Can AI Draft a Design and Access Statement? What the Architect Checks

Yes, AI can draft a design and access statement for a small planning application, and it is a good use of an afternoon. The architect must still check that the application needs one, that the facts match the drawings, that every policy reference exists in the current plan, and that the access section describes the actual site.

The checks matter more than the drafting, because they decide whether an AI draft helps or harms the application. A statement that reads smoothly and cites policy HC4 from a plan that never had one is worse than a short, plain statement written by hand. Planning officers see many statements. The generic ones are easy to spot: they praise "high-quality design" without saying which wall is brick, which window is moving and why.

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So the method is: confirm the requirement, gather the facts, let the assistant write to a fixed outline, then run seven checks. For where the statement sits among the other planning documents AI can touch, see where architects should draw the line with AI on planning applications.

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Check 1: does the application need a statement at all

Start here, because an unrequired statement is wasted effort and a missing required one stops the application being validated. Government planning guidance says a design and access statement accompanies certain applications. The categories it lists are:

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• applications for major development;
• applications in a designated area, meaning a World Heritage Site or a conservation area, where the proposal is one or more dwellings or a building or buildings with a floor space of 100 square metres or more;
• applications for listed building consent.

The same guidance says applications for waste development, material change of use, engineering or mining operations, and applications to amend conditions do not need one. A modest householder extension in a conservation area may therefore not need a statement at all, unless it is over the size threshold or the planning authority's local list asks for one. Ask the assistant to summarise these categories from the guidance text you paste in, then check your authority's own validation checklist. Never take the answer from memory, because the rules and the threshold wording vary by place and change over time.

Check 2: the seven headings the statement answers

The statutory requirement is that the statement explains the design principles and concepts applied, and shows how the context was appraised and taken into account. It must also cover access: the applicant's approach, how relevant local plan policies were considered, any consultation on access and how it shaped the scheme. The familiar way to structure a short statement is by seven headings: use, amount, layout, scale, landscaping, appearance and access. They are a convention, not a legal list, but they are a useful frame for an assistant. Ask for one short paragraph under each heading and no more.

The brief you give the assistant

The quality of the draft depends on the facts you supply. Use a short fact sheet, not the whole drawing set, and tell the model to stay inside it.

Write a design and access statement of no more than 700 words for a small planning application. I am the architect and will check every statement against the drawings.

Facts (use only these):
- Site: garden plot beside [number] [street], within a conservation area
- Proposal: one two-bedroom dwelling, 78 m2 gross internal area, two storeys, ridge 7.2 m
- Materials: facing brick to match neighbours, slate-effect roof, timber windows
- Neighbours: two-storey terrace, ridge about 7.6 m; eaves aligned with the terrace
- Trees: one apple tree retained at the rear; new hedge to the street boundary
- Access: level entrance from the pavement, one parking space, step-free route to the front door
- Policy extracts: [paste the policy text you have downloaded; do not use any other policies]

Structure: Use, Amount, Layout, Scale, Landscaping, Appearance, Access. One paragraph each.
Rules: do not invent policy numbers, distances or materials. Where a fact is missing, write [ARCHITECT TO CONFIRM]. After the statement, list every sentence that relies on a policy, a figure or a claim about the surroundings.

That last instruction gives you the checklist for the rest of the review. It also forces the model to show its working, which makes unsupported lines easy to find.

A two-bedroom infill dwelling in a conservation area

Say a small practice is applying for a two-bedroom dwelling on a side-garden plot in a conservation area. Because it is one dwelling in a designated area, a statement is required. The fact sheet above gives the assistant the inputs. A typical first draft (illustrative) opens like this:

Appearance: The proposed dwelling has been designed to a high standard and will enhance the character of the conservation area. Its contemporary design draws on local vernacular and uses high-quality materials throughout.

Access: The dwelling fully complies with all relevant accessibility standards and will provide excellent access for all users.

