A quote that comes back within a day counts as a warning, not a service level. A competent team will come back with questions first: about users and software development blog volumes. A supplier that quotes with no clarification is probably guessing, and a guess becomes a change request later — at your expense.
Be wary of any distance between the engineers on the sales call and those who eventually appear in the repository. Insist on named engineers in the contract, with a clause covering replacement. A provider that will only describe a pool of resources and never names specific engineers is keeping its own flexibility at your cost.
Ask for access to the repository from the first week. A provider that hands over a build only at the end of each phase expects you to trust a black box. Daily commits reveal the actual pace far better than a slide deck. The same holds for the CI pipeline: hire laravel developer if there is no pipeline, promises about quality are just talk.
Loose contract language around IP is never a formality. The contract must state plainly that all deliverables become the property of your business as they are paid for. Also check which country's law applies and the payment schedule: a request for most of the money up front with nothing due in return for weeks takes away any leverage you would otherwise keep.
Finally, pay attention to how they communicate. Confirm how many hours you will share with your working day, which named person answers day-to-day questions and on what response times. Some genuine overlap generally works; zero overlap converts each small question into a day of delay. Sloppy written English in the early emails will not improve once the work starts.