Instantly calculate your loft conversion costs based on size, type, and region. Updated for 2025, our calculator gives accurate pricing to help you budget with confidence.
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Use our free Loft Conversion Cost Calculator to get an instant price estimate tailored to your loft conversion. Simply select your loft type, size, insulation level, and location to see how much a conversion could cost in 2025. Whether you’re budgeting for a Velux, Dormer, Mansard or Hip-to-Gable loft, this calculator gives you a clear estimate before you request a detailed quote from a specialist.
Your estimate is based on average market rates for your region and conversion type. For a detailed quote tailored to your property, we work with trusted loft conversion specialists across England and Wales. Click below to compare quotes and get expert advice, no obligation, just accurate guidance.
Using a calculator is a quick way to understand the likely cost of a loft conversion, but homeowners often want clarity on how accurate it is, what’s included, and how it compares to a full quote. These FAQs cover the most common points, from insulation costs to finance options, so that you can use the tool with confidence.
The calculator gives an instant estimate based on national averages for different loft types, sizes, insulation levels, and locations. It’s designed to provide a realistic starting point, but final costs depend on your property and chosen finishes.
Yes. You can estimate costs for popular types of loft conversions, including Velux, Dormer, Hip-to-Gable, Mansard, Bungalow, and Modular projects.
An estimate is a quick guide to average costs, while a quote is tailored to your property after a site survey. Use the calculator to budget, then compare quotes from loft specialists for exact pricing.
The calculator gives you an instant online estimate. For a full, fixed quote, you’ll need to complete our form to collect expert quotes from trusted providers.
Yes. The calculator factors in insulation as part of the overall build cost. For separate insulation-only projects, see our see our loft insulation cost guide and loft insulation grants.
Yes. Once you have an estimate, you can use it to explore finance options with your bank or lender. Some providers offer dedicated home improvement loans for loft conversions.
Loft Conversion Types: Explore the various types of loft conversions, to find the best fit for your home. This guide provides detailed descriptions and benefits of each type.
Loft Conversion Costs: Get a comprehensive breakdown of the costs associated with different loft conversions. Learn about the factors that influence pricing and budget considerations for your project.
Finance for Your Loft Conversion: Discover various financing options available for your loft conversion. This guide explains different loan types, grants, and budgeting tips to make your project affordable.
