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Loft Conversions & Extensions in London

Dormer, hip-to-gable, mansard, and Velux loft conversions, attic room renovations, and turnkey structural alterations.

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72 Greater London Districts
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Official Municipal Planning & Building Control Guidance

Planning Permission & Building Regs in London

Statutory local guidelines for Loft Conversions & Extensions under London City Council
London City Council Planning Portal Building Control
Permitted Development & Statutory Standards

Rear dormer loft additions permitted up to 40m³ (terraced) or 50m³ (semi-detached) under Class B. Materials must match existing finishes.

Article 4 Directions & Conservation Zones

Designated conservation areas across London require adherence to statutory Article 4 directions. Property owners must preserve original architectural profiles and consult the local planning register before altering highway-facing elevations.

Key Protected Zones: London Historic Core, Cathedral Quarter, Heritage Suburbs (20 designated areas).
Verified by Editorial Desk (Sep 2026) Request Council-Compliant Quote →
Dormer Loft Conversion Architectural Cross-Section Technical CAD Blueprint

Dormer Loft Conversion Architectural Cross-Section

Permitted development cubic volume allowance: 40m³ (terraced) / 50m³ (semi/detached) with RSJ structural steel placement.

Reference: Approved Document B (Fire Safety) & Class B Permitted Development
Showing 1–25 of 124 verified loft conversions & extensions in Greater London
My Extension PM Limited

My Extension PM Limited

Verified Local Listing
★ 5.00 (100 reviews)
• Base: SW19 • Quotes on Request
Loft Conversions & Extensions
0800 002 9540 View Profile & Reviews
Clapham Construction Service

Clapham Construction Service

Verified Local Listing
★ 5.00 (86 reviews)
• Base: SW11 • Quotes on Request
Groundworks & Excavations Loft Conversions & Extensions
020 3950 7957 View Profile & Reviews
Forest Lofts Ltd

Forest Lofts Ltd

Verified Local Listing
★ 5.00 (50 reviews)
• Base: E17 • Quotes on Request
Loft Conversions & Extensions
020 8711 1483 View Profile & Reviews
IFA Construction LTD

IFA Construction LTD

Verified Local Listing
★ 5.00 (39 reviews)
• Base: SW1 • Quotes on Request
Loft Conversions & Extensions
07463 740312 View Profile & Reviews
JRO Electrics - Electrician London - EICR & PAT Testing

JRO Electrics - Electrician London - EICR & PAT Testing

Verified Local Listing
★ 5.00 (33 reviews)
• Base: SW15 • Quotes on Request
Loft Conversions & Extensions Electricians
07494 124758 View Profile & Reviews
Ajsli Construction

Ajsli Construction

Verified Local Listing
★ 5.00 (32 reviews)
• Base: N10 • Quotes on Request
Loft Conversions & Extensions Plasterers & Renderers
07472 194854 View Profile & Reviews
Luxurious Constructions Ltd

Luxurious Constructions Ltd

Verified Local Listing
★ 5.00 (31 reviews)
• Base: NW2 • Quotes on Request
Loft Conversions & Extensions
07836 699933 View Profile & Reviews
LCL Loft Conversion

LCL Loft Conversion

Verified Local Listing
★ 5.00 (30 reviews)
• Base: W1 • Quotes on Request
Loft Conversions & Extensions
07418 355673 View Profile & Reviews
Lulja Roofing Ltd

Lulja Roofing Ltd

Verified Local Listing
★ 5.00 (30 reviews)
• Base: E14 • Quotes on Request
Loft Conversions & Extensions Roofers & Guttering
07990 271003 View Profile & Reviews
London's Prestige Ltd

London's Prestige Ltd

Verified Local Listing
★ 5.00 (30 reviews)
• Base: NW6 • Quotes on Request
Loft Conversions & Extensions Bathroom & Kitchen Fitters
020 3576 7307 View Profile & Reviews
Prestige Build and Management Limited

Prestige Build and Management Limited

Verified Local Listing
★ 5.00 (29 reviews)
• Base: W1 • Quotes on Request
Loft Conversions & Extensions
0800 420181 View Profile & Reviews
NW London Basement Company

NW London Basement Company

Verified Local Listing
★ 5.00 (28 reviews)
• Base: NW2 • Quotes on Request
Groundworks & Excavations Loft Conversions & Extensions
07451 267826 View Profile & Reviews
St Johns Carpenters

