Renovation ROI Calculator — NW London
Does a loft conversion really add value? How much will a kitchen refit return? Enter your property value and renovation type to see estimated ROI based on real NW London market data.
£1.50m
Loft conversion — ROI estimate
Estimated value added
£225,000 – £375,000
Typical project cost
£35,000 – £80,000
Net gain range
£145,000 – £340,000
Rental payback
~4 yrs
Based on NW London market data. Value added assumes the property is sold post-renovation. Rental payback assumes 5% annual rental yield on value added. Individual results vary.
Get free quote for loft conversion →About these figures
Value-added percentages are derived from NW London estate agent data and RICS valuation reports. NW London property values are among the highest in the UK, meaning absolute returns are typically larger than national averages. Conservation area restrictions may affect what you can build — see our Hampstead conservation area guide.