Write the scope as three lists — what is included, what is excluded, and how anyone will know it is finished — and let AI do the drafting from your site notes. The reason to be precise is not tidiness: an ambiguous term in a contract you drafted is generally read against you.
Key takeaways
A scope of work exists to answer one question in advance: when there is a disagreement in week six about whether something was in the price, what does the document say? Write it as three lists. What you are doing. What you are not doing. How completion is judged.
The drafting itself is exactly the sort of structured writing a language model handles well. You dictate what you saw and what you intend; it returns a numbered scope in your house format, with the exclusions separated out and a list of the things it could not infer from what you said. That last list is the useful part.
If a scope can be read two ways, the reading is not a coin toss. Our sister firm explains the contra proferentem rule, under which an ambiguous contract term is interpreted against the party that drafted it. Contractors draft most residential scopes. So the vague line you wrote to avoid an awkward conversation at signing is the line you lose on later.
The same is true of changes. Most disputes are not about whether extra work happened; they are about whether it was extra. Where the base scope is precise, a change is obvious. Where it is loose, everything is arguable — which is how you end up in the territory covered by change order disputes with a contractor. CCDC publishes CCDC 16, a guide to changes in the contract, for the same reason.
1. The work, stated as verbs and quantities. “Supply and install 42 linear feet of upper cabinets per drawing A-3” is a scope line. “Kitchen” is not.
2. The exclusions. Written as a list, in the same document, not implied by absence. Appliances, window coverings, landscaping restoration, asbestos abatement, temporary heat, permit fees.
3. Work by others. Name who is doing it. A scope that says the electrical is “by others” without saying who has a hole in it.
4. Allowances and provisional sums, with the basis stated — what quantity, what quality, what happens if the selection exceeds it.
5. Standards and code edition. Ontario publishes a Building Code Compendium and enforcement rests with municipal building officials; the National Building Code of Canada 2020, published by the National Research Council, sets out technical requirements for the design and construction of new buildings, as well as the alteration, change of use and demolition of existing buildings. Which edition applies is a jurisdictional question — the NRC itself directs you to check with the municipal, provincial or territorial official. Say in the scope which one you priced.
6. Permits and notifications, with the responsible party. For electrical work the Electrical Safety Authority requires almost all electrical work to be reported by filing a notification of work, filed before the work starts. Someone has to do that. Write down who. Getting it wrong is not just a paperwork slip: the Building Code Act, 1992 makes contravening the Code itself an offence, with fines running up to $500,000 for a corporation on a first conviction and $1,500,000 on a subsequent one — a real reason the scope should name who is filing before work starts, not after an inspector asks.
7. Acceptance criteria. What test, what tolerance, what document. “Passing final inspection and issue of the Certificate of Acceptance” is an acceptance criterion. “To the owner’s satisfaction” is a trap.
8. Site conditions assumed. Access, hours, storage, power, parking, existing conditions you did not open up.
A prompt that produces a usable draft
“Draft a scope of work in our standard format from the notes below. Produce four sections: Included Work (numbered, with quantities and drawing references where I gave them), Excluded Work, Work By Others, and Acceptance Criteria. Do not invent quantities, materials, brands or dimensions. Where a detail is needed and I did not give it, list it under Open Items with the question you need answered. Use Canadian spelling and metric units where I used them.”
The Open Items instruction is what makes it worth doing. A model asked to produce a complete scope will fill gaps plausibly. A model asked to expose gaps will list them.
A renovation contractor walks a basement in Toronto, dictating for six minutes: existing height, where the drain is, that the homeowner wants a bathroom in the northeast corner, that there is knob-and-tube visible in one joist bay, that the client mentioned a wet bar “maybe”.
The transcript goes into the scope prompt. What comes back is a draft with 31 numbered inclusions, an exclusions list that correctly carries the asbestos and mould clauses from the house template, a Work By Others entry for the electrical service upgrade, and six open items — including the wet bar, the knob-and-tube remediation extent, and whether the bathroom rough-in location has been confirmed against the existing drain invert.
The contractor answers the six items in a phone call that evening, prices the scope, and sends it. The value was not the writing speed. It was that six things which would otherwise have surfaced in week three surfaced before the price was fixed.
The scope text can be drafted. The commercial terms should not be generated: price, payment schedule, deposit, cancellation rights, warranty period and dispute wording are the parts a customer can hold you to, and consumer-facing contract requirements differ by province. Keep a lawyer-reviewed template for those clauses and let the model populate the scope sections only.
Also resist letting the model write exclusions it invented. An exclusions list padded with boilerplate the client did not discuss reads as bad faith and, in a residential job, invites the argument that the exclusion was buried. Every exclusion should correspond to something a reasonable client might otherwise have assumed was included.
You will get a document, and it will be confident, and roughly a third of it will be invention. The workable pattern is dictation by the person who walked the site, plus a template that already contains your standard exclusions, plus a mandatory open-items list.
Reference them, by sheet number and revision date, and keep a copy of the revision you priced. Repeating drawing content in prose creates two sources of truth that will disagree later.
Detail costs nothing at drafting time and pays at dispute time, but there is a limit: a scope so prescriptive that ordinary means-and-methods decisions become contractual breaches hurts you. Be exhaustive about outcomes and boundaries; be silent about how the crew achieves them, unless the method is the point.
It works better, because you control both sides of the format. A consistent subcontract scope template is also what makes bids comparable later — every sub is pricing the same list, so the differences between quotes mean something.
A 30-minute call is enough to tell you whether AI pays for itself here.
