms in the appeal documents rather than offering to discuss them. An appeal where the obligation arrives in the final week, or not at all, invites a decision that gives the benefit reduced weight for uncertainty.

Optimum viable use and the evidence for it

Where the argument is that the asset cannot be sustained in its current use, the Framework's concept of the optimum viable use becomes relevant. That is the use that causes the least harm to significance while being viable, and it is not simply the most profitable use.

The evidence has to do three things. Show the current use is not viable, with costed repair liabilities and an income appraisal. Show which alternative uses were tested, including lower-value ones that would cause less harm. And show why the proposed use is the least harmful of the viable options.

Marketing evidence is usually required where redundancy is claimed: a reasonable period at a realistic price with a specification of how the asset was marketed. A six-week listing at an optimistic figure will not satisfy an inspector. Where viability is contested, the appraisal sits inside a Viability Assessment prepared by a chartered surveyor who will stand behind the figures.

Enabling development arguments

Enabling development, where harmful development funds the conservation of a heritage asset, is treated with care because it can be used to justify almost anything. The tests applied in practice ask whether the conservation deficit is real and quantified, whether the enabling development is the minimum necessary to meet it, whether the funds are tied to the works, and whether the public benefit of securing the asset outweighs the harm the enabling development causes.

Each of those needs documents: a costed schedule of conservation works, an open-book appraisal showing the deficit, a scheme tested at smaller scales to show the quantum is the minimum, and an obligation linking receipts to the works with a clawback.

Presenting the balance on appeal

Write the balance as a structured section rather than a narrative. State the asset and its significance. State the harm, its category and its position on the range. List each benefit, its weight and how it is secured. Then apply the statutory duties and the Framework test explicitly, in that order, and reach the conclusion.

Cite the Framework by edition. The current edition was published on 17 August 2026 and organises policy by code rather than paragraph number, and older paragraph references from a previous edition in an appeal statement are the kind of error that gets picked up.

One honest limitation: heritage balances are judgements, and two inspectors can weigh the same benefits differently. What improves the odds is specificity and security, not volume.

A Planning Statement drafted on PlanScope can carry the balance section with the statutory duties, harm category and benefits schedule separated out, leaving the significance assessment to a heritage specialist. For the broader discipline of converting a refusal into a strategy, see reading a refusal notice and turning it into a plan, and for the other side of the counter, what objectors can do once a planning appeal starts. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.

This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it.