Open with the business problem, not a list of screens. Who will use this, with what frequency, and how is the job done today? A vendor who understands the goal can propose an alternative that costs less; one who only sees a list of screens will price your assumptions along with the work.
Describe 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. A written out-of-scope list removes more disagreement later than the rest of the brief combined. Mark too which items are decided and which are still open — the difference changes the price, and pretending everything is fixed only hurts you.
Set out your constraints. The list covers systems you must integrate with, existing databases and their quality, security and compliance rules, user volumes, target platforms and any technology you are committed to. If a deadline is real, say why: a good team can often resequence the work to protect it, but not if the date is a secret.
Say what done means for the important items. Clear acceptance criteria need not use formal language: a short list setting out what a user should be able to do is enough. This one section compresses the sign-off process by a surprising margin and saas custom development eliminates the most common source of disputes.
One last thing, state what you want in the response. Ask for a breakdown by feature or module, a written list of assumptions, the main risks and a low number and laravel development company a high number. Read a wide range as information, not evasion: it normally identifies exactly which requirement is unclear. From there clarify that area and ask again — the revised figure is much more reliable.