Velux / Rooflight
Flood existing loft space with natural light using roof windows. The most cost-effective way to add a room.
Learn moreLoft conversion specialists · Windsor
Loft conversions in Windsor, Berkshire
We design and build beautiful, light-filled loft conversions across Windsor, Eton, Datchet and the Royal Borough — from first sketch to final coat of paint, all under one roof.
15+ yrscombined experience
10-yearstructural warranty
100%building-regs sign-off
Fullyinsured & accredited
180+conversions completed
£37ktypical Windsor project value
4.9★average client rating
0planning headaches for you
Why convert your loft?
Add space and value without moving home
A loft conversion is the smartest way to grow your home. You unlock the space you already own — no garden lost, no planning upheaval, and a typical 20% boost to your property's value.
- An extra bedroom, home office or playroom within weeks
- Often built under permitted development — no planning permission needed
- Cheaper than moving: no stamp duty, solicitors or removals
- Usually adds around 20% to your home's resale value
- Minimal disruption — most of the work happens in the roof
What we do
Loft conversion services in Windsor
Every home is different — that's why we tailor each conversion to your roof shape, budget and lifestyle.
Dormer Conversions
Add full headroom and floor space with a rear or side dormer — the most popular choice for extra bedrooms.
Learn moreHip-to-Gable
Turn a sloping side roof into a vertical wall for maximum usable space — ideal for detached and semi homes.
Learn moreMansard Conversions
Create a whole new floor with a near-vertical rear slope — the biggest transformation for terraced homes.
Learn moreL-Shaped Dormers
Wrap a dormer around the rear for two rooms in one — perfect for a master suite with en-suite.
Learn moreDesign & Planning
Architectural drawings, planning applications and building regulations — all handled by our in-house team.
Learn moreHow it works
A stress-free journey from loft to lovely
One dedicated team, one point of contact, and a clear timeline from day one.
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Free survey & quote
We visit your home, measure up and talk through your ideas — then send a detailed, no-obligation quote.
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Design & approval
Our designers create plans and manage planning permission and building regulations on your behalf.
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Build
Our skilled, tidy team builds your conversion to a fixed schedule, keeping you updated at every stage.
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Sign-off & enjoy
We finish, get building-control sign-off and hand over your warranty — ready for you to move in.
Transparent pricing
How much does a loft conversion cost in Windsor?
No hidden extras. We quote a fixed price before work begins, so you know exactly where you stand.
Local benchmark
£37,346
Average loft conversion cost in Windsor
Based on recent local project data, most Windsor conversions fall between £23,500 and £58,000 depending on size, type and finish.
From £23,540
Average £37,346
Up to £58,094
Velux / Rooflight
£25k – £40k
Rooflights, floor & staircase into existing space.
Dormer
£35k – £55k
Full-width rear dormer with en-suite option.
Hip-to-Gable & Mansard
£45k – £75k
Largest conversions adding a whole new floor.
Kind words
What Windsor homeowners say
"The team turned our dusty old attic into a stunning master bedroom with an en-suite. They were tidy, on time and on budget."
"From the first survey to the final handover, everything was explained clearly. The Velux room is now our favourite space in the house."
"They handled planning permission, building control and even the staircase design. Genuinely stress-free from start to finish."
Common questions
Before you get started
How much should I expect to pay for a loft conversion?
In Windsor, most conversions cost between £23,500 and £58,000, with an average of around £37,000. A simple Velux conversion starts lower, while a full dormer or mansard sits at the top of the range. We provide a fixed, itemised quote after a free survey.
Will I need planning permission?
Many loft conversions fall under permitted development and need no planning permission, subject to size and location limits. We check for you and handle any application if required.
How long does a loft conversion take?
A typical Velux conversion takes 6–8 weeks, while a dormer or hip-to-gable usually takes 10–14 weeks. We'll give you a clear schedule before we start.
Do you handle building regulations?
Yes. We manage building-control approval, structural calculations and all inspections — and provide certification on completion.
Where we work
Serving Windsor & the surrounding areas
WindsorEtonDatchetOld Windsor
SloughMaidenheadAscotVirginia Water
Englefield GreenSunningdaleWraysburyWindsor Great Park
Ready to unlock the space above you?
Book a free, no-obligation survey and quote. We'll visit your Windsor home, listen to your ideas and show you exactly what's possible.
Get a Free Quote