St Johns Carpenters

Verified Local Listing
★ 5.00 (27 reviews)
• Base: SW18 • Quotes on Request
Loft Conversions & Extensions Builders & Bricklayers Joiners & Carpenters
07455 200145 View Profile & Reviews
The London House Extensions

The London House Extensions

Verified Local Listing
★ 5.00 (26 reviews)
• Base: W2 • Quotes on Request
Loft Conversions & Extensions
07441 427479 View Profile & Reviews
Structural Build Engineering

Structural Build Engineering

Verified Local Listing
★ 5.00 (24 reviews)
• Base: NW10 • Quotes on Request
Loft Conversions & Extensions
020 3873 9718 View Profile & Reviews
QualityBuild Hackney House Extensions

QualityBuild Hackney House Extensions

Verified Local Listing
★ 5.00 (23 reviews)
• Base: E9 • Quotes on Request
Loft Conversions & Extensions
07441 429080 View Profile & Reviews
Benchmark Lofts

Benchmark Lofts

Verified Local Listing
★ 5.00 (22 reviews)
• Base: SE15 • Quotes on Request
Loft Conversions & Extensions
020 7438 2043 View Profile & Reviews
Top Division Lofts

Top Division Lofts

Verified Local Listing
★ 5.00 (22 reviews)
• Base: NW10 • Quotes on Request
Loft Conversions & Extensions
020 7164 6473 View Profile & Reviews
MAC Building Solutions Ltd

MAC Building Solutions Ltd

Verified Local Listing
★ 5.00 (21 reviews)
• Base: SW11 • Quotes on Request
Loft Conversions & Extensions
020 3457 7511 View Profile & Reviews
Greater Space Extensions Ltd

Greater Space Extensions Ltd

Verified Local Listing
★ 5.00 (21 reviews)
• Base: SW16 • Quotes on Request
Loft Conversions & Extensions
020 3151 3945 View Profile & Reviews
BM Lofts Ltd

BM Lofts Ltd

Verified Local Listing
★ 5.00 (21 reviews)
• Base: N4 • Quotes on Request
Loft Conversions & Extensions
07467 637100 View Profile & Reviews
GLS Building Contractors Ltd

GLS Building Contractors Ltd

Verified Local Listing
★ 5.00 (20 reviews)
• Base: W5 • Quotes on Request
Loft Conversions & Extensions Builders & Bricklayers
07878 660706 View Profile & Reviews
The Kitchen and Loft Company Ltd

The Kitchen and Loft Company Ltd

Verified Local Listing
★ 5.00 (19 reviews)
• Base: W12 • Quotes on Request
Loft Conversions & Extensions
0800 046 7268 View Profile & Reviews
Plum & Bros Lofts Ltd

Plum & Bros Lofts Ltd

Verified Local Listing
★ 5.00 (19 reviews)
• Base: NW6 • Quotes on Request
Loft Conversions & Extensions
07915 635702 View Profile & Reviews
3D Design and Build Ltd

3D Design and Build Ltd

Verified Local Listing
★ 5.00 (17 reviews)
• Base: SW19 • Quotes on Request
Loft Conversions & Extensions
07881 883890 View Profile & Reviews

Local Housing & Property Considerations in London

Georgian squares, London stock yellow-brick Victorian terraces, and modern high-rise developments; ultra-low emission zone (ULEZ) and parking logistics. When commissioning work in London, always ensure your tradesperson has direct experience with local building styles, planning regulations, and regional conservation guidelines.

Common Questions & Answers

Frequently Asked Questions About Loft Conversions & Extensions in London

How much does a Loft-conversions cost per hour in London?
In London, a qualified Loft-conversions typically charges between £45 – £75 per hour, or £280 – £450 for a full working day. Rates vary depending on emergency callouts, required materials, and project complexity.
What credentials or certifications should I check for a Loft-conversions in London?
Always verify that your Loft-conversions is accredited by competent person schemes. For gas or heating work, registration with the Gas Safe Register is a legal requirement. Additionally, check for active Public Liability Insurance (minimum £2 million recommended).
How many verified Loft-conversions are available in London on HireLondon?
We currently index 124 screened Loft-conversions operating across London and surrounding postal districts, maintaining an average customer satisfaction rating of 4.8★ based on 3,540 authentic customer reviews via Google.
Are quotes free, and do Loft-conversions in London charge a call-out fee?
Most reputable Loft-conversions in London provide free, no-obligation written quotes for scheduled home improvement projects. For emergency out-of-hours callouts (evenings/weekends), a minimum call-out charge of 1 hour is standard.