Cost Estimate Disclaimer

UK Home Costs provides indicative planning estimates, not quotations, valuations or professional advice.

Last reviewed: 2 September 2026.

Actual prices can differ materially because of location, access, specification, property condition, contractor availability, tax treatment, regulatory requirements and unforeseen work.

Calculator outputs

Calculator results combine dated UK benchmark data with modelling assumptions such as regional multipliers, size scaling and optional project allowances. Where a figure is a statutory fee rather than a market estimate, we identify the jurisdiction and effective date and recommend checking the authority before submission.

Safety, structural and specialist work

A cost calculator cannot decide whether work is safe, legally permitted or technically suitable. Structural alterations, asbestos, gas, electrical work and other specialist activities may require appropriately qualified professionals, licences, notifications, surveys, approvals or safety controls. Use the relevant professional or authority to determine the correct scope before work starts.

Get project-specific quotes

Before entering a contract or making a significant purchase, obtain itemised quotations from appropriately qualified and insured professionals who have inspected your property and scope of work. Check what is included for access, professional fees, approvals, waste, tax and making good.

Grants and schemes

Government grants, tax rules and eligibility criteria can change. Where a calculator models a grant, verify the current rules with the relevant official authority before relying on the result.

Planning and other statutory fees

Application routes, concessions and fees can depend on jurisdiction and circumstances. A fee shown by UK Home Costs is a reference to the stated source and effective date, not confirmation that the selected route is the correct one for your property.

Our data

We publish the main data sources and update dates used by our calculators. See Sources & Data and Methodology.