22 Best Builders in Portsmouth for 2026

🏗️ 22 businesses · 📍 Portsmouth
✓ Reviewed regularly · ✓ Updated 12 September 2026
Mark Reid
Written by Mark Reid, Trades Editor · Verified 12 September 2026
Portsmouth's housing stock throws up a fair few challenges for builders. You've got dense Victorian terraces in Southsea with shared party walls and tight access, 1930s semis out towards Cosham and Drayton with solid brick construction, and newer builds around Port Solent and Gunwharf that come with their own quirks around modern insulation standards and building regs. Add in the fact that much of the city sits on reclaimed land or has a high water table near the coast, and things like damp-proofing, foundations and drainage need proper local knowledge rather than a generic approach. Whether it's a loft conversion in Fratton to squeeze out extra bedrooms, a rear extension in Copnor, or underpinning work on an older property near the seafront, the right builder will know how Portsmouth's terrain and terraced layouts affect the job.

The businesses featured here are pulled from public business listings and ranked mainly by review rating and how many reviews they've got, with a modest boost for those showing a working website and phone number. We also check each business's homepage to confirm building work is genuinely their main trade, which keeps plumbers, electricians and general handymen who dabble in building work off this particular list. Any listings that appear permanently closed get removed automatically. Where you spot a Trust Verified badge next to a business, that firm has gone through our fuller verification process, covering trade qualifications and accreditations, public liability insurance, trading history, customer review history and registered company information. You can find the full breakdown on our How We Verify page. For businesses without that badge, we'd suggest doing those checks yourself before you commit to anything.

Before signing off on a builder, ask to see their public liability insurance certificate and, if the job needs it, confirm they're registered with a relevant competent person scheme for building regs sign-off. Get a written quote that breaks down materials, labour and timescale, and ask what happens if unexpected costs crop up mid-job, such as finding rotten joists once floorboards come up. It's worth asking for photos of similar completed jobs, particularly if you're after something like a kitchen extension or a full house renovation. Getting two or three quotes isn't just about price comparison, it also gives you a feel for who communicates clearly and turns up when they say they will. For bigger jobs, check whether they're VAT registered and ask about payment stages, since paying everything upfront is rarely a good sign.
How We Select & Rate The Best Builders in Portsmouth

Rankings on this page are driven mainly by review rating and review count from public business listings, with a small lift given to businesses that show a working website and phone number. We check each business's homepage to confirm building work is what they primarily do, so unrelated trades don't appear here by mistake. Listings flagged as permanently closed are removed automatically. Businesses marked Trust Verified have gone through our full verification process, covering trade qualifications and accreditations, public liability insurance, trading history, customer review history and registered company information; see our How We Verify page for the complete list. Other businesses haven't been independently verified by us, and their inclusion isn't an endorsement. Always do your own checks before hiring anyone.

Recommended and Featured listings are paid placements, so a business's fee affects whether and where it appears. Every other listing is ranked on rating and review count from third-party business listings. How we rank & verify →

Quick Comparison — Builders in Portsmouth

# Business Rating Reviews Phone
1 CDM CONTRACTORS LTD ⭐ 5.0 149 023 9323 3110 View →
2 MEA Projects ⭐ 4.9 52 023 9378 8899 View →
3 Restore and revive ⭐ 5.0 30 07771 876319 View →
4 D & H Carpentry and Construction LTD ⭐ 4.9 35 023 9355 2695 View →
5 Brick Slip Facades (UK) Ltd ⭐ 5.0 21 07411 653365 View →
6 Clameg Design & Build Ltd ⭐ 5.0 20 023 9266 9288 View →
7 BMC LOFT CONVERSION SPECIALISTS ⭐ 4.8 22 023 9307 7492 View →
8 Form Construction ⭐ 5.0 11 023 9400 1002 View →
9 Limewood Builders South Limited ⭐ 5.0 9 07710 929290 View →
10 M2 BUILDERS ⭐ 5.0 6 07802 250348 View →
11 Morspace Construction LTD ⭐ 5.0 6 07793 490767 View →
12 Lifetime Construction LTD ⭐ 4.8 8 023 9281 2308 View →
13 Hartts Construction ⭐ 5.0 5 023 9381 2330 View →
14 Adson Construction ⭐ 5.0 7 View →
15 Evolve Design Build ⭐ 5.0 4 07989 481389 View →
16 Woodpecker Carpentry and Build Ltd ⭐ 5.0 4 07877 228083 View →
17 M & L Page Construction Ltd. ⭐ 5.0 4 023 9236 2066 View →
18 Vxo Vehicle Crossings Ltd ⭐ 4.3 6 07843 358491 View →
19 Vale Southern Construction Ltd ⭐ 4.2 5 023 9265 3600 View →
20 PMC Construction & Development Services Ltd ⭐ 4.0 5 023 9269 6025 View →
21 T Coleborn & Son Ltd ⭐ 4.0 4 023 9282 6662 View →
22 Mission Ready Developments Ltd ⭐ 5.0 6 023 9200 2461 View →

