Who can prepare a heritage statement and when more is needed

No statute says who may write a heritage statement. There is no register, no licence and no protected title, and for a straightforward job on an unlisted building in a conservation area an owner who does the research properly can produce something a case officer will accept.

What the statement must do is fixed, though. National policy requires an applicant to describe the significance of any heritage asset affected, including any contribution made by its setting, in a level of detail proportionate to the asset's importance and no more than is sufficient to understand the potential effect of the proposal. That proportionality test is what decides whether you need a specialist, and it is a test about the asset rather than about the size of the works.

What the statement has to establish

Three things, in this order.

First, what the asset is and what makes it significant. Significance in heritage terms is made up of archaeological, architectural, artistic and historic interest, and the statement should say which of those apply and why, with evidence rather than adjectives.

Second, how the proposal affects that significance. Not the building, the significance. Removing a modern partition from a listed house affects the fabric and may not affect significance at all. Replacing a historic staircase does the opposite.

Third, where harm arises, the justification and the mitigation. The statutory duties in the Planning (Listed Buildings and Conservation Areas) Act 1990 require decision makers to have special regard to preserving a listed building and its setting, and special attention to preserving or enhancing the character or appearance of a conservation area. Those duties sit above the policy tests, and a statement that does not engage with them is answering the wrong question.

A Heritage Statement that walks through those three steps in order, with sources cited, is worth more than one that describes the building at length and concludes that the proposals are sympathetic.

Where an owner can reasonably write it

For a rear extension to an unlisted house in a conservation area, or a replacement window on a building that makes a neutral contribution, an owner can usually do this well. The research is public and the analysis is within reach.

Start with the National Heritage List for England entry if there is one, then the conservation area appraisal and management plan published by the council, then historic mapping, then the Historic Environment Record held by the county archaeologist. Take dated photographs of the building and its context, including views along the street in both directions.

Then write plainly: what the building is, when it was built, what has changed since, what contributes to the character of the area, what the proposal does, and why the effect is acceptable. Two thousand words of well sourced description beats eight thousand of narrative.

Historic England publishes advice on preparing statements of heritage significance and on assessing the setting of heritage assets, and both are free and written for practitioners rather than academics. Read them before you start rather than after the council asks for more information.

When the council will expect a specialist

Four situations shift the expectation.

• The asset is listed at grade I or II star, or is a scheduled monument
• The proposal involves demolition, substantial alteration of historic fabric, or works to an asset on a heritage at risk register
• Harm is likely and the case turns on the balance between harm and public benefits
• The asset's significance is contested, for example where the council and the applicant disagree about whether a building is curtilage listed

In those cases a conservation accredited author carries weight. The recognised routes are the Institute of Historic Building Conservation, the RIBA conservation registers, the register of Architects Accredited in Building Conservation, and the RICS building conservation accreditation. None of them is legally required. All of them tell a conservation officer that the person who wrote the analysis has done it before.

Cost is a real consideration and the honest answer is that on a marginal case the specialist fee is small against the cost of a refusal and a resubmission. On a simple case it is money spent on reassurance.

Where the work becomes a different discipline

Two documents are frequently confused with a heritage statement and are separate pieces of work requiring different skills.

Historic Building Recording is a measured and photographic record made to one of the Historic England levels, from a basic visual record at level 1 to a full analytical record at level 4. It is usually secured by condition where a building or part of it will be lost, and it is produced by someone with buildings archaeology experience. Councils normally expect a suitably qualified author, and professional involvement is strongly advised.

An Archaeological Desk-Based Assessment deals with buried archaeology rather than standing fabric, follows the standards published by the Chartered Institute for Archaeologists, and is what the county archaeologist will ask for on a site within an area of archaeological interest. It is also a job for a suitably qualified author.

If your council's validation checklist asks for a heritage statement and the county archaeologist separately asks for an assessment, they are asking for two documents, not one.

Working with the conservation officer

Conservation officers are usually the most willing consultees in the building, partly because they are asked for advice less often than they should be.

Ask for a pre-application meeting on site rather than a written response. Bring the significance analysis and a sketch, not a finished design. The conversation you want is about which elements of the building matter and which do not, and that conversation is far more productive before the drawings are finalised.

Where a council charges for pre-application advice on listed buildings, the fee is published and is almost always worth paying. Where the council has no conservation officer, and a number do not, the county or a neighbouring authority may provide the service, and Historic England is a statutory consultee on certain categories of listed building consent.

What strengthens a modest statement

Evidence, mostly. A sequence of historic maps showing when the outbuilding appeared. A photograph from the archive showing the original fenestration. A list entry quoted accurately with its date and reference number. A note of the conservation area appraisal's own description of the street.

And restraint in the conclusion. A statement that concedes minor harm and explains why it is outweighed reads as professional. A statement that claims no harm at all where a Victorian window is being replaced reads as advocacy, and it invites the officer to reach the opposite view.

Where a draft is prepared with software assistance, it still needs a person who understands the building to check the significance analysis against what is actually there. Reviewers who take on that work can be found through the professional directory, and the report types that flag professional input are listed on the planning documents index.

For specialist technical reports, qualified professional input may be required. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.