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128 City Road, EC1V 2NX, London,UK
Loft Conversion London | Expert Loft Conversions in North London
Looking for a professional loft conversion in London? Fixiz Ltd specialises in high-quality loft conversions across North London and the M25 area. Transform your unused loft space into a beautiful bedroom, home office, or living area with our expert team.
Why Choose Fixiz for Your Loft Conversion in London?
Dormer loft conversion London With years of experience delivering exceptional loft conversions throughout London, we understand what homeowners need. Our team of certified builders and project managers ensure every loft conversion is completed to the highest standards, on time and within budget.
Our Loft Conversion Services Include:
- Dormer Loft Conversions – The most popular choice, adding significant headroom and floor space
- Hip to Gable Conversions – Ideal for semi-detached and end-terrace properties
- Mansard Loft Conversions – Maximum space with a distinctive flat roof design
- Velux/Rooflight Conversions – Cost-effective option using existing roof structure
- L-Shaped Loft Conversions – Perfect for Victorian and Edwardian terraced houses
Loft Conversion Cost in London 2026
Loft conversion costs in London typically range from £35,000 to £70,000+ depending on the type and size. Here’s a general guide:
| Type | Average Cost |
|---|---|
| Velux/Rooflight | £35,000 – £45,000 |
| Dormer | £45,000 – £60,000 |
| Hip to Gable | £50,000 – £65,000 |
| Mansard | £55,000 – £75,000 |
Do I Need Planning Permission for a Loft Conversion?
Most loft conversions in London fall under Permitted Development rights, meaning you won’t need planning permission. However, you will need:
- Building Regulations approval
- Party Wall Agreement (for terraced/semi-detached properties)
- Structural calculations
Our team handles all paperwork and approvals as part of our service.
The Loft Conversion Process
- Free Consultation – We visit your property to assess feasibility and discuss your requirements
- Design & Planning – Our architects create detailed plans for your approval
- Building Regulations – We submit all necessary applications
- Construction – Typically 6-10 weeks depending on complexity
- Completion – Final inspection and handover
Areas We Cover for Loft Conversions
We provide loft conversion services throughout London including:
- North London (N11, N12, N13, N14, N20, N21)
- Barnet, Enfield, Haringey
- All areas within the M25
Get a Free Loft Conversion Quote
Ready to transform your loft? Contact Fixiz today for a free, no-obligation quote. Call us or fill out our contact form to discuss your loft conversion project.
Fixiz Ltd – Your trusted loft conversion specialists in London.
Explore our other property conversion services: garage conversion and house extension. We also offer comprehensive construction and renovation services across North London.
How Much Value Does a Loft Conversion Add?
A loft conversion is widely considered the most valuable home improvement you can make. In London, a professionally completed loft conversion can increase your property value by 20% to 25%. For an average North London property worth £550,000, that translates to an uplift of £110,000 to £137,500, making it one of the smartest investments for homeowners.
The key to maximising your return is choosing the right type of conversion for your property and ensuring all work is completed to Building Regulations standards with proper sign-off. A completion certificate is essential for mortgage and resale purposes, and Fixiz manages this entire process for you.
<✓ Fully Insured ⌂ Building Regs Compliant ⚒ Co. No. 14561967 ★ Skilled In-House Team
Real Results From Real Homeowners
Don’t just take our word for it — here’s what our clients say.
★★★★★
“The dormer conversion gave us a spacious master bedroom with en-suite. Completed on time, superb finish. Very professional throughout.”
Karen W. — Finchley, N12
★★★★★
“They handled all party wall agreements and Building Regs. The extra bedroom has completely transformed our home.”
Michael R. — Barnet, EN5
★★★★★
“Home office with Velux windows — the natural light is amazing. Insulation keeps it comfortable all year round.”
Rohan H. — Enfield, EN2
Loft Conversion FAQs
Quick answers to the most common questions.
Do I need planning permission for a loft conversion?
Most loft conversions fall under Permitted Development rights and don’t require planning permission. Exceptions include Conservation Areas, listed buildings, or conversions exceeding size limits. For terraced and semi-detached homes, a Party Wall Agreement is typically needed. Fixiz handles all applications for you.
Which type of loft conversion is best for my property?
It depends on your roof structure. Dormer conversions are most popular for maximum headroom. Hip-to-gable suits semi-detached homes. Mansard conversions maximise space. Velux conversions are the most affordable. We assess all options during our free survey.
How long does a loft conversion take?
Typically 6–10 weeks from start of construction. Simpler Velux conversions can take 4 weeks, while mansard or L-shaped conversions may take up to 12 weeks. Planning and design adds 4–8 weeks before construction begins.
Will I need to move out during the conversion?
In most cases, no. Work is carried out from scaffolding outside and from within the loft space. The main disruption is staircase installation (1–2 days). Our team minimises disruption throughout.
Can I add a bathroom to my loft conversion?
Yes — an en-suite bathroom is one of the most popular additions. It increases both value and functionality. We install full plumbing, tiling, and all sanitary ware as part of the project.
Get Your Free Loft Conversion Quote
Book your free, no-obligation site survey today. Most quotes delivered within 48 hours.
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