AI and Planning

Where site judgement cannot be drafted in a design statement

7 min readBy PlanScope Editorial Team

A draft can carry the structure, the policy references and the checklist. Context, character and the access arrangements that depend on levels come from looking.

Design and access statement site judgement is the part of the document that cannot be produced from a postcode, a policy map and a set of drawings. A structured draft will give you a sound skeleton: the sections the procedure order expects, the policies that apply, the constraints the data shows and a checklist of what still needs answering. What it cannot give you is what the street actually looks like on a wet Tuesday, which is the material the statement is supposed to be built from.

Knowing which is which makes both halves of the job faster.

What a design and access statement is for

The requirement is procedural. A Design and Access Statement is required for major development and for most development in a conservation area or World Heritage Site, and for listed building consent applications, under the Development Management Procedure Order.

Its content requirement is specific: explain the design principles and concepts applied, how the amount, layout, scale, landscaping and appearance of the development have been dealt with, how the context of the site and its surroundings has been taken into account, what consultation was carried out and how the outcome influenced the scheme, and how issues relating to access have been addressed.

Read that list closely and most of it is an account of decisions. A statement that describes the scheme without explaining why it takes the form it does has answered the wrong question, which is the single most common weakness across the ones officers read.

Context analysis as an act of looking

The context section is where the difference shows.

Constraint data tells you what is designated. It tells you there is a conservation area boundary, a listed building 40 metres away, a tree preservation order on the corner and a flood zone at the bottom of the garden. All of that is useful and all of it can be assembled before anyone visits. Tools that do this well save real time, and the approach behind building a constraints plan before the design starts is the right starting point.

What data does not tell you is which of those things matters. Whether the listed building is visible from the site. Whether the conservation area boundary corresponds to any actual change in character on the ground, which it often does not. Whether the protected tree is the one that defines the street or a self-seeded sycamore behind a garage.

That judgement comes from standing there, photographing the approaches in both directions, and walking the street to the point where the site stops being visible. The photographs then belong in the statement, with the viewpoint marked on a plan.

Judgements about prevailing character

Prevailing character is a phrase that appears in almost every local plan and means something different in every street.

The components are observable and measurable: the building line and how consistently it is held, plot width and the rhythm it creates, the ratio of building to gap, storey heights and eaves heights, roof form and orientation, the proportion of window to wall, boundary treatments, and what happens at corners. A statement that records those with numbers has an argument. One that says the area is characterised by traditional two storey dwellings has a sentence.

The harder judgement is which departures the street already tolerates. Almost every residential area contains something that breaks the pattern, and whether that is an anomaly to be ignored or a precedent to be relied on is a call that needs looking at the thing and forming a view. Officers make that judgement too, and a statement that engages with it directly reads as the work of someone who went.

Take the photographs in the season you are applying in. A summer photograph of a screened boundary supporting a scheme determined in January invites the obvious question.

Access arrangements that depend on levels

Access is where assumptions become expensive.

A level change of a few hundred millimetres across a frontage decides whether a level threshold is achievable, whether a ramp fits within the plot, what gradient the driveway runs at and whether a visibility splay can be achieved without cutting into a bank. None of that is visible on a plan without levels, and a topographical survey is the least expensive risk reduction available on a constrained site.

The same applies to the approach. Is there a dropped kerb, and does it line up. What is the footway width and is it obstructed by a pole or a tree. Where does surface water currently run, and what happens to it if the levels change. Is there a step at the existing entrance that has been drawn as level.

Access in the statement also covers movement within and around the development, inclusive design and how the scheme works for people with reduced mobility. Those sections are weak when written generically and strong when they refer to the actual gradients and dimensions on the survey.

Materials chosen against what is actually there

Materials sections fail in a recognisable way: a palette described in general terms, red brick, slate roof, timber windows, that could be written about half the country.

What makes the section work is specificity against the actual context. Which brick, in what bond, with what mortar colour and joint profile, matching which building, seen where. Whether the existing slates are natural or manufactured, and what size. How the neighbouring brickwork has weathered and whether a new brick should be chosen to match the original colour or the weathered one. Whether the street's windows are painted timber, and what the prevailing glazing pattern is.

Photograph the reference buildings and put the photographs in the statement next to the proposed palette. On a scheme in a conservation area that page does more work than several paragraphs of policy compliance.

