Expert Loft Specialists
Loft Conversion Specialists
Transform your unused attic space into a stunning new living area. Our expert team delivers premium loft conversions that add value and space to your London home.
Loft Conversion Types
We offer a range of premium loft conversion options, tailored to your property type and requirements.
Dormer Conversions
Our most popular option, dormer conversions extend outward from your existing roof slope, creating maximum headroom and floor space.
Starting from £45,000
Learn MoreHip to Gable
Perfect for end-of-terrace or semi-detached homes, this conversion extends the sloped side roof to create a vertical wall.
Starting from £55,000
Learn MoreMansard Conversions
Offering maximum space, mansard conversions feature a flat roof with a back wall sloping at 72 degrees. Ideal for period properties.
Starting from £65,000
Learn MoreL-Shaped Dormers
Combining a main roof dormer with a rear extension dormer, creating an L-shape that maximizes space in properties with extensions.
Starting from £60,000
Learn MoreWhy Choose a Loft Conversion?
A loft conversion is one of the most cost-effective ways to add valuable living space to your home without sacrificing garden space.
Add Up to 30% to Your Property Value
A well-designed loft conversion can significantly increase your home's market value, making it a smart investment.
Gain 30% More Living Space
Convert your unused attic into valuable living space without extending your property's footprint or sacrificing garden area.
Often No Planning Permission Required
Many loft conversions fall under Permitted Development rights, meaning you can avoid the planning application process.
Improved Natural Light
Skylights and dormer windows bring abundant natural light into your home, creating bright, airy spaces.
Faster Completion Time
Loft conversions typically take 8-12 weeks, much faster than traditional extensions or moving home.
Our Loft Conversion Process
We follow a streamlined process to ensure your loft conversion is completed efficiently, on time, and to the highest standards.
Initial Consultation
We assess your loft space and discuss your requirements and budget.
1-2 weeks
Design & Planning
Our architects create detailed plans and 3D visualizations of your loft.
2-3 weeks
Approvals
We handle planning permissions and building regulations approval.
4-8 weeks
Construction
Our skilled team executes the project with regular progress updates.
8-12 weeks
Final Inspection
We conduct a thorough inspection and walkthrough before handover.
1 week
Our Loft Conversion Projects
Browse our portfolio of recently completed loft conversions across London.
Before & After Transformations
Chelsea Loft Conversion
Transformation of an attic into a luxury master suite with ensuite bathroom and built-in storage.
Islington Home Office Loft
A hip to gable conversion creating a spacious home office with built-in storage and excellent natural light.
Kensington Mansard Conversion
A full mansard conversion of a period townhouse, creating two additional bedrooms and a bathroom.
Loft Conversion Pricing Guide
We believe in complete transparency with our pricing. Below are starting prices for our most popular loft conversion types.
Dormer Conversion
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Maximum headroom and floor space
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Suitable for most property types
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Typically permitted development
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8-10 weeks completion time
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Structural calculations included
Hip to Gable
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Ideal for end-terrace/semi-detached
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Maximizes space in sloped roofs
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Can be combined with rear dormer
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10-12 weeks completion time
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Planning application assistance
Mansard Conversion
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Maximum space creation
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Perfect for period properties
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Planning permission required
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12-14 weeks completion time
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Full architectural services
What's Included in Our Loft Conversions
Design & Planning
- Architectural drawings
- Structural calculations
- Planning applications
- Building regulations
Construction
- Structural alterations
- New floor joists
- Insulation
- Plasterboard & skimming
- Windows & skylights
Finishing
- Electrical installation
- Plumbing & heating
- Staircase installation
- Flooring
- Painting & decorating
All prices are starting points and will vary based on the specific requirements of your project. Contact us for a personalized quote.
Frequently Asked Questions
Find answers to common questions about our loft conversion services.
Do I need planning permission for a loft conversion?
Many loft conversions fall under Permitted Development rights, which means you don't need planning permission. This typically applies to dormer conversions that don't alter the roof height and meet certain criteria. However, if you live in a conservation area, listed building, or plan a mansard conversion, planning permission will likely be required. During our initial consultation, we'll assess your specific situation and advise accordingly.
How long does a loft conversion take?
The duration depends on the type and complexity of your loft conversion:
- Dormer conversions: 8-10 weeks
- Hip to gable conversions: 10-12 weeks
- Mansard conversions: 12-14 weeks
- L-shaped dormers: 10-12 weeks
These timeframes include all construction work but exclude the planning and design phase, which typically takes 4-8 weeks depending on whether planning permission is required.
Is my loft suitable for conversion?
Most lofts are suitable for conversion, but there are a few key factors we assess:
- Head height: Ideally, you need at least 2.2m from floor to ceiling at the highest point
- Roof structure: Trussed roofs require more structural work than traditional rafter roofs
- Available space: We need enough floor space to create a functional room
- Access: There must be space to install a staircase
Even if your loft doesn't meet all these criteria, solutions are often available. We offer free initial assessments to determine suitability.
Can I stay in my home during the conversion?
Yes, most homeowners remain in their property during loft conversions. The majority of the work is contained to the loft space and roof, with minimal disruption to the rest of your home. The most disruptive phase is when we create the opening for the staircase and connect it to your existing landing, which typically takes 2-3 days. We always aim to minimize disruption and will discuss the process in detail before work begins.
What warranties do you provide?
We provide a comprehensive 10-year structural warranty on all our loft conversions, giving you complete peace of mind. Additionally, we offer a 2-year warranty on all installations and finishes. All materials and products used (such as windows, bathroom fixtures, etc.) come with their own manufacturer warranties, which we'll pass on to you. Our warranty terms are detailed in our contract, and we're committed to addressing any issues promptly.
Ready to Transform Your Loft?
Contact us today for a free, no-obligation quote on your loft conversion project.
Get a Free Loft Conversion Quote
Fill out the form below, and our team will get back to you within 24 hours with a personalized quote for your loft conversion project.
Contact Information
Office Address
125 Kensington High Street, London, W8 5SF
Phone
+44 (0) 20 7123 4567
info@in-construct.co.uk
Business Hours
Monday - Friday: 8:30 AM - 5:30 PM
Saturday: 9:00 AM - 1:00 PM
Service Areas
We provide loft conversion services throughout London, including: