LOFT CONVERSION LONDON
H1: Loft Conversion London – Expert Loft Builders | LASTING LTD
A loft conversion is the smartest way to add extra living space and increase your property value in London — without extending your footprint. LASTING LTD specialises in all types of loft conversions including Dormer, Hip-to-Gable, Mansard and L-shaped conversions.
We handle everything: design, planning, structural steel (RSJs), insulation, roofing, plumbing, electrics, finishing and Building Control sign-off.
Increase property value by up to 20–30% • Add bedrooms, bathrooms, office or studio • Free site visit
Fully insured • NHBC-registered • 10+ years of experience
Why Get a Loft Conversion in London?
A loft conversion provides:
A new bedroom or master suite
Additional bathroom or ensuite
Home office / studio space
More natural light
No need for rear/side land
One of the highest ROI home improvements
Perfect for:
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Families needing extra space
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Rental properties / HMOs
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Increasing value before sale
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Creating modern living areas
Why Choose LASTING LTD
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Specialist loft conversion team
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Structural RSJ beams included
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Planning & Building Control supported
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Transparent pricing, no hidden extras
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Premium finishing & attention to detail
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Fast WhatsApp communication
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Full project management from start to finish
CTA: Get a Free Loft Conversion Quote
Types of Loft Conversions We Build
1. Dormer Loft Conversion (Most Popular)
Benefits:
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Adds the most usable floor area
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Great for bedrooms & bathrooms
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Fast approval, cost-effective
2. Hip-to-Gable Loft Conversion
Ideal for:
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Semi-detached & detached properties
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Maximising head height
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Preparing for large dormer additions
3. Mansard Loft Conversion
Benefits:
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Premium appearance
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Maximum internal space
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Perfect for high-end properties
Often used in:
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Victorian/Edwardian terraces
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Conservation areas (subject to approval)
4. L-Shaped Dormer Loft Conversion
Best for:
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Large properties / lofts
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Two-room layouts (bedroom + study)
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HMOs / multi-room conversions
5. Velux / Rooflight Loft Conversion
Benefits:
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Most affordable
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Fastest to build
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Perfect when good head height already exists
What’s Included in Every Loft Conversion
STRUCTURAL WORKS
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RSJ steel beam installation
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Joists, trimmers & supports
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New staircase installation
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Dormer construction (if required)
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Roof rebuilding (Mansard/Hip-to-Gable)
EXTERNAL WORKS
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New windows, skylights, rooflights
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High-performance insulation
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Waterproofing & roofing membranes
INTERNAL WORKS
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Plumbing for bathroom/ensuite
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Electrical installation
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Plastering & painting
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Flooring
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Heating & ventilation
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Custom wardrobes / storage (optional)
DOCUMENTS & MANAGEMENT
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Architectural drawings (optional)
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Structural engineering calculations
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Building Control approvals
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Weekly updates & full site management
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Completion certificate & warranty
Loft Conversion Cost in 2025 (London Prices)
| Loft Type | Typical Cost |
|---|---|
| Velux / Rooflight | £20,000 – £35,000 |
| Dormer Loft Conversion | £35,000 – £55,000 |
| Hip-to-Gable | £45,000 – £65,000 |
| Mansard Loft Conversion | £55,000 – £85,000 |
| L-Shaped Dormer | £60,000 – £95,000 |
Prices include: Labour Materials Structural steel Plumbing & electrics Insulation & finishing Project management
CTA: Request a Personalised Loft Conversion Estimate
Timeline for a Loft Conversion
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Design & planning: 2–6 weeks
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Structural installation: 2–4 weeks
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Dormer/roof works: 2–4 weeks
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Interior finishing: 2–6 weeks
Total build duration: 8–14 weeks
Benefits of Working With LASTING LTD
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High-quality structural engineering
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Modern finishes and premium materials
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Fast start dates
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Fair and transparent pricing
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Excellent communication
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Clean site management
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100% Building Control approved
Areas We Cover
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North London
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East London
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Enfield
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Barnet
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Haringey
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Edmonton
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Walthamstow
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Palmers Green
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Finchley
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Muswell Hill
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Tottenham
Related Services:
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House Extension London
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Single Storey Extension
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Double Storey Extension
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Wrap-Around Extension
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Structural RSJ Installation
Related Areas:
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Loft Conversion North London
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Loft Conversion Enfield
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Builder in North London
Start Your Loft Conversion Today
Turn your unused loft into a beautiful, functional new living space.