Our Top Picks

1
CDM CONTRACTORS LTD
Not Verified
5.0 (149 reviews)
Portsmouth 023 9323 3110

CDM Contractors Ltd is a building company based at Fairways Business Centre in Portsmouth, serving the local area with construction and building services. The company has earned a 5-star rating from 149 verified customer reviews, reflecting their commitment to quality workmanship. Operating from PO3 5NU, they provide reliable building solutions for residential and commercial clients across Portsmouth and surrounding areas.

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2
MEA Projects
Not Verified
4.9 (52 reviews)
Portsmouth 023 9378 8899

MEA Projects provides comprehensive building services to clients across Portsmouth and the surrounding areas from their base at Fairway Business Center. The company has earned a strong reputation with customers, maintaining a 4.9-star rating from 52 verified Google reviews. Their experienced team handles a range of construction and renovation projects for residential and commercial properties throughout the PO3 area.

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3
Restore and revive
Not Verified
5.0 (30 reviews)
Portsmouth 07771 876319

Restore and Revive provides building services across Portsmouth, operating from their base on Coleridge Road in the PO6 area. The company has earned a perfect 5-star rating from 37 verified customer reviews on Google. Their construction expertise covers restoration and renovation projects for residential and commercial properties throughout the Portsmouth area.

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4
D & H Carpentry and Construction LTD
Not Verified
4.9 (35 reviews)
Portsmouth 023 9355 2695

D & H Carpentry and Construction LTD provides comprehensive building services to clients across Portsmouth and surrounding areas from their base in Farlington. The company has earned a strong reputation with a 4.9/5 star rating based on 35 verified customer reviews. Their skilled tradespeople handle both carpentry work and general construction projects for residential and commercial clients.

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5
Brick Slip Facades (UK) Ltd
Not Verified
5.0 (21 reviews)
Portsmouth 07411 653365

Brick Slip Facades (UK) Ltd specialises in brick slip cladding and facade solutions for residential and commercial properties across Portsmouth and surrounding areas. Based in Fratton, this building contractor has earned a perfect 5-star rating from 21 verified customer reviews on Google. The company focuses on transforming building exteriors using modern brick slip techniques to enhance both appearance and weather protection.

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6
Clameg Design & Build Ltd
Not Verified
5.0 (20 reviews)
Portsmouth 023 9266 9288

Clameg Design & Build Ltd provides comprehensive building services to Portsmouth and the surrounding PO3 area from their base at Challenge Enterprise Centre. The company has earned a perfect 5-star rating from 20 verified customer reviews, reflecting their consistent approach to construction projects. Their established presence in Portsmouth positions them well to serve local residential and commercial building requirements.

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7
BMC LOFT CONVERSION SPECIALISTS
Not Verified
4.8 (22 reviews)
Portsmouth 023 9307 7492

BMC Loft Conversion Specialists provides professional loft conversion services to homeowners across Portsmouth and surrounding areas. The company transforms unused loft spaces into functional living areas, helping clients maximise their property's potential. With a strong 4.8 out of 5 star rating from 22 verified customer reviews, they have established a solid reputation for quality workmanship in the PO3 area and beyond.

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8
Form Construction
Not Verified
5.0 (11 reviews)
Portsmouth 023 9400 1002

Form Construction provides building services across Portsmouth and the surrounding areas from their base on Warren Avenue Industrial Estate in Southsea. The company has earned a perfect 5-star rating from 11 verified customer reviews on Google, reflecting their commitment to quality workmanship. They serve both residential and commercial clients throughout the Portsmouth area.

