Small practice economics of AI assisted drafting

AI drafting in a small architecture practice is a fee structure question before it is a technology question. In a four-person office the planning statement and the design and access statement are written on a Thursday evening by whoever has capacity, they are not separately billed, and they take longer than anyone admits. Changing how those documents get started changes what you can price, what you can promise on turnaround, and where your remaining hours go.

What it does not change is liability, competence requirements or the need to read what goes out with your name on it.

Where the drafting hours actually go

Break an average householder or minor application into its parts and the pattern is consistent across small practices.

Drawings and design development are billed. Site survey and measured work are billed. Pre-application correspondence is sometimes billed and often absorbed. The narrative documents, meaning the planning statement, the design and access statement and whatever the local list adds, are usually inside the fixed fee with no separate line.

Inside those narrative documents, the hours split roughly three ways. Finding and quoting the right policies takes time and is largely mechanical. Describing the site, its context and the proposal takes time and is partly repeated from the drawings. And the actual planning argument, the part where you explain why this design is the right response to this site and these policies, takes the least time and carries all the value.

That third part is what clients are paying for. The first two are overhead dressed up as professional work, and they are where a drafted starting point earns its place. The distribution on a small job is set out in more detail in where drafting saves time on a householder application.

Documents that repay automation

The pattern is clear once you sort documents by how much site-specific measurement they need.

Documents that repay a drafted start are the ones built mostly from policy, from the drawings you already have and from a structured description of the proposal. A Planning Statement. A Design and Access Statement. A Sustainability Statement. A Construction Management Plan. A Travel Plan or Waste Management Strategy on a small commercial scheme. In PlanScope these carry the lower difficulty ratings and the smaller credit costs, which is a reasonable proxy for how much of the content is derivable rather than measured.

Documents that do not repay it are the ones whose substance is a survey. You cannot draft your way to a bat emergence survey result, a ground investigation, a traffic count or a noise measurement.

The interesting middle is the document that has a derivable structure and a measured core. A heritage statement is a good example: the policy framework, the structure of a significance assessment and the harm test are all derivable, while the assessment of significance itself requires someone to look at the building. Draft the frame, do the looking yourself, and the document improves rather than degrades.

Writing a design and access statement that an officer can actually use is a craft skill that survives automation, and the approach in drafting a design and access statement an officer can use is where the remaining hours should go.

Documents that need a specialist whatever you do

Be clear with yourself and with clients about the ones you cannot take on.

An Environmental Statement must be prepared by competent experts under the Town and Country Planning (Environmental Impact Assessment) Regulations 2017. Protected species survey work and any mitigation licence require a suitably licensed ecologist under the Wildlife and Countryside Act 1981 and the Conservation of Habitats and Species Regulations 2017. The statutory biodiversity metric under the Environment Act 2021 expects a competent person. Land contamination reporting is expected to follow BS 10175 and to be prepared by suitably qualified and experienced persons. A fire statement for a relevant building requires fire engineering competence.

For those, a draft is a briefing document for the specialist rather than a deliverable. Used that way it does save money, because a specialist who receives a structured description of the site, the constraints and the proposal spends less time on scoping.

A larger group sits in the professional recommended category, including preliminary ecological appraisal, arboricultural impact assessment, air quality, noise, transport and viability work. Councils usually expect a suitably qualified author for these and professional review is strongly advised, so route them through a reviewer rather than issuing them on your own certificate. The professional directory is the route to someone who can review and sign off a draft.

Pricing a planning package honestly

Three models are in use and only one of them survives scrutiny.

The first is to keep the documents inside the fixed fee and absorb the time saved as margin. Defensible, simple, and it leaves the client unaware that anything changed.

The second is to reduce the fee by the time saved. Honest, and it trains clients to expect planning documents as a commodity, which is a hard position to reverse.

The third is to reprice around what you actually now do: a fixed fee for the documents, priced on review and argument rather than on typing, plus a separately identified allowance for specialist reports procured on the client's behalf. This is the one that holds, because it describes the work truthfully and it separates your fee from third-party costs the client can compare.

For the arithmetic, PlanScope publishes typical consultant ranges by report type, and a Planning Statement commonly attracts quotes in the region of £500 to £2,500. Against that, PlanScope pricing is one free report, £50 per report, or £150 per month, £600 per year on the Professional tier, which is described as being for architects, planning agents and consultants and which removes PlanScope branding, allows your own logo, gives priority generation and a saved project library. The difference between those numbers is the room you have to price in.

Do not price on the assumption that the draft is the finished document. That is where practices get into trouble.

Telling the client what review means

Say it once, at appointment, in writing, and in plain terms.

The documents are AI-assisted drafts, structured to planning policy, which the practice reviews and takes responsibility for before submission. Some report types legally require a licensed or competent professional and will be commissioned separately. No document guarantees planning approval.

That paragraph costs nothing and prevents the two conversations you do not want: the client who believed a report was a specialist survey, and the client who thinks a refusal was a drafting failure.

Expect the occasional question about authorship from a case officer, particularly on technical documents. What to do about it is covered in when a council asks who wrote your report, and the short answer is to be straightforward about it.

Quality control inside a team of four

A small practice cannot run a document review department, so the control has to be a habit rather than a process.

1. One named reviewer per document, who is not the person who generated it.
2. A standing check on every figure, address, policy number and dimension against the source, because a plausible wrong number is more dangerous than a blank.
3. A rule that any flag marking a missing site fact is resolved before submission, never deleted.
4. A read-aloud pass on the first two paragraphs and the conclusion, which is where generic writing survives longest.
5. A record of which version was submitted, kept with the application.

The flagging behaviour is the part to protect. A draft that inserts a clear marker where a site-specific fact is missing is telling you something useful, and a practice that trains itself to fill those markers properly gets better documents than one that treats them as an irritation.

What to keep doing by hand

The site visit. Nothing replaces standing in the garden and noticing that the neighbour's kitchen window faces the proposed extension at an angle the survey does not show.

The design argument. A statement that explains why the roof form responds to the terrace opposite, in the practice's own voice, reads differently from one assembled from policy. Officers notice.

The negotiation. Pre-application meetings, calls with the case officer and the conversation with an objector are where minor applications are actually won.

And the reading. If you would not put your name to a paragraph you have not read, do not put your name to a document you have not read either.

PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval. For specialist technical reports, qualified professional input may be required. This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it.