Free · No obligation · UK-wide
Get Your Free Loft Conversion Quote
Answer eight quick questions about your property and see an indicative cost range for your loft conversion in under two minutes — with a copy emailed straight to you.
- ✓Instant indicative estimate
- ✓Emailed copy for your records
- ✓Free no-obligation survey
- ✓UK-wide coverage
Your instant quotation
Eight simple questions. No measurements or technical knowledge needed.
1What type of property is it?
2How many bedrooms does the property have?
3What type of loft conversion are you considering?
Tap the information icon for a short explanation of each type.
4Approximately how large is the loft?
5What will the loft mainly be used for?
6What is the current condition of the loft?
7Which of these do you expect the project to include?
Select all that apply. Optional.
8What is the property postcode?
We use this to reflect regional pricing differences.
Free indicative estimate · No obligation to proceed
How it works
Tell us about your loft
Answer eight quick questions about your property and what you want to create.
See your estimate instantly
Your indicative cost range and likely build duration appear on screen and by email.
Book your free survey
A suitable specialist visits, measures up and prepares an accurate fixed quotation.
Loft conversion types we cover
Dormer loft conversion
A dormer extends vertically from the existing roof slope, creating additional floor space and headroom. It is one of the most common loft conversion types in the UK.
Relative cost: Moderate
Hip-to-gable conversion
A hip-to-gable conversion extends the sloping side of a roof into a vertical gable wall, squaring off the loft and adding significant internal volume.
Relative cost: Moderate to high
Mansard loft conversion
A mansard changes the roof structure to create a nearly vertical rear wall and a flatter roof, providing the largest increase in usable space of any conversion type.
Relative cost: High
Velux or rooflight conversion
A rooflight conversion keeps the existing roof shape and adds roof windows, with structural strengthening, insulation and a staircase inside the current loft space.
Relative cost: Lower
L-shaped dormer
An L-shaped dormer joins a dormer over the main roof with a second dormer over a rear outrigger or back addition, forming an L in plan.
Relative cost: High
Modular loft conversion
A modular conversion is manufactured off site and craned into position, with the existing roof removed and the prefabricated loft fitted in its place.
Relative cost: Moderate to high
Frequently asked questions
How accurate is the estimate?
It is an indicative range based on typical UK build costs for the answers you give, adjusted for your region. A free survey is needed before a fixed price can be confirmed.
Is the quotation service really free?
Yes. The estimate and the follow-up survey are free, with no obligation to proceed.
Do I need planning permission?
Many loft conversions fall under permitted development, but flats, listed buildings, conservation areas and front-facing dormers usually need permission. Building regulations approval is always required.
What happens to my details?
They are used to prepare your estimate and to arrange your survey with a suitable loft conversion specialist. We never sell your details on for unrelated marketing.
Loft conversion guides
How much does a loft conversion cost in the UK?
A clear breakdown of loft conversion costs in the UK, what drives the price, and how to budget realistically for your project.
Types of loft conversion explained
Dormer, hip-to-gable, mansard, L-shaped and rooflight conversions compared, with the property types each one suits best.
Do you need planning permission for a loft conversion?
When a UK loft conversion falls under permitted development, when planning permission is required, and what building regulations always apply.
How long does a loft conversion take?
A realistic week-by-week timeline for a UK loft conversion, from first survey through to handover.
Is my loft suitable for conversion?
Head height, roof structure, access and services: the practical checks that determine whether your loft can be converted.
See what your loft conversion may cost
Answer a few simple questions and get an indicative estimate in minutes, plus a copy by email. Free, with no obligation.
Get My Free Estimate