Construction Calculator for United Kingdom

Free construction calculators preconfigured for United Kingdom. FRELUX runs every calculation with this market's template defaults: local wall units, 25kg cement bags, and local electrical and plumbing practice. Prices come from the live price database in GBP (£).

United Kingdom building-practice defaults

• Default wall unit: Standard Facing Brick (215x102.5x65mm) (215 x 65 x 102.5 mm)
• Cement bag weight: 25 kg
• Currency: GBP (£)

Electrical practice

• Standards: BS 7671:2018+A2:2022 (IET Wiring Regulations)
• Nominal voltage: 230V single-phase / 400V 3-phase
• Typical wiring: Flat twin & earth (6242Y PVC/PVC) clipped direct or capped

Plumbing practice

• Standards: BS EN 806 (Water services) & BS EN 12056 (Gravity drainage systems)
• Water supply piping: Copper pipe (BS EN 1057) or Barrier PB/PEX push-fit (BS 7291)

Start a calculation

• Build-to-Roof Estimator: full construction cost from foundation to roof
• BOQ Generator: bill of quantities with VAT and contingency
• Electrical Estimator: wiring takeoff per United Kingdom practice
• Plumbing Estimator: water supply and drainage takeoff
• Regional Cost Index: current material price levels

Are these figures certified for United Kingdom?

They are template starting defaults for quantity takeoffs, referenced to the standards listed above. Always confirm sizes, materials and current prices with your local supplier or licensed professional before purchasing.