Project Estimators
Planning a whole build? Our project estimators go beyond a single material and give you a complete shopping list for the most popular DIY and garden projects. Enter your project size and we work out every major material — from sub-base and footings to framing, boards, cladding and fixings.
Each estimator supports both metric and imperial units and includes sensible waste allowances, so you can budget and order with confidence before you start. Pick your project below.
Project Estimators Calculators(6)
Build a Shed Estimator
Full material list for a timber shed — floor, framing, cladding, roof sheathing, felt and fixings — from the shed size and roof style.
Build a Patio Estimator
Work out the slabs or pavers, sub-base, sand and cement needed to lay a patio of any size.
Build a Deck Estimator
Complete decking material list — joists, deck boards, posts, fixings and concrete — from the deck dimensions.
Build a Driveway Estimator
Full driveway material list — sub-base, sand and surface (gravel, block paving, concrete or tarmac) for your driveway size.
Build a Retaining Wall Estimator
Estimate blocks or sleepers, backfill gravel, drainage pipe and concrete footing for a retaining wall.
Build a Treehouse Estimator
Estimate the platform timber, decking boards, railings, roof and fixings for a raised treehouse or play platform.