Loft Conversion Services Across the Whole of the UK
We design and build every type of loft conversion, from budget-friendly Velux projects to full mansard transformations. Crucially, certified structural engineers work on every job. We also handle planning permission for you. Whatever your roof shape or budget, we'll find the right conversion for your home.
FREE NO-OBLIGATION ESTIMATE
Get Your Free Estimate
All Loft Conversion Services
We offer eight loft conversion services: dormer, Velux, hip-to-gable, mansard, bedroom and en-suite conversions, plus planning permission and structural calculations. Every one comes with full project management, certified structural engineering, and a building regulations completion certificate on handover. In addition, prices start from £15,000 for a Velux conversion.
Dormer Loft Conversion
The UK's most popular loft conversion type. A box-shaped extension on the roof slope dramatically increases headroom and usable floor space. What's more, most dormers qualify as permitted development.
Velux Loft Conversion
The most affordable way to convert your loft. We fit Velux skylights into your existing roof structure, bringing in natural light and ventilation without changing the roofline. As a result, you rarely need planning permission.
Hip-to-Gable Conversion
Ideal for semi-detached and detached homes with a hipped roof. We build the sloping side of the roof out into a vertical gable wall, which significantly increases loft volume. In most cases, it falls under permitted development.
Mansard Loft Conversion
Maximum space and a premium finish for urban properties. A near-vertical rear wall with a flat roof gives you the largest possible floor area. That said, mansards usually need full planning permission — we handle the application for you.
Loft Bedroom Conversion
A beautifully finished bedroom in your loft, complete with insulation, flooring, and lighting. We also fit a safe staircase that fully complies with building regulations. As a result, you receive a completion certificate on handover.
En-Suite Loft Conversion
A loft bedroom with its own private en-suite bathroom. We handle all the structural work, plumbing, waterproofing, and design from start to sign-off. In short, one team manages everything.
Planning Permission
We handle every planning application on your behalf, from permitted development checks to full planning submissions. Our team deals directly with councils across the UK. Best of all, this guidance comes free with every project.
Structural Calculations
Certified structural engineers work on every project. They produce full beam schedules and loading calculations, and they support party wall agreements as standard. On top of that, it all comes at no extra cost.
Compare Conversion Types
A UK loft conversion typically costs £15,000–£60,000+ and takes 4–14 weeks, depending on the type you choose. Velux conversions sit at the affordable end, while mansards cost the most but add the most space. The table below compares rough costs, timescales, space gain, and planning requirements side by side.
| Conversion Type | Rough Cost | Timescale | Space Gain | Planning Required |
|---|---|---|---|---|
| Velux | £15k–£25k | 4–6 weeks | Low–Medium | Usually not required |
| Dormer | £25k–£45k | 6–10 weeks | Medium–High | Usually Permitted Dev. |
| Hip-to-Gable | £30k–£50k | 8–12 weeks | High | Usually Permitted Dev. |
| Mansard | £35k–£60k+ | 10–14 weeks | Very High | Usually full planning |
All costs shown are estimates based on typical UK projects. After a survey, you'll receive a fixed-price quote tailored to your location, property type, and specification.
What Every Service Includes
Every loft conversion we deliver includes a free survey, planning support, structural calculations, full project management, and a 10-year guarantee. In other words, you get the same professional oversight whether you choose a simple Velux or a full mansard conversion. The checklist below shows exactly what comes as standard.
- Free initial loft survey and feasibility assessment
- Fully itemised, fixed-price quote — no hidden extras
- Permitted development check or full planning application
- Certified structural engineer calculations and beam schedule
- Party wall agreement support where applicable
- Full project management from survey to sign-off
- Building regulations approval and completion certificate
- 10-year workmanship guarantee
Not Sure Which Type is Right for You?
Our surveyors assess your roof structure, headroom, budget, and planning constraints, then recommend the best conversion type for your home. Better still, the survey is completely free and there's no obligation to go ahead.
Survey
We visit and assess your loft
Recommendation
We advise the best type for you
Fixed Quote
Full price within 48 hours
Ready to Get Started?
Book your free loft survey and we'll assess your property and talk you through your options. You'll then receive a fully itemised, fixed-price quote within 48 hours of the survey. There's no cost and no obligation at any stage.