A number produced without questions should be treated as a red flag rather than good service. A competent outsourcing project team will come back with a list of questions: about who owns the data and what happens on failure. A provider that commits to a figure with no clarification is simply pricing a guess, and a guess resurfaces as a change order — at your expense.
Watch for a gap between the people you meet and those who eventually appear in the repository. Request named engineers in the agreement, with wording that requires notice before anyone is swapped. A team that will only describe a pool of resources and never names people is preserving its own flexibility at your cost.
Require commit-level visibility from the start. A provider that shows code only at milestones is asking you to trust a black box. Regular commits and pull requests reveal the actual pace far better than any status report. The same holds for python vs php the CI pipeline: if there is no pipeline, assurances about quality are unverifiable.
Loose contract language around code ownership is never a formality. The agreement must state plainly that the code, designs and documentation belong to your business upon settlement of the relevant invoice. Check also the governing law and the payment schedule: a request for most of the money up front with no deliverable attached removes any leverage you would otherwise keep.
Lastly, php development services examine how they communicate. Ask what overlap there will be with your timezone, which named person handles questions and how does livewire work quickly. Some genuine overlap is usually enough; zero overlap converts a five-minute question into a day of delay. Unclear written communication in the proposal rarely improves under delivery pressure.