Begin with the business problem, not a list of screens. What kind of user will use it day to day, how many times a day, and what does the process look like without it? An estimator who grasps the purpose will suggest an alternative that costs less; one who only sees a feature list can only price exactly what you asked for.
Define what is included as concrete flows: who does what, node.js web development company and what happens next. Equally important, list what is out of scope. A written out-of-scope list saves more friction at delivery time than almost anything else in the document. Mark too which items are decided difference between laravel and .net which may still change — honest teams price those differently, and concealing the open questions only hurts you.
Write down the hard constraints. These include the platforms and services involved, the data you have and where it lives, compliance requirements, traffic expectations, supported browsers or devices and stacks you cannot change. If a deadline is real, say what depends on it: an experienced team can often cut the right scope to hit it, but only if they know it exists.
Say what the word done means for the important items. Acceptance criteria do not need special syntax: a plain-language note stating what must be true when the feature works will do. This single habit compresses acceptance testing considerably and closes off most late-stage disagreement.
To close, state what you want in the response. Require an itemised estimate, the assumptions used, whatever the team considers risky and a range rather than a single figure. Treat a wide range as useful information rather than evasion: fintech software development it tells you exactly which requirement is unclear. At that point tighten that section and saudi arabia software development agency ask for a new estimate — the second estimate is much more reliable.