Loft Conversion Cost Calculator UK 2025
Use our free UK Loft Conversion Cost Calculator to get an instant, accurate estimate for your dormer, mansard, hip-to-gable or Velux loft conversion . Includes labour, materials, planning, and structural costs based on 2025 UK market rates.
Calculate the cost of a loft conversion in the UK . Velux, dormer, hip-to-gable and mansard prices based on real 2025 tradesperson quotes.
Cost Calculator
We have developed four different sophisticated cost per square metre calculators - one for extensions, one for loft conversions , one for refurbishment projects and one for new builds, and all of them updated for 2025 price per square metre build cost prices for London and the UK . Just pick the construction cost calculator below that matches the type of project you are considering. Put in the ...
Loft Conversion Costs UK 2025 : All Types Compared A loft conversion is one of the most cost -effective ways to add living space to a home. Unlike an extension, you are using existing roof space rather than your garden, and there is no requirement for planning permission in most cases. Here is a comprehensive breakdown of costs by conversion type for 2025 .
Loft Conversion Calculator
Free loft conversion cost calculator for UK homeowners. Estimate prices for Velux, dormer, mansard conversions . Get instant quotes now.
A loft conversion is one of the most cost -effective ways to add living space and value to your home. In 2025 , the average UK loft conversion costs between £20,000 and £75,000 depending on the type, size and location.
Loft Conversion Cost 2025
Definitive Loft Conversion Cost 2025 Guide. Compare Velux, Dormer, Hip-to-Gable, and Mansard prices, including premium London costs .
Overview of Loft Conversion Costs Loft conversion costs in the UK for 2026 commonly range from £25,000 for a basic rooflight (Velux) conversion to £70,000+ for higher-spec builds like mansards and complex structural changes. Your final price depends on conversion type, floor area, structural work, finishes, access constraints, and regional labour rates. What's Included in a Typical Quote ...
Loft Conversion Cost 2025
Planning loft conversions in 2025 ? Find your complete UK guide to loft conversion cost . Discover the average cost and factors impacting prices.
A loft conversion is the most efficient way to add a bedroom and bathroom without sacrificing garden space. Costs range from around £20,000 for a basic Velux conversion to £65,000 or more for a mansard, depending on the structural work involved, your location, and the quality of finish. The type of conversion is the biggest cost factor.