Cost calculators
Free, instant ballpark estimates for common building and renovation jobs. Use them to get a feel for budget before you post your job and get real quotes from vetted builders.
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Extension cost calculator
Single or double-storey, by footprint size, finish, and region.
🏠Loft conversion cost calculator
Velux, dormer, hip-to-gable, or mansard, with or without an en-suite.
🍳Kitchen & bathroom cost calculator
By room size and finish tier, from budget to premium.
🎨Paint & materials calculator
How many litres of paint you'll need and roughly what it'll cost.
Ready for a real quote?
Post your job free and hear directly from vetted builders in your area.