Where a draft can carry the structure

Plenty of the document is legitimate drafting territory, and pretending otherwise wastes time.

  • The section structure the procedure order expects, in the right order.
  • The policy framework: which development plan policies apply, with the plan named and dated, and the national framework edition stated.
  • The factual site description drawn from the drawings and the constraint data.
  • The consultation account, from the record of what was done.
  • The checklist of matters the statement has to address, so nothing is left out.
  • A first pass at the access narrative, structured for the survey data to be dropped into.

Used that way, a draft is a scaffold. The value is that the planner spends their time on the judgements instead of on the section headings, which is exactly the argument for drafting a design and access statement an officer can use.

PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval. Drafts of this kind insert a clear flag where a site-specific fact is missing rather than inventing one, which is the behaviour you want, and every flag has to be resolved before submission.

Editing for a design that has been thought about

The final pass is not proofreading. Read the statement as an officer who has visited the site and ask whether it demonstrates that you did too.

Check that every general claim about character is supported by an observation or a measurement. Check that each photograph has a marked viewpoint. Check that the access section refers to real levels. Check that the materials section names specific references. Check that every placeholder is gone. And check that the statement explains a decision at each of the five headings the order lists, rather than describing the outcome.

One honest test: delete the site address from the statement and read it again. If it could be about a different site, it needs another afternoon. The factual errors that survive to submission follow a pattern, and knowing what factual errors to look for in a drafted planning document makes that final pass quicker.

This is general guidance rather than legal advice, so check validation requirements with your local planning authority before relying on it.

Frequently asked questions

When is a design and access statement required?

For major development, for most development in a conservation area or World Heritage Site, and for listed building consent applications, under the Development Management Procedure Order. Some authorities ask for one on smaller applications through their local validation list, so check the council's published requirements before deciding it is unnecessary.

What can a drafting tool legitimately produce?

The section structure, the policy framework with the plan named and dated, the factual site description from the drawings and constraint data, the consultation account from your records, and a checklist of matters to address. It gives you a scaffold so that your time goes on judgements rather than on headings.

Why do officers criticise context sections so often?

Because most describe designations rather than character. Constraint data shows what is designated, not which of those things matters on the ground. A section that records building line, plot rhythm, storey and eaves heights, roof form and boundary treatments, with photographs and marked viewpoints, reads completely differently from one listing designations.

Do I really need a topographical survey?

On any site with a level change, yes, and it is the least expensive risk reduction available. Levels decide whether a level threshold works, whether a ramp fits, what gradient the drive runs at and whether a visibility splay is achievable. Access sections written without survey data tend to be contradicted at the technical stage.

How do I know if the statement is good enough?

Delete the site address and read it again. If it could describe a different site, it needs more work. Then check that every claim about character rests on an observation or measurement, that photographs have marked viewpoints, that the access narrative uses real levels, and that the materials section names specific reference buildings.

Sources and further reading

design and access statementsite analysisai and planningarchitectscontext

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.

More in AI and Planning

View all →
AI and Planning6 min read

Explaining an AI-assisted draft to a client or a committee

Sooner or later a client, an officer or an objector asks how a document was produced. A planner who has thought about the answer in advance gives a better one.

Read article →
AI and Planning7 min read

Why planning applications are returned as invalid

Validation is a completeness check against the national requirements and the council's own local list. Here are the defects that cause a return and how to deal with an invalidity notice.

Read article →
AI and Planning7 min read

Drafting to an appeal deadline without cutting corners

Appeal timetables do not move, and a statement of case submitted late is normally returned unread. Here is where drafting buys time and where only evidence will do.

Read article →
AI and Planning7 min read

Version control when report sections are regenerated

A report assembled from independently produced sections is only consistent if somebody checks it after the last edit. The dependencies that break, and the controls that catch them.

Read article →
AI and Planning7 min read

What AI drafts get right, and wrong, in planning reports

A drafting tool knows what a Transport Statement contains. It does not know what the traffic count said. Where the real review time goes on an AI-assisted planning document.

Read article →
AI and Planning7 min read

Using drafted documents to discharge planning conditions

Conditions asking for details, samples and schemes need different submissions. Where AI-assisted drafting helps, where a licensed professional is legally required, and what causes refusals.

Read article →