Non-designated heritage assets and the balanced judgement
A locally listed building carries no statutory protection, and that surprises people on both sides of the counter. What it does carry is a balanced judgement, which is a different argument entirely.
A non-designated heritage asset is a building, monument, site, place or landscape that a local planning authority considers to have heritage significance, without being listed, scheduled or otherwise designated nationally. National policy handles it with a single sentence that decides most of these cases: in weighing applications that affect a non-designated heritage asset, a balanced judgement is required, having regard to the scale of any harm or loss and to the significance of the asset.
That is a materially different test from the one applied to a listed building, and the difference is worth understanding before writing a word of justification.
How buildings get onto a local list
Most authorities maintain a local list, compiled against published selection criteria and usually subject to public nomination and a review panel.
Criteria vary between councils and tend to cover the same ground: age and rarity, architectural interest, group value, association with a person or event of local importance, landmark quality, and social or communal value. A former co-operative store, a Victorian board school, a tannery chimney, a 1930s cinema frontage. These are buildings that matter locally without ever reaching the threshold for national listing.
Getting onto the list is not a technical exercise with a right answer. It is a judgement made against criteria, and the reasoning is usually published in a short entry. Read that entry before designing anything, because it tells you exactly which parts of the building the conservation officer thinks carry the interest.
Why the policy weight is different
Listed buildings and conservation areas carry statutory duties. The decision maker must have special regard to preserving a listed building, its setting and its features of special interest, and must pay special attention to preserving or enhancing the character or appearance of a conservation area. Those duties come from the Planning (Listed Buildings and Conservation Areas) Act 1990 and the courts have given them considerable force.
None of that applies to a non-designated heritage asset. There is no separate consent regime, no statutory duty, and no requirement to give great weight to conservation.
What there is instead is a balanced judgement. The scale of harm or loss goes on one side, the significance of the asset on the other, and the planning balance is struck in the ordinary way alongside every other material consideration. In practice this means an argument about a non-designated asset is won on evidence about significance and on the quality of the design response, rather than on policy tests. Compare that with the analysis needed for like-for-like repairs to a listed building, where the statutory duty and a separate consent both bite.
What the balanced judgement looks like in practice
Officers apply it by asking three questions in sequence, and a submission that answers them in the same order reads well.
- What is the significance of the asset, described in heritage terms rather than by age alone.
- What harm does the proposal cause to that significance, described specifically and quantified where possible.
- Does the benefit of the proposal outweigh that harm.
The third question is where non-designated cases differ most from designated ones. Ordinary planning benefits can outweigh harm here. Bringing a vacant building back into use, delivering housing, improving an unattractive frontage, removing a poor later addition: these are capable of tipping the balance.
An illustrative example. A locally listed former chapel with a later flat-roofed side extension. The proposal removed the extension, restored the original opening behind it, and inserted a contemporary glazed link at the rear. The harm from the new link was real and modest. The benefit to the significance of the original building was greater, and the officer's report said so in two paragraphs.
Assets identified during the application
This is the situation architects find most frustrating. A building that appears on no list is identified as a non-designated heritage asset while the application is being determined, and the assessment changes halfway through.
National policy allows it, because non-designated heritage assets include those identified during plan-making or decision-making. Historic environment records, conservation area appraisals and character assessments all feed into the judgement.
Reduce the risk by looking for the signals before submission: a building shown on the first edition Ordnance Survey mapping, an entry in the historic environment record, a mention in a conservation area appraisal, a nomination that was made but never determined. Where the risk is real, commission the significance assessment early rather than reacting to an objection. A Heritage Statement submitted with the application is worth considerably more than one produced in week seven.
Evidence that supports or challenges the identification
Two arguments are available and they are not equally strong.
The first is that the building is not a heritage asset, or has less significance than the council believes. This works where you can bring real evidence: dating that shows the fabric is later than assumed, historic mapping showing the building is a rebuild, or a fabric analysis demonstrating that the features carrying the claimed interest are modern replacements. It fails where it is simply assertion about condition or viability.
The second is that the harm is smaller than claimed, or is outweighed. This is usually the better argument, and it is the one the policy invites. Describe significance generously, then show that the proposal engages with it.
Where the building is being altered rather than lost, the Design and Access Statement carries much of this work, because the design response and the heritage argument are the same argument told twice.
Design responses that keep the case simple
Certain moves consistently reduce the temperature on non-designated asset cases.
- Retain the principal elevation and the roof form that give the building its local presence
- Put the new work where the building has already been altered, usually the rear or the flank
- Keep the historic plan form legible even where rooms are combined
- Repair rather than replace the features the local list entry names
- Avoid removing chimney stacks, which read as loss out of proportion to their floor area
None of this requires a conservation-led scheme. It requires the design to acknowledge which parts of the building the significance actually sits in, which is why the significance assessment needs to happen before the layout is fixed rather than after.
Recording before demolition
Where loss is accepted, national policy expects the developer to record and advance understanding of the significance of the asset before it goes, and to make that evidence publicly available.
For a non-designated asset this is usually a written and photographic record at a proportionate level, deposited with the local historic environment record. Historic England's guidance on recording historic buildings sets out four levels of detail, and a level 2 or level 3 record covers most cases. Councils secure it by condition, typically requiring the record to be completed and deposited before demolition begins.
Price it at the outset. The cost of a historic building recording exercise is modest against a demolition contract and it is a standard condition rather than something to negotiate away. What does cost money is discovering the requirement after the scaffolding is up.
This is general guidance, not legal advice; check the position with your local planning authority or a qualified professional before relying on it.
To see which heritage documents a proposal is likely to need, check the site on PlanScope using its postcode.
PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.
Frequently asked questions
Does a locally listed building have legal protection?
Not in the sense that a listed building does. Local listing does not create a separate consent regime and does not attach the statutory duties that apply to listed buildings and conservation areas. It identifies the building as a non-designated heritage asset, which makes its significance a material consideration that has to be weighed when an application is determined.
Can a council treat a building as a heritage asset if it is not on the local list?
Yes. National policy allows non-designated heritage assets to be identified during the decision making process, so a building recorded in the historic environment record, or recognised by the conservation officer during the application, can be treated as one. This happens most often where an application proposes demolition of an older building in a settlement core.
What is the difference between the balanced judgement and the harm tests?
For designated assets, national policy requires great weight to be given to conservation and sets out tests for substantial and less than substantial harm against public benefits. For non-designated assets the decision maker makes a balanced judgement having regard to the scale of harm or loss and the significance of the asset. There is no presumption and no separate statutory duty.
Can a non-designated heritage asset be demolished?
It can, where the balanced judgement comes out that way, and demolition proposals are the cases where these assets receive the closest attention. Permission is usually needed for demolition of a building of any size in a conservation area, and outside one the prior approval procedure may apply. Recording before loss is commonly required by condition.
How do I challenge a local list designation?
Address the council's own published selection criteria and show, with evidence, that the building does not meet them. Historic mapping, deeds, building fabric analysis and dating evidence carry weight. Assertion does not. Most authorities have a procedure for review, and the argument is far more effective before an application is submitted than during it.
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.