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9
Limewood Builders South Limited
Not Verified
5.0 (9 reviews)
Portsmouth 07710 929290

Limewood Builders provides construction and building services to Portsmouth and surrounding areas from their Hilsea base. The company maintains a perfect 5-star rating from 4 verified customer reviews on Google. Based on London Road in the PO2 area, they serve local clients with professional building work.

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10
M2 BUILDERS
Not Verified
5.0 (6 reviews)
Portsmouth 07802 250348

M2 Builders provides construction and building services to Portsmouth and the surrounding areas, operating from their base on London Road in Hilsea. The company has earned a perfect 5-star rating from 6 verified customer reviews, reflecting their commitment to quality workmanship. Serving the PO2 postcode area and beyond, they handle various building projects for residential and commercial clients.

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11
Morspace Construction LTD
Not Verified
5.0 (6 reviews)
Portsmouth 07793 490767

Morspace Construction LTD operates as a building company serving Portsmouth and surrounding areas from their Cosham base. The company maintains a 5-star Google rating from 6 verified customer reviews, reflecting their commitment to quality construction services. Clients can find more information about their building projects and services through their website at morspace.net.

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12
Lifetime Construction LTD
Not Verified
4.8 (8 reviews)
Portsmouth 023 9281 2308

Lifetime Construction LTD provides building services from their base on Garnier Street in Portsmouth city centre. The company has earned a 4.8 out of 5 star rating from 8 verified customer reviews on Google. They serve the Portsmouth area with construction work for residential and commercial clients.

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13
Hartts Construction
Not Verified
5.0 (5 reviews)
Portsmouth 023 9381 2330

Hartts Construction is a building company based in Hilsea, Portsmouth, providing construction services across the PO3 area. The company has earned a perfect 5/5 star rating from 5 verified customer reviews on Google. They operate from Culverin Square and maintain a professional web presence at hartts.co.uk.

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14
Adson Construction
Not Verified
5.0 (7 reviews)
Portsmouth

Adson Construction provides professional building services to clients across Portsmouth from their base at Fairways Business Centre. The company has earned a perfect 5-star rating from 7 verified customer reviews, reflecting their commitment to quality workmanship and customer satisfaction. Their central PO3 location enables them to serve the wider Portsmouth area efficiently.

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15
Evolve Design Build
Not Verified
5.0 (4 reviews)
Portsmouth 07989 481389

Evolve Design Build is a Portsmouth-based construction company serving the local area from their Southsea location on Worsley Street. The firm has earned a perfect 5-star rating from 4 verified customer reviews on Google. They provide building services across the Portsmouth and Southsea areas, combining design and construction expertise for residential and commercial projects.

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16
Woodpecker Carpentry and Build Ltd
Not Verified
5.0 (4 reviews)
Portsmouth 07877 228083

Woodpecker Carpentry and Build Ltd provides building and carpentry services to Portsmouth and surrounding areas from their base on Burrfields Road. The company has earned a perfect 5-star rating from 4 verified customer reviews on Google. Their services combine traditional carpentry skills with general building work for residential and commercial clients in the PO3 area.

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17
M & L Page Construction Ltd.
Not Verified
5.0 (4 reviews)
Portsmouth 023 9236 2066

M & L Page Construction Ltd. provides building services to Portsmouth and surrounding areas from their Stanley Avenue base. The company has earned a 5-star Google rating from 4 verified customer reviews, reflecting their commitment to quality workmanship and customer satisfaction.

Read more →
18
Vxo Vehicle Crossings Ltd
Not Verified
4.3 (6 reviews)
Portsmouth 07843 358491

Vxo Vehicle Crossings Ltd is a Portsmouth builder specialising in dropped kerbs and vehicle crossings. Operating from PO6 3NJ, the company focuses on a single trade rather than a broad building offer, which suits homeowners seeking a specialist for driveway access work. A Google rating of 4.3 from six reviews gives an early indication of consistent workmanship.

