A builders clean is the one commercial cleaning job that is almost never priced by the hour, because the effort depends on how much residue is there rather than how big the room is. A contractor quoting without seeing the site is guessing, and a quote given without conditions attached will be revised once somebody arrives. Both sides are better off with the conditions written down first.
Why area alone does not price it
Two identical floors can differ by a factor of three. Plaster dust that has been walked through for a fortnight, silicone on glass, adhesive on vinyl and paint on frames all take time that has nothing to do with square metres. That is why an experienced contractor asks about condition and protective films before offering a figure, and why the cheapest quote is often the one from the firm that asked the fewest questions.
The eight facts a quote needs
Floor area by level and floor finish. Number of storeys and whether a lift is available. Glass area and whether films are still on. Number of washrooms and kitchens. Whether snagging is complete. Whether power and water are on. Whether waste removal is included. And the access window, because a night or weekend job carries a premium that has to be stated rather than discovered.
What an itemised quote should show
Separate lines for the builders clean and the sparkle clean, because they happen at different times and one may be deferred. A line for glass if it is significant. A line for waste, or a clear statement that waste is excluded. The team size and the number of days. And whether the price assumes a single mobilisation, since returning because trades were still on site is the most common cause of a second invoice.
Regional differences are labour, not distance
Prices track local wages and how far a team travels to reach you, which is why a quote in London sits above one in a smaller city. Comparing a regional quote against a London figure without adjusting for that tells you nothing. Compare instead on team days and what is itemised, and the difference between contractors becomes visible.
Questions people ask about after builders cleaning prices
Is a builders clean priced per square metre?
Often as a starting point, then adjusted for condition, glass, access and whether snagging is finished. Condition is what moves the final figure.
Should I pay for a builders clean before snagging?
No. Snagging trades bring dust and marks back, so a clean before they finish is a clean you buy twice.
Does the price include removing protective film?
Only if it says so. Film removal on a large glazed elevation is a job in its own right and should be its own line.
Why did the price change when the team arrived?
Almost always because the condition was worse than described or the trades had not finished. Both are avoidable with a site visit or a written condition assumption.