Email:
info@fixiz.co.uk
Physical address:
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?
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.
Trusted & Accredited Loft Conversion Specialists
Fixiz Ltd is a fully registered and insured construction company (Company No. 14561967). We carry full public liability insurance and our team holds relevant qualifications for structural work, electrical installations, and plumbing.
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Fully Insured
Public Liability Insurance
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Building Regs
Full Compliance Guaranteed
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Registered Company
Companies House No. 14561967
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Quality Guaranteed
Skilled In-House Tradesmen
What Our Loft Conversion Clients Say
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“Fixiz did a fantastic dormer loft conversion for us, creating a spacious master bedroom with en-suite. The project was completed on time and the finish was superb. Very professional team throughout.”
– Karen W., Finchley, N12
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“We chose Fixiz for our hip-to-gable loft conversion and couldn’t be happier. They handled all the party wall agreements and Building Regs. The extra bedroom has transformed our home.”
– Michael R., Barnet, EN5
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“Excellent loft conversion creating a home office with Velux windows. The natural light is amazing and the insulation keeps it comfortable all year round. Highly recommend Fixiz.”
– Lisa H., Enfield, EN2
Loft Conversion FAQs
Do I need planning permission for a loft conversion?
Most loft conversions in London fall under Permitted Development rights and do not require planning permission. The main exceptions are if your property is in a Conservation Area, is a listed building, or if the conversion exceeds certain size limits. For terraced and semi-detached homes, you will typically need a Party Wall Agreement with adjoining neighbours. Fixiz handles all necessary applications.
Which type of loft conversion is best for my property?
The best type depends on your roof structure and property type. Dormer conversions are the most popular as they add the most headroom. Hip-to-gable works well for semi-detached homes. Mansard conversions maximise space with a near-vertical wall. Velux conversions are the most affordable option using the existing roof structure. We assess all options during our free survey.
How long does a loft conversion take?
A typical loft conversion takes between 6 and 10 weeks from start of construction. Simpler Velux conversions may take as little as 4 weeks, while larger mansard or L-shaped conversions can take up to 12 weeks. The planning and design phase adds an additional 4 to 8 weeks before construction begins.
Will I need to move out during the conversion?
In most cases, no. Loft conversions are carried out from the scaffolding outside and from within the loft space. The main disruption occurs when the staircase is installed, which typically takes 1-2 days. Our team works to minimise disruption to your daily routine throughout the project.
Can I add a bathroom to my loft conversion?
Yes, adding an en-suite bathroom or shower room is one of the most popular additions to a loft conversion. It significantly increases the value and functionality of the new space. We can install full plumbing, tiling, and all sanitary ware as part of the conversion project.
Request Your Free Loft Conversion Quote Today
Ready to transform your unused loft into valuable living space? Contact Fixiz today and one of our loft conversion specialists will arrange your free, no-obligation site survey. Call us on 020 7971 1318 or WhatsApp us on 07903 122 883.