Home Renovation Cost Calculator
Estimate the cost of your UK home renovation. Toggle projects on and off, adjust quality and region, and see how much value each improvement adds to your property.
Total cost
£13,475
1 project
Projects
Specification & Region
London costs ~25% more than average. Northern regions ~15% less.
Experts recommend a 10-15% contingency buffer for unexpected costs — plumbing surprises, structural issues, or material price changes.
Total renovation cost
£13,475
1 project · standard spec · National Avg
Before contingency
£12,250
Base renovation cost
Contingency buffer
£1,225
10% safety margin
Monthly (over 12mo)
£1,123
If spread over a year
Cost per m²
£817
Avg across all projects
Cost breakdown by project
Property value impact
Current value
£300,000
Estimated new value
£330,000
Value added
+£30,000
Return on investment
+123%
Your renovation costs the equivalent of 3,850 cups of coffee — or £37/day if you saved for a year.
Verdict: Great investment! Your renovations are projected to add 123% more value than they cost. The property value uplift significantly exceeds the renovation spend.
Costs based on 2025/26 UK averages. Sources: HomeOwners Alliance, FMB, Beams Renovation, finspace.co.uk. Value-add estimates are typical averages — actual uplift depends on local market conditions, build quality, and the current state of your property. Always get at least 3 quotes before committing to any work.