How To Write A Project Brief That Gets You An Accurate Estimate

Open with the business problem, not your preferred technology. Which people will use the system, with what frequency, and what does the process look like without it? A vendor who grasps the purpose often proposes a cheaper route to it; one who only sees a feature list will price exactly what you asked for.



Set out the scope as concrete flows: what the user does and what the system does in response. Every bit as useful, state explicitly what is out of scope. An explicit exclusion list removes more disagreement at delivery time than any other single page. Also mark which decisions are settled and which are still under discussion — the difference changes the price, and pretending everything is fixed only hurts you.



Set out your constraints. This means systems you must integrate with, the data you already hold and laravel vs django comparison its condition, compliance requirements, traffic expectations, target platforms and any technology you are committed to. If a deadline is real, say why: an experienced team is usually able to rearrange the plan to meet it, but not if the date is a secret.



Write down what done means for the important items. Acceptance criteria do not require special syntax: a short list describing the expected behaviour will do. This one section shortens the sign-off process by a surprising margin and removes most late-stage disagreement.



One last thing, state what you want in the response. Require an itemised free development estimate, the assumptions behind each number, whatever the team considers risky and a low number and a high number. Treat a wide range as information, not evasion: it usually points to exactly which requirement is unclear. At that point tighten that section and request a revised number — the next version is the one worth planning around.