✓ Verified Google reviews·✓ Reviewed regularly·✓ Updated 29 May 2026
Written by Mark Reid,
Trades Editor ·Verified 29 May 2026
Southampton's housing stock is genuinely varied, and that keeps local builders busy with a wide range of work. The city has a strong mix of Victorian terraced houses, post-war semis, and more recent estate builds, particularly out towards Hedge End, Totton, and West End. That variety means builders here regularly deal with everything from underpinning older foundations on clay-heavy ground to adding extensions onto 1970s properties with cavity walls that don't always behave predictably. The proximity to the Solent also matters: coastal air accelerates weathering on render, brickwork, and timber frames, so maintenance cycles are often shorter than they'd be further inland. If you're in a conservation area, such as parts of the old town or around Bitterne Park, you'll also need a builder who understands the restrictions on materials and methods before work starts.
The businesses on this page are drawn from third-party business listings and ranked by public review rating and review count, with a small lift given to those that show a working website and phone number. We also check each business's homepage to confirm that builders work is what they primarily offer, which is how unrelated trades get kept off the page. Any listing flagged as permanently closed is removed automatically. Where you see a Trust Verified badge next to a business, that means they've additionally passed our full verification process, covering trade qualifications and accreditations, public liability insurance, trading history, customer review history, and registered company information. Visit our How We Verify page for the full list of what that involves. Businesses without that badge haven't been independently verified by us, and you should carry out your own checks before booking.
Before you commit to any builder, get at least three written quotes that break down labour and materials separately. Ask specifically about structural work: if the job involves removing a load-bearing wall, you'll want evidence that they work with a structural engineer and can provide the relevant calculations. Check whether planning permission or building regulations approval is needed, and confirm who's responsible for submitting those applications. Ask to see public liability insurance documentation, not just a verbal assurance. For larger projects, a stage payment schedule tied to agreed milestones is far more sensible than paying a large sum upfront. And if a quote comes in dramatically lower than the others, find out why before you sign anything.
How We Select & Rate The Best Builders in Southampton
Rankings on this page are driven by public review rating and review count, pulled from third-party business listings, with a small lift applied to businesses that have a working website and phone number. We check each business's homepage to confirm that builders work is what they primarily offer, which keeps unrelated trades off the page. Permanently-closed listings are removed automatically. Businesses marked Trust Verified have additionally passed our full verification, covering qualifications, insurance, trading history, customer review history, and registered company information. See our How We Verify page for the full list. All other businesses on this page have not been independently verified by us, and inclusion is not an endorsement. Always do your own checks before hiring.
Positions 1–5 (Recommended and Featured) may be paid placements. Every other listing is ranked on rating and review count from third-party business listings. How we rank & verify →
G.M.P Contractors Limited provides comprehensive building services to clients across Southampton and the SO17 area. The company has earned a perfect 5-star rating from 19 verified Google reviews, reflecting their commitment to quality workmanship and customer satisfaction. Based on Broadlands Road, they handle a range of construction and building projects for residential and commercial properties.
Structural Repairs Ltd is a Southampton building firm specialising in structural remediation and repair work. Operating from SO19, the company holds a 4.7 Google rating across 26 reviews, reflecting consistent standards on residential and commercial projects. Its focused scope sets it apart from general builders, making it a practical choice for clients dealing with structural defects or deterioration.
Covering extensions, renovations, and new builds, AOM Building Contractors Ltd operates out of Southampton's SO18 area and holds a perfect five-star rating across 13 Google reviews. The company works on both residential and commercial projects, offering a range of general building services to clients across the city and surrounding areas.
Maidanbuild Homes is a construction company providing building services throughout Southampton and the surrounding areas. Based on Ocean Way, the firm has earned a 5-star rating from 10 verified customer reviews, reflecting their commitment to quality workmanship. They serve clients across the SO14 postcode area and beyond, handling various residential and commercial building projects.
