Loft Conversions
A loft conversion in the UK costs between £15,000 and £60,000 depending on the type — Velux conversions start from £15,000, dormers from £25,000, and mansard conversions from £35,000.
We handle every stage for you. That starts with a free survey, then moves through structural design, planning permission checks, building regulations and the full build. As a result, you deal with one trusted team from first visit to final sign-off.
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Types of Loft Conversion
Dormer Loft Conversion
A dormer loft conversion costs between £25,000 and £45,000 in the UK, making it the most popular type for terraced and semi-detached homes.
Velux Loft Conversion
A Velux loft conversion costs between £15,000 and £25,000 in the UK — the most affordable option as it requires no structural changes to the roofline.
Hip-to-Gable Conversion
A hip-to-gable loft conversion costs between £30,000 and £50,000 in the UK and is suited to semi-detached or detached homes with a hipped roof.
Mansard Loft Conversion
A mansard loft conversion costs between £35,000 and £60,000+ in the UK — the most expensive type, but it delivers the largest usable floor space.
Loft Bedroom Conversion
A loft bedroom conversion costs between £18,000 and £35,000 in the UK, including insulation, flooring, a staircase, and building regulations sign-off.
En-Suite Loft Conversion
An en-suite loft conversion costs between £28,000 and £50,000 in the UK, combining a bedroom and private bathroom in the converted loft space.
How It Works
Free Survey
We visit your property, assess the loft space, and confirm suitability.
Fixed-Price Quote
Next, we send a fully itemised, fixed-price quote within 48 hours. No hidden costs.
Planning & Design
We handle all planning checks, structural design, and building regulations.
Build & Sign-Off
Our specialists complete the build and obtain building regulations sign-off.
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Available across London
Ready to Convert Your Loft?
Start with a free, no-obligation survey of your loft. After we have visited, you receive a written fixed-price quote within 48 hours. The good news is there is no pressure and nothing to pay until you are ready to go ahead.