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Loft Conversions & Extensions in Southampton

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

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12 Greater Southampton Districts
Quick Postal District Navigator: ● Showing All Districts
All Areas SO14 (52) SO15 (82) SO16 (79) SO17 (4) SO18 (61) SO19 (78) SO30 (112) SO31 (113) SO40 (144) SO45 (86) SO50 (158) SO53 (105)
Official Municipal Planning & Building Control Guidance

Planning Permission & Building Regs in Southampton

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

Dormer volume max 40m³ (terraced) or 50m³ (semi/detached).

Article 4 Directions & Conservation Zones

Conservation areas in Southampton require adherence to statutory Article 4 guidelines.

Key Protected Zones: Southampton Central Heritage Area (15 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 26–36 of 36 verified loft conversions & extensions in Greater Southampton
Pople Roofing

Pople Roofing

Verified Local Listing
★ 4.80 (54 reviews)
• Base: SO50 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions Roofers & Guttering
07713 415414 View Profile & Reviews
MDT Design

MDT Design

Verified Local Listing
★ 4.70 (58 reviews)
• Base: SO50 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
07881 587261 View Profile & Reviews
1MoreRoom.co.uk

1MoreRoom.co.uk

Verified Local Listing
★ 4.50 (6 reviews)
• Base: SO45 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
023 8184 2389 View Profile & Reviews
Caws Carpentry & Building LTD

Caws Carpentry & Building LTD

Verified Local Listing 24/7 Callout
★ 4.50 (2 reviews)
• Base: SO30 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions Joiners & Carpenters
023 8047 1052 View Profile & Reviews
D C Builders Southern

D C Builders Southern

Verified Local Listing
★ 4.40 (20 reviews)
• Base: SO40 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions Builders & Bricklayers
023 8036 6963 View Profile & Reviews
TMA Building Services

TMA Building Services

Verified Local Listing
★ 4.30 (6 reviews)
• Base: SO50 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
023 8061 1842 View Profile & Reviews
Heritage Construction

Heritage Construction

Verified Local Listing
★ 3.70 (3 reviews)
• Base: SO40 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
023 8086 3393 View Profile & Reviews
Silhouette building group

Silhouette building group

Verified Local Listing
★ 3.70 (3 reviews)
• Base: SO40 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
0100 000 0000 View Profile & Reviews
Mike Jacobs Builders Ltd

Mike Jacobs Builders Ltd

Verified Local Listing
★ 3.60 (5 reviews)
• Base: SO50 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions Builders & Bricklayers
023 8061 1515 View Profile & Reviews
Cavetto Construction Hampshire Limited

Cavetto Construction Hampshire Limited

Verified Local Listing
★ 3.00 (8 reviews)
• Base: SO14 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
07771 966721 View Profile & Reviews
Extension Designs Building Plans Ltd

Extension Designs Building Plans Ltd

Verified Local Listing
★ 3.00 (4 reviews)
• Base: SO45 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
023 8084 0635 View Profile & Reviews

Local Housing & Property Considerations in Southampton

Diverse British housing stock from Victorian brick terraces to contemporary suburban developments. When commissioning work in Southampton, 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 Southampton

How much does a Loft-conversions cost per hour in Southampton?
In Southampton, 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 Southampton?
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 Southampton on HireSouthampton?
We currently index 36 vetted Loft-conversions operating across Southampton and surrounding postal districts, maintaining an average customer satisfaction rating of 4.9★ based on 150 verified Google reviews.
Are quotes free, and do Loft-conversions in Southampton charge a call-out fee?
Most reputable Loft-conversions in Southampton 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.