Two contractor quotes can look wildly different even when both contractors have priced the same drawings. The difference is often not just margin. It can be scope, allowances, preliminaries, exclusions, provisional sums or assumptions that are not obvious on first read.
Need clearer build costs before the project moves further?
Send the drawings, scope notes or quote information you already have. Cost Estimator can help prepare a measured estimate or cost breakdown so the construction numbers are easier to review.
Start with scope, not the total
The cheapest quote is not automatically the best price, and the highest quote is not automatically inflated. Start by checking whether each contractor has priced the same scope and specification.
Look for exclusions and assumptions
Exclusions are where many quote problems hide. Developers should check whether demolition, drainage, utilities, scaffolding, temporary works, making good, waste, access constraints and external works are included or excluded.
Check preliminaries
Preliminaries can be a major difference between quotes. Site setup, supervision, welfare, access, protection, temporary services and programme length all affect the real cost of delivering the work.
Watch provisional sums
A provisional sum is not a fixed price. If a quote relies heavily on provisional sums, the final construction cost may move once the detail is known.
Compare quantities where possible
A measured estimate helps developers compare the structure of a quote rather than only the headline total. If quantities or work sections are missing, it is harder to know what has really been priced.
Use independent estimating support
Cost Estimator can help review drawings, scope and quote information so the developer has a clearer benchmark before committing to a contractor price.
For developer-focused estimating support, see construction cost estimating for property developers.
