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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 101–124 of 124 verified loft conversions & extensions in Greater London
Extendia

Extendia

Verified Local Listing
★ 4.70 (15 reviews)
• Base: W6 • Quotes on Request
Loft Conversions & Extensions
020 3916 5670 View Profile & Reviews
Inspire Construction Solution

Inspire Construction Solution

Verified Local Listing
★ 4.70 (14 reviews)
• Base: SE4 • Quotes on Request
Loft Conversions & Extensions
020 3565 9775 View Profile & Reviews
Extension Architecture

Extension Architecture

Verified Local Listing
★ 4.60 (104 reviews)
• Base: SW15 • Quotes on Request
Loft Conversions & Extensions Architects & Surveyors
020 3409 4215 View Profile & Reviews
Charles Henderson Construction

Charles Henderson Construction

Verified Local Listing
★ 4.60 (33 reviews)
• Base: NW10 • Quotes on Request
Loft Conversions & Extensions Builders & Bricklayers
020 8830 2028 View Profile & Reviews
The London Kitchen Extensions

The London Kitchen Extensions

Verified Local Listing
★ 4.60 (22 reviews)
• Base: SW16 • Quotes on Request
Loft Conversions & Extensions
020 8672 5200 View Profile & Reviews
Bluelime Conversions Ltd

Bluelime Conversions Ltd

Verified Local Listing
★ 4.60 (19 reviews)
• Base: NW1 • Quotes on Request
Loft Conversions & Extensions
0844 800 5711 View Profile & Reviews
The London Building company

The London Building company

Verified Local Listing
★ 4.60 (10 reviews)
• Base: SE3 • Quotes on Request
Loft Conversions & Extensions Builders & Bricklayers
07867 924183 View Profile & Reviews
LC Renovation

LC Renovation

Verified Local Listing
★ 4.60 (9 reviews)
• Base: SE5 • Quotes on Request
Loft Conversions & Extensions Bathroom & Kitchen Fitters
020 7118 5155 View Profile & Reviews
DBCKG LTD

DBCKG LTD

Verified Local Listing
★ 4.60 (8 reviews)
• Base: N10 • Quotes on Request
Groundworks & Excavations Loft Conversions & Extensions Builders & Bricklayers
020 8922 4432 View Profile & Reviews
Ash Island

Ash Island

Verified Local Listing
★ 4.50 (34 reviews)
• Base: W4 • Quotes on Request
Loft Conversions & Extensions
020 8166 5145 View Profile & Reviews
Classic Lofts London Ltd.

Classic Lofts London Ltd.

Verified Local Listing
★ 4.50 (34 reviews)
• Base: SE22 • Quotes on Request
Loft Conversions & Extensions
020 8693 0302 View Profile & Reviews
Riverside Lofts and Extensions

Riverside Lofts and Extensions

Verified Local Listing
★ 4.50 (8 reviews)
• Base: SW11 • Quotes on Request
Loft Conversions & Extensions
07796 244289 View Profile & Reviews
RQ Builders Ltd

RQ Builders Ltd

Verified Local Listing
★ 4.50 (6 reviews)
• Base: SW15 • Quotes on Request
Loft Conversions & Extensions
020 3996 9846 View Profile & Reviews
Build Team

Build Team

Verified Local Listing
★ 4.40 (238 reviews)
• Base: SW9 • Quotes on Request
Groundworks & Excavations Loft Conversions & Extensions Builders & Bricklayers
020 7495 6561 View Profile & Reviews
South London Lofts Ltd

South London Lofts Ltd

Verified Local Listing
★ 4.30 (97 reviews)
• Base: SW12 • Quotes on Request
Loft Conversions & Extensions
020 8673 4114 View Profile & Reviews
Good Design & Build

Good Design & Build

Verified Local Listing
★ 4.30 (60 reviews)
• Base: W4 • Quotes on Request
Loft Conversions & Extensions
020 3763 8603 View Profile & Reviews
Build & Create Construction Ltd

Build & Create Construction Ltd

Verified Local Listing
★ 4.30 (12 reviews)
• Base: SE3 • Quotes on Request
Loft Conversions & Extensions
020 8305 2184 View Profile & Reviews
On Flow Constructions pvt Ltd

On Flow Constructions pvt Ltd

Verified Local Listing
★ 4.30 (6 reviews)
• Base: NW10 • Quotes on Request
Loft Conversions & Extensions
0333 335 6466 View Profile & Reviews
Total Lofts

Total Lofts

Verified Local Listing
★ 4.00 (3 reviews)
• Base: SW17 • Quotes on Request
Loft Conversions & Extensions
020 7450 1444 View Profile & Reviews
SMA Lofts & Extensions Ltd

SMA Lofts & Extensions Ltd

Verified Local Listing
★ 3.90 (11 reviews)
• Base: W5 • Quotes on Request
Loft Conversions & Extensions
07795 927285 View Profile & Reviews
Lshapeextension.Ltd

Lshapeextension.Ltd

Verified Local Listing 24/7 Callout
★ 3.60 (19 reviews)
• Base: N1 • Quotes on Request
Loft Conversions & Extensions
07738 520208 View Profile & Reviews
Rapid Lofts Ltd

Rapid Lofts Ltd

Verified Local Listing
★ 3.00 (3 reviews)
• Base: E17 • Quotes on Request
Loft Conversions & Extensions
07488 706771 View Profile & Reviews
45 Whitechapel Rd, London E1 1DU, UK

45 Whitechapel Rd, London E1 1DU, UK

Verified Local Listing 24/7 Callout
★ 2.30 (3 reviews)
• Base: E1 • Quotes on Request
Loft Conversions & Extensions
07380 503895 View Profile & Reviews
Gtf Builders Extensions & Loft Conversion

Gtf Builders Extensions & Loft Conversion

Verified Local Listing
★ 1.00 (1 reviews)
• Base: E17 • Quotes on Request
Loft Conversions & Extensions
020 8257 2133 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.