Search a website brief and you get a stack of downloadable templates: sections for goals, audience, deliverables, timeline. None of them say which section actually changes what a studio quotes you. Two things do. A real budget range, and a named decision maker. Everything else on the template is scaffolding around those two.
Start with one sentence: what the site has to do, not what it should look like. Is it there to convert visitors into calls? To sell directly? To hold a brand together across a dozen landing pages, or just stop looking amateur next to a competitor's site? Name who reads it too, and what they already believe walking in. A studio scoping "a marketing site" with no stated job to do will quote the wrong project, then charge you again later to fix the scope.
Give a range, not a number you've researched to the dollar. Custom studio work in the US typically runs $100 to $149 an hour, and full projects land anywhere from under $10,000 for something simple to $100,000 or more once ecommerce, a content system, or custom copywriting enters the brief. That spread isn't a failure of research on your part. It's the actual shape of the market. What the range buys you is a studio that can tell you honestly, on the first call, whether you're a fit, instead of three weeks into a proposal neither of you should have started.
Name who signs off, and how. One owner deciding alone moves differently than a marketing lead who has to bring it to a board. This is the section most templates skip entirely, and it's the one that tells a studio who they're allowed to email with a question, and who gets to change the brief midway through. A brief with no named approver is how a site gets rebuilt in week six by someone who was never on the first call.
List the pages and the must-have features. Just as usefully, say what isn't in this round. A booking system, a blog, a members area: any of these changes both the price and the calendar, so say plainly if it's coming now or later. Leaving it vague doesn't keep options open. It just moves the disagreement to the invoice.
State the real date something needs to be live, and why: a launch, a trade show, a funding close, a lease running out on the old site. If there's no real deadline, say that too. A soft "as soon as possible" reads to a studio as no deadline at all, and gets scheduled behind the client who gave them a true one.
None of this needs to be long. A page, honestly filled in, tells a studio more than a stack of mood boards ever will. Expect a good studio to push back on parts of it once the work gets real. That's the brief doing its job, not a sign it was wrong. Bring the objective, the range, the decision maker, the scope, and the date to the first call, and the conversation starts where it should: on the work, not on guessing what you meant.