A building contractor serving Southampton and the surrounding area, White Build covers residential construction and general building work. The company holds a perfect five-star rating across its Google reviews, suggesting consistent workmanship and straightforward client communication. It operates as a local outfit rather than a large firm, which suits homeowners looking for direct contact with the people carrying out the work.
Home Building Renovations Ltd provides comprehensive building and renovation services throughout Southampton. The company has earned a perfect 5-star rating from 6 verified customer reviews on Google. Their experienced team handles various construction projects, from home extensions to complete property refurbishments for residential clients in the area.
Spitfire Ceilings Ltd provides professional building services from their base on Burgess Road in Southampton. The company serves the SO16 area and surrounding neighbourhoods with reliable construction work. With a perfect 5-star rating from 6 verified customer reviews, they have established a strong reputation for quality workmanship in the local community.
Greaves Brickwork & Construction Ltd provides building and brickwork services throughout Southampton from their SO16 base. The company has earned a 5-star rating from 6 verified customer reviews on Google. Their services cover general construction work and specialist brickwork projects for residential and commercial clients in the Southampton area.
Waterside Installations Ltd operates as a building contractor from their base at Carlton Commerce Centre in Southampton SO14. The company maintains a perfect 5-star Google rating based on 3 verified customer reviews, reflecting their commitment to quality workmanship. They serve the Southampton area with professional building services for both residential and commercial clients.
Transparency notice: Recommended (#1) and Featured (positions 2-5) listings may be paid placements, so a business's fee affects whether and where it appears in those positions. All other listings are ranked by a combined score drawn from ratings and review counts published on third-party business listings, plus basic completeness signals such as a working website and phone. A Trust Verified badge means we have independently checked that business's documents; businesses without it have not been independently verified by us. How we verify →
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Day rates for qualified builders in Southampton typically range from £200-350, depending on specialisation and experience. Small jobs like partition walls might cost £800-1,500, whilst single-storey extensions start around £15,000-25,000. Loft conversions often run £20,000-40,000, and full house renovations can reach £50,000-100,000 or more. Prices vary based on materials chosen, access difficulties, and whether structural work's involved. Always get two or three detailed quotes to compare.
Do I need planning permission for building work in Southampton?
Many smaller projects fall under permitted development rights, including single-storey rear extensions up to 6 metres for terraced houses or 8 metres for detached properties. However, Southampton has numerous conservation areas where stricter rules apply, and some developments require full planning permission. Your builder should advise on requirements, but you can also check with Southampton City Council's planning department. Building regulations approval is separate and needed for most structural work.
How long do typical building projects take in Southampton?
Small bathroom renovations usually take 1-2 weeks, kitchen refits 2-3 weeks, and single-storey extensions 6-10 weeks depending on complexity. Loft conversions often need 4-6 weeks, whilst whole house renovations can take several months. Weather, material deliveries, and council inspections affect timing. Good builders build contingency time into their schedules and keep you updated on progress.
What insurance should my builder have?
Your builder needs public liability insurance covering at least £2 million for property damage or injury claims. Employers' liability insurance is required if they have staff. Some also carry professional indemnity insurance for design work. Always ask to see current certificates before work starts. If they're doing major structural work, check they're covered for that specific type of project.
Can builders help with building regulations in Southampton?
Experienced builders understand building regulations and often handle applications on your behalf, though you remain legally responsible as the homeowner. They'll coordinate inspections with Southampton City Council's building control team at key stages like foundations, roof work, and completion. Some builders work with approved inspectors as an alternative to council building control. Factor £500-1,500 into your budget for building regulations fees.
How do I verify a builder's credentials and reputation?
Check their Google reviews for patterns over time, not just star ratings. Ask for recent local references and actually contact previous customers. Verify they're registered with Companies House if they're a limited company. Look for trade body memberships like FMB or NHBC. Check their insurance certificates are current and adequate. Visit current job sites if possible to see work quality and site management standards.
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