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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 (113) 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 1–25 of 36 verified loft conversions & extensions in Greater Southampton
S&D Brickwork Ltd

S&D Brickwork Ltd

Verified Local Listing
★ 5.00 (39 reviews)
• Base: SO15 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions Builders & Bricklayers
023 8218 0364 View Profile & Reviews
Richard Saunders Building Ltd - Chandlers Ford, Winchester

Richard Saunders Building Ltd - Chandlers Ford, Winchester

Verified Local Listing
★ 5.00 (39 reviews)
• Base: SO53 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions Builders & Bricklayers
07459 307909 View Profile & Reviews
PCD Building & Property Development

PCD Building & Property Development

Verified Local Listing
★ 5.00 (18 reviews)
• Base: SO30 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
023 8110 3132 View Profile & Reviews
Bassett Carpentry Ltd

Bassett Carpentry Ltd

Verified Local Listing
★ 5.00 (17 reviews)
• Base: SO16 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions Joiners & Carpenters
07795 285495 View Profile & Reviews
AJN BUILDING SERVICES

AJN BUILDING SERVICES

Verified Local Listing
★ 5.00 (14 reviews)
• Base: SO50 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions Joiners & Carpenters
07713 962902 View Profile & Reviews
Manor Developments (Hampshire)

Manor Developments (Hampshire)

Verified Local Listing
★ 5.00 (11 reviews)
• Base: SO53 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
07792 445058 View Profile & Reviews
BM carpentry and building

BM carpentry and building

Verified Local Listing
★ 5.00 (10 reviews)
• Base: SO18 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions Joiners & Carpenters
07984 969199 View Profile & Reviews
TW Builders

TW Builders

Verified Local Listing
★ 5.00 (7 reviews)
• Base: SO19 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
07770 395026 View Profile & Reviews
Hedge End Builders Ltd

Hedge End Builders Ltd

Verified Local Listing
★ 5.00 (7 reviews)
• Base: SO30 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions Builders & Bricklayers
01489 789991 View Profile & Reviews
MS Projects LTD

MS Projects LTD

Verified Local Listing
★ 5.00 (7 reviews)
• Base: SO30 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions Garage Doors & Automation
0845 644 0355 View Profile & Reviews
Infinity Building Projects

Infinity Building Projects

Verified Local Listing
★ 5.00 (7 reviews)
• Base: SO53 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
07920 144372 View Profile & Reviews
HE Building & Interior Services

HE Building & Interior Services

Verified Local Listing 24/7 Callout
★ 5.00 (4 reviews)
• Base: SO30 • 5 yrs exp • Quotes on Request
Groundworks & Excavations Loft Conversions & Extensions Bathroom & Kitchen Fitters
07802 647565 View Profile & Reviews
Truespace Contractors

Truespace Contractors

Verified Local Listing
★ 5.00 (4 reviews)
• Base: SO50 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
07715 824264 View Profile & Reviews
ASC Loft Conversions & Carpentry

ASC Loft Conversions & Carpentry

Verified Local Listing
★ 5.00 (3 reviews)
• Base: SO30 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
023 8212 2898 View Profile & Reviews
Smith's Carpentry & Building LTD

Smith's Carpentry & Building LTD

Verified Local Listing
★ 5.00 (1 reviews)
• Base: SO31 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions Joiners & Carpenters
07811 739913 View Profile & Reviews
Heathermount Construction

Heathermount Construction

Verified Local Listing
★ 5.00 (1 reviews)
• Base: SO40 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
07921 719622 View Profile & Reviews
Acorn Building Contracts Ltd

Acorn Building Contracts Ltd

Verified Local Listing
★ 5.00 (1 reviews)
• Base: SO40 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
023 8024 3336 View Profile & Reviews
Staplewood Construction Ltd

Staplewood Construction Ltd

Verified Local Listing
★ 5.00 (1 reviews)
• Base: SO40 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
07718 206198 View Profile & Reviews
Ant Construction

Ant Construction

Verified Local Listing
★ 5.00 (1 reviews)
• Base: SO50 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
023 8212 7840 View Profile & Reviews
New Forest Developments Ltd

New Forest Developments Ltd

Verified Local Listing
★ 5.00 (1 reviews)
• Base: SO53 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
07739 689118 View Profile & Reviews
BMS House Conversions LTD

BMS House Conversions LTD

Verified Local Listing 24/7 Callout
★ 5.00 (0 reviews)
• Base: SO19 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions
07703 599133 View Profile & Reviews
Hampshire Roofing Specialists

Hampshire Roofing Specialists

Verified Local Listing
★ 4.90 (103 reviews)
• Base: SO50 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions Roofers & Guttering
07742 233514 View Profile & Reviews
MJH Builders Hampshire Limited

MJH Builders Hampshire Limited

Verified Local Listing
★ 4.90 (54 reviews)
• Base: SO50 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions Bathroom & Kitchen Fitters Builders & Bricklayers
07891 638636 View Profile & Reviews
Simple Design Services Partnership

Simple Design Services Partnership

Verified Local Listing
★ 4.90 (41 reviews)
• Base: SO31 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions Architects & Surveyors
01489 572953 View Profile & Reviews
AOM Building Contractors Ltd

AOM Building Contractors Ltd

Verified Local Listing
★ 4.90 (14 reviews)
• Base: SO18 • 5 yrs exp • Quotes on Request
Loft Conversions & Extensions Builders & Bricklayers
07496 539173 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.