Range from the cheapest building of under stairs storage £675 (PI Building Limited based in SE9) to the dearest building of under stairs storage £2,415 (Bromley handyman based in BR2).
Comparing carpenter and joiners estimates for designing under stairs storage gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes to build under stairs storage in SE12 by posting a job with HaMuch and we will send it to carpenter and joiners in SE12.

"Under stairs storage"
SE6