How to write a website technical brief — a structure that works
Most clients open with one sentence: "I want a clean, modern website." The studio starts building, because asking more questions feels like friction when the client already seems happy. Two or three weeks in, it turns out "clean" meant something different to each side — and that gap shows up as an extra invoice somewhere in the middle of the project.
The problem is not the designer's skill. The problem is that nobody wrote down what "clean" actually means. A technical brief exists for exactly this — agreeing on requirements, ownership and boundaries in writing, before work starts. Below is what sections it needs, and what argument each one prevents.
Why a technical brief matters
Every requirement that isn't written down at the start comes back later as extra work, a dispute, or both. The gap looks small — one extra page, a forgotten integration — but a change made after the design is approved and the code is written always costs more than the same change made up front, because part of the finished work has to be redone.
A brief solves this with a document, not trust. When one side says "I assumed", the document shows what was actually agreed. That protects the client and the studio equally — neither has to rely on the other's memory.
The 7 sections a brief needs
1. The project's goal and how success is measured
"We need a website" is not a goal. Is the site for collecting leads, for online sales, or for B2B credibility? Without an answer, design decisions — like what goes on the first screen — get made by guesswork. The success measure belongs in the same section: "50 enquiries a month" and "make it look nice" produce two completely different projects.
2. The audience and how it decides
Who is this for — the end buyer, a wholesale client, both? Each audience decides at a different speed and asks different questions. Skip this section, and the argument over whose language the copy should speak surfaces mid-project instead of on day one.
3. Sitemap and feature list
Which pages exist, what each one does, which forms, filters, or account areas are needed. Without this list, the quote itself is a guess — and a guess gets corrected halfway through the work, after the price is already agreed.
4. Design references and brand materials
Two or three sites you like, the logo file, brand colors, a style guide if one exists. "I don't like it" usually comes from this section being left blank — the designer can't see the picture in your head and has to guess at it.
5. Technical requirements
How many languages, which integrations (payment, CRM, email), which hosting, who manages the domain. Adding this section later almost always costs extra, because the base structure was already built without it.
6. Content ownership
Who supplies the copy, images and video, and by when? This is the single biggest cause of delay — the design is done, but the site sits "almost ready" for months because the text never arrived.
7. Delivery terms, revision count and timeline
How many rounds of changes are included, what deadline each phase has, how support works after handover. An unwritten revision count turns into an expectation of unlimited revisions — exhausting for both sides.
Three details almost everyone forgets
The seven sections cover the basics, but in practice three details get left out almost every time — and they cause the most friction at the end.
Who owns the domain and hosting. Whose name is the registration under, and who keeps the login — the studio's or the client's? It takes one line in the brief, but leave it out and "who holds the keys to the site" becomes a real problem exactly when the relationship ends.
Which browsers and devices get tested. "Mobile-friendly" says nothing on its own — which screen sizes, which older browsers are supported? Skip this, and "there's a bug on the site" versus "it looks fine on my screen" can go back and forth for weeks.
Whether basic SEO is included. Page titles, a sitemap, speed optimization — if none of that is written down as its own line, the studio often treats it as an add-on and the client assumes it's already covered. Both sides can be right, because nobody wrote it down.
Who writes it, who signs off
A studio can't write the brief alone — only the client knows the goal and the audience. A client can't write it alone either — the technical section (item 5) usually isn't theirs to know. The right order: the client drafts the first five sections in plain language, the studio adds the technical part, both sides confirm it — an email is enough, it doesn't need a formal signature.
An unwritten requirement becomes an expensive surprise halfway through the project.
What actually happens without one
The usual pattern: the project starts, the design gets approved, development begins. In week three the client says "we also need this filter." For the studio that's unplanned work and time; for the client it feels like "I mentioned that from the start" — except nowhere was it written down. The result is a delay, an argument over the extra invoice, and sometimes lost trust. Nobody made a mistake — nobody wrote it down.
Where to start
Writing a brief from scratch sounds harder than it is — filling in these 7 sections matters more than making it look polished. If you want one shaped to your own project, our website development service starts every engagement by filling in these 7 sections together, so the price and the timeline are based on what's written, not on a guess.