Both paragraphs would be rejected by an experienced architect, for the same reason. They say nothing that can be checked. The architect rewrites them from the drawings:

Appearance: Facing brick to match the adjoining terrace, with a pitched slate-effect roof at the same pitch as the neighbours. Timber windows in a vertical proportion echo the front elevation of the terrace. The ridge is 0.4 m lower than the terrace ridge, so the dwelling reads as a subordinate infill rather than a continuation.

Access: A level path from the pavement leads to a level threshold at the front door, with a minimum clear opening width of [ARCHITECT TO CONFIRM]. One parking space is provided at the front. The approach was not subject to separate consultation.

The rewritten version names materials, gives a measurable relationship to the neighbours and states plainly that no consultation took place, because the guidance asks the statement to detail any consultation on access. The sentence "fully complies with all relevant accessibility standards" has been cut, since the architect would need to prove it and has not checked it against a named standard.

Is a statement required? Four cases worked through

The table below applies the guidance's categories to four small schemes. Treat it as practice for reading the rules, and confirm each answer against your own authority's validation list. (Illustrative schemes.)

Paste the guidance text into the assistant and ask it to classify your scheme, then compare its answer with the table logic above. If the two disagree, the guidance wins and so does the authority's local list.

Check 3: figures against the drawings

Every number in the statement should match a drawing or a schedule: gross internal area, ridge height, number of bedrooms, parking spaces, distances to boundaries. Take a printed copy of the statement, tick each number against the drawing and write the sheet reference in the margin. An assistant that "rounded" 78 square metres to "around 80" or turned a 7.2 metre ridge into "approximately 7 metres" is making a small error that a neighbour's objection can quote back at you.

Check 4: policy references against the current plan

This is the check where AI fails most often, so do it by hand. For each policy the draft cites, open the current adopted local plan and any relevant neighbourhood plan, and confirm three things: the policy number exists, the title matches, and the paragraph supports the point it is cited for. Where a draft cites a national policy document, check you have the current version, since these are revised from time to time. If the model cited something you cannot find, delete the sentence rather than searching for a policy to fit it.

A practical routine: paste the policy text you intend to rely on into the prompt, instruct the model to quote only from it, and ask for each quote to be marked with the policy number from your paste. Then verify the quotes against the source documents. The model has done the formatting; you have done the verifying.

Check 5: the context and the site visit

The statement must show how the context of the site was appraised. That means someone has been there. An assistant has not, and it fills the gap from generic knowledge of "typical" streets. Common invented details include "mature trees along the boundary", "a mix of building styles" and "good public transport links". Replace each with something you saw, measured or photographed. If your site notes are scattered, turning site visit notes and photos into a report gives you a clean source to draft from. Add two or three photos with captions to the statement: the street frontage, the junction with the neighbour, the rear boundary. Those do more work than paragraphs of description, and the officer will recognise the place.

Check 6: claims you cannot support

Search the draft for superlatives and for compliance language: "high quality", "sensitive", "enhance", "fully complies", "sustainable", "inclusive". Each is acceptable only when the next sentence says how. "Sensitive to the conservation area" becomes "uses brick and slate to match the three adjoining houses". "Sustainable" becomes "a fabric-first design with insulation above the minimum in the current building standards [ARCHITECT TO CONFIRM figure]". If you cannot supply the how, delete the claim.

Check 7: client confidentiality and ownership of the text

Before uploading a client's drawings, check the engagement terms and your tool's data settings. Plans contain names, addresses and sometimes sensitive information about how people live. Use a business plan of the assistant, since vendors state that business plans of ChatGPT and Claude do not train on your content by default, and check the current settings yourself because they change. Where possible, work from a fact sheet like the one above rather than the drawings. The wider issues are covered in copyright and client data risks of AI in architecture practices.

A filled-in context paragraph, and a before and after

The context section is where site knowledge shows. Here is the difference between what an assistant writes from a thin brief and what an architect writes after a site visit. (Illustrative.)