Premium workmanship, strong structure, excellent finish — guaranteed.
CTA:
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Get a Free Quote
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WhatsApp Us (Instant Response)
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Book a Site Visit
Loft Conversion London
Embrace the charm of added living space with Lasting ltd, your reliable loft conversion company in London.
With our wealth of experience, we expertly transform unused attics into beautiful, functional spaces. Whether it’s a home office, a guest room, or a tranquil retreat, your loft conversion in London is bound to enhance your lifestyle and property value.
Opt for the finest loft conversion North, East, South, West and Central London has to offer with Lasting ltd. Make the most of your home today.
Type of Loft Conversions in London
Every loft conversion is a unique journey, reflecting individual tastes and preferences.
Lasting ltd, as a dedicated loft conversion company in London, prides itself on meeting and exceeding all client expectations.
Our portfolio comprises several types of loft conversions, each popular and in demand in the London market. We are experienced and skilful in all of them.
Here’s a glimpse into some of the most common London loft conversion styles we offer:
Each style boasts its unique benefits and aesthetic appeal. The choice depends on your home’s existing structure, local planning constraints, and of course, your personal vision for the space.
Types of Houses for Loft Conversion
With a rich experience spanning 15 years, Lasting ltd has had the privilege to work on diverse house types across London.
We understand the architectural quirks and advantages of each, crafting loft conversions in London that respect the original building’s spirit and inject a fresh breath of life into it.
Here’s a brief overview of some popular house types we’ve converted:
Victorian: Characterised by high ceilings and period features, Victorian homes offer ample loft conversion potential. We respect their heritage while creating a modern, functional space.
1920s – 1930s: Known for their larger floor plans and bay windows, these houses provide plenty of room for creative loft conversions. Our team draws upon the unique layout to maximise your new living area.
Semi-Detached: Commonly found across London, semi-detached homes often benefit from side extensions and loft conversions. We seamlessly integrate the new space to maintain the property’s symmetry.
Conservation Areas: While loft conversions in these areas may be more regulated, Lasting ltd has ample experience navigating planning permissions to deliver stunning and compliant results.
Whether you own a classic Victorian or reside in a conservation area, Lasting ltd is your trusted partner for any London loft conversion. Let us transform your house into a dream home.
Requirements for Loft Conversion
Creating a successful loft conversion in London involves meeting some essential requirements.
One fundamental factor is the availability of a minimum head height of 2.2 m. This is crucial to ensure enough space for a comfortable living area once the conversion is complete.
However, what if your current loft height is below 2.2 m? Don’t worry – Lasting ltd is well-versed in overcoming such challenges.
Some options include removing a roof section or lowering the room’s ceiling below. We analyse your home’s structure and devise solutions that meet general requirements and align with your visions.
Remember, with the right team of loft builders; there are ways to turn even the seemingly impossible into reality.
Loft Conversion Process
At Lasting ltd, as your trusted loft conversion specialist, we break down the steps involved to ensure a smooth transition.
Step 1:
Site Survey
The initial step involves comprehensively analysing your existing loft space. We look into the structure, space, head height, and other aspects to evaluate the feasibility and plan the design.
Step 2: Building
Regulations and Contract
We move on to the paperwork once the survey is complete. Adherence to building regulations is crucial for the safety and sustainability of the conversion. The contract is drawn up, capturing all aspects of the project to ensure transparency.
Step 3:
Finishing
The final step of the process is the transformation of your loft into a comfortable living space. Our loft conversion builders complete the construction, interior finishes, and clean-up, ensuring your new loft is ready to use.
READY TO MAKE YOUR DREAMS A REALITY?
PAY ONLY FOR WORK THAT HAS BEEN DONE!
Why Work With US
FREE CONSULTATION
at all stages
24/7 COMMUNICATION
with project manager
£10M EMPLOYER’S
liability insurance
FREE SCHEDULE
of works
Integrated, In-house Team Will Work On Your Project
Benefits from our trade discounts
£5M public & products liability
10% only deposit payments
Detailed cost breakdown
In the End You Will Get
A HIGH-END PRODUCT DELIVERED ON TIME AND ON BUDGET!
Have a Question?
Leave message and we’ll contact you back
Work time
Mon-Fr: 8.00 am – 5.00 pm
Sat: 8.00 am – 1.30 pm
Adress
London
34 Pine House 9 Droop Street W10 4EJ
Contacts
info@lastingltd.com
07448886776