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19
Vale Southern Construction Ltd
Not Verified
4.2 (5 reviews)
Portsmouth 023 9265 3600

Vale Southern Construction Ltd provides building services throughout Portsmouth from their base in Hilsea. The company maintains a 4.2-star rating from 5 verified customer reviews on Google. They operate from Warren House on Gunstore Road, offering construction solutions to residential and commercial clients in the PO3 area and surrounding Portsmouth districts.

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20
PMC Construction & Development Services Ltd
Not Verified
4.0 (5 reviews)
Portsmouth 023 9269 6025

PMC Construction & Development Services Ltd provides building services from their Cosham base, serving Portsmouth and surrounding areas. The company has earned a 4-star rating from 5 verified customer reviews on Google. Their High Street location makes them easily accessible for local construction and development projects throughout the PO6 area.

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21
T Coleborn & Son Ltd
Not Verified
4.0 (4 reviews)
Portsmouth 023 9282 6662

T Coleborn & Son Ltd provides building services to Portsmouth and the surrounding areas from their base on Kirpal Road. The family-run construction company has earned a 4-star rating from 4 verified customer reviews on Google. They serve the PO3 postcode area and wider Portsmouth region with their building expertise.

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22
Mission Ready Developments Ltd
Not Verified
5.0 (6 reviews)
Portsmouth 023 9200 2461

Mission Ready Developments works mainly on older Portsmouth properties, where uneven walls and dated plumbing need careful reworking before a new bathroom goes in. The Portsmouth firm handles full strip-outs and refits, tailoring layouts to period homes rather than fitting standard suites regardless of the space. Its five reviews all rate the work at five stars.

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Transparency notice: Recommended and Featured listings are paid placements, so a business's fee affects whether and where it appears. 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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Frequently Asked Questions

How much does a builders cost in Portsmouth?
It varies a lot depending on the job. A small kitchen refit might run £4,000 to £8,000, while a single-storey rear extension in an area like Milton or North End could sit anywhere from £25,000 to £45,000 depending on size and finish. Loft conversions typically start around £30,000 and climb depending on whether you need dormers or structural steels. Labour rates for general building work in Portsmouth tend to run £150 to £250 a day per tradesperson, though this shifts with experience and demand. Always get two or three written quotes, since prices for the same job can differ by several thousand pounds.
Do I need planning permission for an extension in Portsmouth?
Many single-storey extensions fall under permitted development rights and don't need full planning permission, but this depends on the size, your property type and whether you're in a conservation area, which covers parts of Old Portsmouth and Southsea. Terraced houses often have tighter permitted development limits than semis or detached homes. It's worth checking with Portsmouth City Council's planning department or asking your builder to confirm before work starts, since building without the right consent can cause problems if you sell later.
How long does a house extension take in Portsmouth?
A single-storey extension typically takes eight to twelve weeks once it starts, though groundworks can slow things down if you hit clay soil or old foundations, which isn't unusual in older parts of the city like Eastney or Buckland. Loft conversions usually take four to six weeks. Add extra time for planning permission or building control approval if needed, and factor in a few weeks either side for design and material ordering.
What certificates should a builder provide after finishing work?
Ask for a building regulations completion certificate for any structural work, extensions or loft conversions, which your local authority or an approved inspector issues. If electrical or gas work formed part of the job, request the relevant compliance certificates from those specific tradespeople, such as a Gas Safe certificate for boiler alterations. Keep all paperwork together, as you'll need it if you sell the property or claim on a warranty later.
Should I use a builder who's a member of a trade body?
Membership of bodies like the Federation of Master Builders or TrustMark isn't compulsory, but it can offer some reassurance around trading standards and dispute resolution if something goes wrong. It's not a guarantee of quality on its own, so it's still worth checking reviews, asking for references from recent local jobs, and viewing previous work in person where possible, particularly for bigger projects like full renovations.
How do I choose between builders in Portsmouth?
Start by reading recent reviews rather than just the overall star rating, since patterns in feedback tell you more than a single score. Ask each builder for proof of public liability insurance and, where relevant, membership of a competent person scheme for building regs work. Request a detailed written quote, not just a rough verbal figure, and compare what's included, such as waste removal and materials. Visit a previous job if you can, or at least ask for photos and contact details of past customers. If a business carries a Trust Verified badge on this page, it means it's passed additional checks on qualifications, insurance and trading history; for anyone without that badge, doing this legwork yourself before booking is well worth the time.