Before (from a thin brief): "The site is located in a residential area with a mix of building types and good access to local amenities. The proposal has been designed to respect this context."

After (from the visit and photos): "The plot is the side garden of No. [number], at the end of a terrace of eight two-storey brick houses built in the same period. The terrace shares one ridge line, one eaves height and slate roofs. The street is quiet, with pavement parking on one side. A mature apple tree stands at the rear boundary and is retained. The adjoining house has a blank flank wall facing the plot, so the new dwelling will not overlook existing windows."

The second version tells the officer what is there. It also sets up the later paragraphs: the matching brick, the ridge height, the retained tree. A model cannot write it without the facts, so feed the facts in as bullet points from your site notes and let the assistant turn them into sentences.

Using the assistant as a critic of your own edit

Once the statement is edited, start a fresh chat and give it the final text with this instruction:

You are a planning officer reading this design and access statement. List: (1) any sentence that makes a claim without saying how; (2) any policy citation I should check; (3) any figure that appears twice, and whether the two versions agree; (4) anything a neighbour could reasonably challenge. Do not rewrite. Quote each sentence you flag.

The "do not rewrite" line matters. A critic that rewrites will reintroduce the generic phrasing you have just removed. Take the flagged list, fix what is real, and ignore the rest. In practice the useful hits are repeated figures that drifted and compliance claims you forgot to cut.

Time and cost: a quick sum

A small practice might spend three hours writing a short statement from scratch: one hour gathering facts, one hour drafting, one hour editing. With a fact sheet and an assistant, drafting drops from an hour to perhaps ten minutes, but the checks do not shrink. Say the practice charges its time at $90 an hour (illustrative). Three hours is $270 of time; the AI-assisted route is about two hours, or $180, a saving of roughly $90 per application. The gain is real but modest, and it disappears if a policy error causes a validation query. The safe way to bank the saving is to spend it on the checks, not to skip them.

More examples of drafts that need a human

A listed building, treated as an ordinary house

An assistant asked for a statement for alterations to an old farmhouse wrote a general design narrative. A listed building consent application needs more: the statement must explain how the proposed works take account of the building's special architectural or historic importance, the physical features that justify its listing, and its setting. The architect added a short heritage paragraph from the heritage statement, and moved the access explanation to cover only the exterior, since the guidance does not require access to be explained where works affect only the interior. Where a planning application goes in alongside the listed building consent application, the guidance asks for one combined statement that meets the requirements of both, so the heritage paragraph and the seven headings sit in the same document.

A statement that described the wrong neighbours

A draft for an extension at the end of a terrace said the scheme "respects the semi-detached character of the street". The street is terraced. The model had inferred the house type from the word "extension". The fix was to include a one-line street description in the fact sheet, and to add a captioned photo of the elevation.

A scheme that grew between drafts

An architect revised the plans from a 78 square metre dwelling to 84 square metres after pre-application advice, but the statement text, edited by hand and by the assistant across several chats, still said 78 in two places. The planning officer noticed. The remedy is to keep the fact sheet as the single source: update it first, then regenerate the statement, never patch figures one at a time.

Access language copied from a larger scheme

A draft mentioned "dedicated accessible parking bays" and a "platform lift", copied from patterns typical of large schemes. The dwelling has neither. Anything in the draft that the drawings do not show is a deletion, not a rewording.

A short routine for each application

1. Confirm from the guidance and the local validation list whether a statement is required.
2. Write the fact sheet from the drawings, with sheet references, and add the policy extracts you will rely on.
3. Draft with the assistant, using the seven headings and the instruction to flag uncertain claims.
4. Run checks 3 to 6 yourself with a printed copy and a pen.
5. Add captioned photos and one or two annotated diagrams.
6. Read the final text aloud once. Anything that sounds like a brochure is a candidate for cutting.
7. Save the fact sheet and the prompt with the job file so the next revision starts from the same source.

