Start with the business task
A useful website brief describes what a visitor needs to achieve. “A modern site” leaves too many decisions open. “A retailer must find our product range, request a trade account and receive confirmation” gives the team a flow to design and verify.
List the primary audience, the action each audience should take and who handles the result. Identify the content owner and the person who can approve the work. A short, agreed brief is more useful than a long feature list with no priority.
Separate launch scope from later improvements
For every proposed page or feature, record its purpose, required content, responsible owner and acceptance condition. Classify it as needed for launch or a later option. Include less visible work such as access management, form routing, error states and analytics consent.
An illustrative acceptance condition is: a valid enquiry reaches the agreed inbox once, the visitor sees a confirmation, and invalid input receives a clear message. This is a planning example, not a claim about a particular customer's project.
Describe integrations and existing data
Name the systems that must exchange information: CRM, stock catalogue, payment provider or booking platform. Ask which documented interface is available, who can grant test access, and which system owns each record. Do not put passwords or customer exports in a public brief.
An integration estimate depends on that access and on the quality of existing data. A provider logo on a proposal is not evidence that the required account features or API permissions are available.
Include migration and search continuity
If an existing site is being replaced, inventory its URLs, useful content, forms and downloadable files. Map retired URLs to an appropriate destination where one exists. Decide how the domain, email and DNS will be handled, and who approves the change window.
Search continuity includes preserving valuable content and checking redirects, canonical URLs and language versions. Google describes URL structure practices; the actual migration plan should fit your site.
Compare proposals using the same deliverables
Ask each proposal to state the pages and templates included, content responsibilities, integration assumptions, review rounds, ownership, training and ongoing support. Separate one-time work from recurring costs. A fixed launch date should state its dependencies rather than assume content and access will arrive immediately.
Before launch, agree how staging review, mobile checks, forms, accessibility checks and rollback will be demonstrated. Record what remains outside scope and how changes will be priced.
Prepare the next conversation
Bring your priority journeys, current URLs, content status and integration contacts to the discovery session. Mars AI can use that information to discuss a website development scope and an agreed delivery plan. The final price and timing depend on the work confirmed in the proposal.