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Builders in London
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Get in touch for a free no obligation quote today on your dream loft conversion...
We’re a London-based Loft Conversion construction company specialising in design-led, bespoke, high-end homes for our clients
Discover Your Dream Loft:
Transform your loft into the space you've always dreamed of. We offer a variety of conversion styles to fit any goal and budget.
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Velux/Roof Light Conversion
A simple and cost-effective option that uses strategically placed skylights to bring light and ventilation into the loft space. This typically doesn't require major structural changes but may have limitations on headroom and floor space.
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Luxury Dormer Loft Conversion
A popular choice that involves adding a box-shaped extension with windows (dormers) that protrude from the existing roof slope. This creates more headroom and usable floor space compared to a Velux conversion.
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L-Shaped Dormer Loft Conversion
A variation of the dormer loft, incorporating dormers on two sides of the roof for additional light and maximizing available space.
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Hip to Gable Loft Conversion
This option involves completely transforming a hipped roof (sloping on all sides) into a gable roof (with a vertical wall at each end). This creates a more spacious and versatile loft area but can be more expensive due to the significant structural changes required.
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Mansard Loft Conversion
A complex and architecturally striking conversion that adds a raised section with a steeper roof pitch on the existing roof. This maximizes space but comes with a hefty price tag and may require planning permission approval.
Building Regulations for a Smooth Loft Conversion
Building regulations ensure your loft conversion is safe and meets specific standards. Here's what you need to know:
Approval Process: You'll need an approved inspector or local building control to assess your project, including the room and staircase.
Structural Engineer: A structural engineer will provide crucial calculations for your project.
Building Regulations Package: This comprehensive package provides detailed plans for your contractor to fulfill building regulations.
The package typically covers aspects like:
Structure
Fire Safety
Site preparation and resistance to contaminants and moisture
Ventilation
Drainage and waste disposal
Combustion appliances and fuel storage systems
Protection from falling, collision and impact
Access to and use of buildings
Electrical safety in dwellings
How much does a loft conversions cost?
The price of your loft conversion can vary depending on your vision and location. Here's a breakdown to help you estimate:
Project Type: A simple skylight conversion can start around £25,000, while a complex hip-to-gable with dormer extension can reach up to £200,000.
Location: Costs can differ across the UK.
Quality: High-quality materials and services will naturally cost more.
Budgeting for Success:
As a general guide, consider a budget between £55,000 and £80,000. Remember, this is just an estimate. For a more accurate idea, consult with qualified professionals who can assess your specific project.
We don't just build lofts, we build dreams. Together, let's create a unique and affordable conversion that transforms your house into your dream home.
We’ve built our business on recommendations
from loyal clients…
Why choose us
✔️ A dedicated Account Manager to help you through the process
✔️ Keep your project on time & budget
✔️ Qualified and experienced team
☎️ Speak to an expert
Still not sure? Book a free 30-minute phone consultation and see how your project can come to life with Mammoth Design and Build.
E: hello@mammoth-builds.co.uk
M: 07878 719 909
