attic insulation in Greater London (346)
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Loft conversions in London
Planning a loft conversion in London? Whether you’re dreaming of a new bedroom, a home office, or just more space to breathe, we’re here to help.
Find rated loft conversion builders in London without the hassle
With Checkatrade, you can find checked loft conversion companies in London and get quotes from trades who cover your area, fast. No faff. Just a simple way to turn that empty attic into something brilliant.
Post your job in minutes or browse reviewed London loft conversion builders near you. It’s free to use, and you’re in control every step of the way.
What to expect from hiring a loft conversion builder in London
Loft conversions are one of the most popular ways to add space (and value) to a home. Here’s what you need to know:
Common loft conversion jobs in London
- Dormer loft conversions
- Hip-to-gable conversions
- Velux (rooflight) conversions
- Mansard conversions
- Bungalow loft extensions
Average cost of a loft conversion in London
Loft conversions:
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Loft ladder installers:
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Loft window installation:
Expect to pay [pricing[3].London.[Loft Windows Installation].[averagePriceFormatted]] on average, with prices typically starting at [pricing[3].London.[Loft Windows Installation].[lowPriceFormatted]] up to [pricing[3].London.[Loft Windows Installation].[highPriceFormatted]].
Roof light installation:
Expect to pay [pricing[4].London.[Roof Lights Installation].[averagePriceFormatted]] on average, with prices typically starting at [pricing[4].London.[Roof Lights Installation].[lowPriceFormatted]] up to [pricing[4].London.[Roof Lights Installation].[highPriceFormatted]].
Dormer windows:
Expect to pay [pricing[5].London.[Dormer / Roof Windows].[averagePriceFormatted]] on average, with prices typically starting at [pricing[5].London.[Dormer / Roof Windows].[lowPriceFormatted]] up to [pricing[5].London.[Dormer / Roof Windows].[highPriceFormatted]].
Explore our loft conversion cost guide for a detailed breakdown.
What’s included in a loft conversion quote?
- Design and structural plans
- Building work and insulation
- Stairs, electrics, plumbing
- Windows, flooring, and finishes
Extra costs to think about:
- Architect or structural engineer fees
- Planning permission (if required)
- Bathrooms or heating upgrades
- Underfloor heating or bespoke storage
How long does a loft conversion take?
Velux: 4 - 6 weeks
Dormer: 10 - 12 weeks
Mansard: 8 - 10 weeks
Loft conversions in London: Homeowners vs renters
If you own your home:
- You’re responsible for planning, permissions, and hiring.
- Check if you need planning permission; many lofts fall under permitted development, but not all.
- Building regulations always apply. A loft conversion without sign-off could cause issues later (including invalidating home insurance).
If you rent:
- You can’t carry out major work like a loft conversion.
- Speak to your landlord if you notice issues in the loft space (leaks, insulation problems etc.).
- If you spot an unregulated loft conversion, flag it with your landlord or letting agent.
Emergency loft conversion help in London
Need urgent loft work like a leak, collapsed ceiling, or unsafe structure? We’ve got you.
Search for emergency loft conversion services in London to find available trades fast.
Find a loft conversion builder for your job in London
Here are some common requests from homeowners and renters alike:
- Loft boarding or insulation
- Full loft extensions
- Velux or dormer installations
- Bungalow loft conversion design
- Loft conversion quotes
- Structural inspections or fixes
- Loft stairs installation
- Loft storage or lighting upgrades
- Fixing illegal or unregulated conversions
Use our request a quote feature; it’s a quick, easy way to get responses from loft builders covering your local area.
Looking for more tradespeople in London?
Find Checkatrade reviewed Tradespeople, get a quote today, discover related services in London and check out our latest home improvement guides.
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- attic insulation in London
- attic insulation in Newcastle Upon Tyne
- attic insulation in Manchester
- attic insulation in Liverpool
- attic insulation in Glasgow
- attic insulation in Nottingham
- attic insulation in Leeds
- attic insulation in Brighton
- attic insulation in York
- attic insulation in Birmingham
- attic insulation in Bristol
- attic insulation in Leicester
- Electrical Installation Condition Report Safety Checks Eicr in Greater London
- Plumbing Repairs in Greater London
- Gas Safety Checks Cp12 in Greater London
- Smart Thermostats in Greater London
- Shower Repair in Greater London
- Dormer Roof Windows in Greater London
- Gas Cooker Installation in Greater London
- Blocked Sinks in Greater London
- Cat Flaps in Greater London
- Air Source Heat Pump Servicing Repair Ashp in Greater London
- Moss Removal in Greater London
- Power Flushing in Greater London
- attic insulation in London
- attic insulation in Newcastle Upon Tyne
- attic insulation in Manchester
- attic insulation in Liverpool
- attic insulation in Glasgow
- attic insulation in Nottingham
- attic insulation in Leeds
- attic insulation in Brighton
- attic insulation in York
- attic insulation in Birmingham
- attic insulation in Bristol
- attic insulation in Leicester