Begin with the business problem, not a list of screens. What kind of user will use this, how many times a day, and what happens today? An estimator who knows what you are trying to achieve often proposes an alternative that costs less; someone handed only a list of screens can only price exactly what you asked for.
Define what is included as concrete flows: who does what, and what happens next. Every bit as useful, write down what you are not building. An explicit list of exclusions saves more disagreement at delivery time than any other single page. Indicate as well which parts are firm and which may still change — the difference changes the price, and php laravel vs node js hiding it helps no one.
Write down the hard constraints. These include existing systems the typescript software has to talk to, existing databases and software development pricing their quality, security and compliance rules, user volumes, target platforms and infrastructure that is already decided. If a deadline is real, explain what drives it: an experienced team is usually able to resequence the work to hit it, provided they hear about it early.
Say what the word done means for the important items. Testable acceptance criteria do not require formal language: a short paragraph setting out the expected behaviour is sufficient. This one section shortens the sign-off process dramatically and closes off most late-stage disagreement.
To close, state what you want in the response. Require a task-level breakdown, the assumptions behind each number, the main risks and a range rather than a single figure. Read a wide range as useful information rather than evasion: it usually points to exactly which is better laravel or django requirement is unclear. From there rewrite that part and ask for a new estimate — the second estimate will be far closer to reality.