Loft Conversions in London

Designed for Life, Built by Loftnix

About The Service

Above your ceiling lies the most overlooked opportunity in your home. A quiet space suspended above your world, full of light, air, and unrealised potential. At Loftnix Developments Ltd, we specialise in creating breathtaking loft conversions for clients across all of London’s postcode zones: SE, SW, N, NW, E, W, EC, and WC.

A loft is more than space-it’s sanctuary. It’s where morning light meets your quietest moments. It’s where a guest becomes family, a desk becomes inspiration, or a bed becomes peace. We don’t just build extra rooms-we build chapters of your life.

Why Convert Your Loft?

A professionally built loft conversion can:

Add up to 25% to your property value
Avoid the cost of moving or upgrading
Expand your home without using garden space
Provide a high-return investment
Improve insulation and energy performance
Let in light, elevate life

Types of Loft Conversions We Build

1.Dormer Loft Conversions

The most popular style across London, dormers extend vertically from your roof, creating a box-shaped structure with flat ceilings and clean walls-perfect for bedrooms, bathrooms, and offices.

Ideal in SE and E postcodes where terrace houses dominate.

2. L-Shaped Dormer

Combining two dormers over a rear and main roof-common in Victorian homes found in North and East London. Offers huge floor area, perfect for large master suites or split-level designs.

3. Hip-to-Gable Conversions

End-of-terrace and detached homes across SW, NW, and W London benefit from this technique. It extends the sloping side (“hip”) of your roof to a full-height wall (“gable”), adding width and creating internal symmetry.

4. Mansard Loft Conversions

A bold, elegant option often seen in Camden, Westminster, and other Central London properties. Requires more construction but delivers striking results with maximum internal space and style.

5. Velux (Rooflight) Conversions

Cost-effective and simple-using your existing roof shape with added skylights. Ideal in high-pitched homes or where planning is tight. Minimal external changes, maximum internal transformation.

Our Full-Service Loft Conversion Process

1. Consultation & Vision Mapping

We begin with a free site visit. We walk the space, listen to your goals, take exact measurements, and advise on what’s possible. Then we translate that into a visual concept and a detailed quotation.

2. Design & Architecture

We work with our in-house design team or your chosen architect to draw detailed plans. If needed,

we handle planning applications and permitted development certificates for your borough.

3. Structural Engineering

All conversions are supported by professional structural calculations, steel designs, and building regulation compliance.

4. Construction Phase

Our master builders begin the work: installing steels, insulating, building dormers, adding plumbing and electrics, creating custom staircases, and managing every layer from timber to tile.

5. Finishing & Sign-Off

From plaster to paint, from skirting boards to sockets-we complete every detail, professionally and respectfully. We snag, clean, walk you through it, and celebrate with you.

Where We Work

We cover:

South East (SE): Lewisham, Eltham, Greenwich
South West (SW): Clapham, Tooting, Wimbledon
North (N): Islington, Finchley, Tottenham
North West (NW): Camden, Hampstead, Brent
East (E): Hackney, Stratford, Walthamstow
West (W): Chiswick, Hammersmith, Acton
Central London: EC, WC
Outer zones: Enfield, Ilford, Croydon, Bromley

No matter your postcode, if you’re in London-Loftnix builds there.

Why Choose Loftnix for Your Loft?

Transparent, fixed-price quotes
Full compliance with building regulations
Friendly, punctual, tidy professionals
Deep structural expertise
In-house design and project management
10-year structural guarantee

What Clients Say

Loftnix turned our dark attic into the brightest room in the house. It's where we now spend all our time.

Sarah

SE10

Our loft conversion added a new bedroom, bathroom, and workspace. The craftsmanship was incredible.

Michael

From day one, they were organised and respectful. Clean site, great communication, stunning results.

Amina

SW12

Common Questions

Expand Your Space, Elevate Your Life..

How long does a loft conversion take?

Most standard loft conversions take between 6 to 10 weeks, depending on the complexity and size of the project. We’ll always provide you with a tailored schedule before starting.

Do I need planning permission for a loft conversion?

In many cases, planning permission is not required if your conversion falls under Permitted Development Rights. However, if your home is in a conservation area, a flat, or you’re making major changes (like raising the roof), permission may be needed. We’ll guide you through it.

How much does a loft conversion cost?

Prices vary depending on design, size, and finish. On average, a loft conversion in London ranges from £35,000 to £75,000+. After a site visit, we provide a detailed, fixed-price quote with no surprises.

What types of loft conversions are there?

We offer: Dormer Loft Conversions, Mansard Conversions, Hip-to-Gable Conversions, Velux (Rooflight) Conversions. Each option has different advantages. We’ll help you choose based on your roof shape, goals, and budget.

Will I lose space for the stairs?

Our architects design staircases to maximize space efficiency. We usually position them over the existing stairs or in less-used areas to keep floor space open.

Can you build during winter or bad weather?

Yes, we build all year round. For rainy days, we use full scaffolding with protective coverings (tin hats) to keep everything dry and safe

Is a loft conversion worth it?

Absolutely. A well-designed loft conversion can add 20-30% to your property value. Plus, it gives you extra space for bedrooms, offices, or a luxury en-suite without needing to move house.

Do you offer a warranty or guarantee?

Yes – all our work is covered by a 10-year structural warranty, plus all electrical, plumbing, and gas work is certified and registered with the relevant bodies.

Will I need to move out during the work?

In most cases, no. We manage the project to minimize disruption, and many of our clients stay home during the build.

How do I get started?

Click “Book a Free Visit” or fill in our Contact Form. We’ll visit, measure, listen to your vision, and guide you every step of the way – from drawings to completion.

Let's Build Your Dream Above You

The space you’ve always wanted is already part of your home. All it needs is a team that knows how to bring it to life. Let’s open it up, shape it, and let it shine.