Capture your website's functional and non-functional requirements before development — user stories, features, integrations, and constraints.
A thorough requirements document is the foundation of a successful web development project. This template helps UK businesses capture both functional and non-functional requirements before development begins, covering user stories, feature specifications, third-party integrations, performance expectations, and technical constraints. It ensures alignment between your business objectives and the development team's deliverables, reducing scope creep and costly rework.
Business owners, marketing managers, and project managers at UK businesses commissioning a new website or web application who need to clearly define their requirements for developers.
A solid requirements document covers user stories, must-have features, third-party integrations, non-functional needs like performance and security, and any hosting or technical constraints. It should also define acceptance criteria for each requirement so everyone agrees what "done" looks like before a developer writes a line of code. This template covers each of those sections.
Scope creep is the leading cause — requirements that were assumed rather than written down get added mid-project and each change typically costs more once development has started. Most UK agencies quote a fixed price against a defined scope, so any gaps in the original brief become chargeable extras later.
Aim for enough detail that a developer unfamiliar with your business could build the feature correctly without guessing. User story format ("As a customer, I want to...") works well for small sites, while larger builds with logins, payments, or integrations typically need more granular specifications per feature.
Share it before requesting quotes so every agency prices against the same scope, making comparisons fair. Keep it as a living reference during the build and sign off changes formally rather than verbally, since undocumented changes are the most common source of disputes over final invoices.
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