For the surrounding paperwork, how architects use AI for fee proposals, briefs and paperwork shows where else the same draft-then-check pattern pays off, and AI in a small architecture practice puts planning statements in the wider picture of where a small practice saves time. If you use AI to read plans before writing the fact sheet, see what to check afterwards in reading construction drawings with AI.

Handing over to the client and the planning officer

Send the client the statement with a covering note that says what it claims, so they are not surprised by a sentence about parking or materials that they had not agreed. Clients often change their minds about a window or a boundary between the statement and the decision, and the statement then no longer matches the scheme. Agree that any change to the drawings triggers a re-check of the fact sheet and the statement before resubmission.

If the planning officer asks a question about the statement, answer from the fact sheet and the drawings, not by asking the assistant. The assistant does not remember your site, and a quick answer generated on the spot can contradict what is already in the application. Keep the fact sheet beside the phone for that reason.

What stays with the architect

Judgement about what makes the design suit its context, whether a policy genuinely supports the scheme, and what is said on the practice's behalf in a public document: these cannot be handed over. AI is a quick first drafter of structure and phrasing, and a useful critic when you ask it to list weak claims. The architect decides what is true and what goes in, and puts their name on it.

Design and access statements and AI: questions

Does every planning application need a design and access statement?

No. Government planning guidance lists the cases: major development, applications for dwellings or buildings of 100 square metres or more in a designated area (a World Heritage Site or conservation area), and listed building consent. Many householder applications do not need one. Check your planning authority's validation list before writing anything.

How long should a design and access statement be?

Short. The guidance says the level of detail should be proportionate to the complexity of the application and should not be long. For a small scheme, two to four pages with a few annotated images usually does the job. An AI draft tends to run long, so cut it back to what the scheme and the policies need.

Can AI cite local plan policies correctly?

Not reliably. Models invent policy numbers and quote old versions. Give the assistant the policy text you have downloaded and ask it to quote only from that, then have the architect confirm each reference against the current adopted plan. Never submit a policy citation you have not looked up yourself.

Should I upload the client's drawings to an AI tool?

Only if your tool settings and the client agreement allow it. Plans carry addresses and sometimes personal details. Use a business plan that does not train on your content, redact what you can, and tell clients in your terms that AI tools are used in drafting under the architect's control.

Is an AI-drafted statement a problem for the planning officer?

Officers judge the content, not the author. A statement that is generic, mentions features the site does not have, or cites policies that do not exist damages the application. A short statement tied to the drawings and the site, checked by the architect, reads the same whoever typed the first version.

Further reads

• AI Software for Architectural Drawings: Notes, Schedules and Sheet Checks — Sheet and schedule checks that keep statement figures matching the drawings.
• AI Policy for Architects: A Ready-to-Use Checklist and Clauses — A practice AI policy that sets who checks drafts before they leave the office.
• AI Tools for Architects 2026: A Toolkit From Brief to Handover — Where planning statements sit among AI tools from brief to handover.
• Party Wall Notice Template: AI Draft Checked Against the 1996 Act — Another statutory document drafted with AI and checked line by line.
• Claude vs ChatGPT vs Gemini for Architects: Which to Pay For — Which assistant to pay for when drafting long technical text.
• AI Renders vs Outsourced Visualisation: What Practices Save — Images to illustrate the statement, and who should make them.
• How to Use AI in Architecture Design: Concept Options for Small Practices — A concept workflow for small architecture practices: a numbered brief register, planning limits with page references and a brief check after every AI step.
• How to Use Claude AI in Architecture: Specs and Planning Reports — Summarise specifications and planning documents with Claude, check every clause against the original, and keep client material out with a never-paste list.
• AI Tools and AI Development: The Complete 2026 Guide — the AI hub, including every tutorial in the AI-for-business series.

Sources: government planning practice guidance on making a planning application (Design and Access Statements, paragraphs 029 to 031 and the listed building consent sections), read in November 2026; no vendor-specific facts relied on.