Most project disputes are not about quality. They are about expectations that were never written down. A short, clear scope of work protects both the customer and the provider.
Six things to include
First, the objective: one or two sentences on what the project should achieve for the business.
Second, the deliverables: a list of what will be handed over, in what format. A named document or working feature is a deliverable. An activity such as 'support' is not.
Third, what is out of scope. This is the most skipped item and the most useful one.
Fourth, inputs and responsibilities: what the customer must provide, and by when.
Fifth, the review process: how many review rounds are included and how acceptance is confirmed.
Sixth, the commercial terms: price, payment stages and how changes are priced.
Keep it short
A good scope for a small project fits on one or two pages. Long documents are not safer. They are simply read less carefully. Use plain words and avoid terms that different people may understand differently.
Agree changes in writing
Changes are normal. The risk is informal change. When the scope changes, write a short note with the new deliverable, the effect on time and the effect on price, and have both sides confirm it by email.
This article gives general information only. It is not professional, legal or safety advice for your specific situation.