25 Best Builders in London for 2026

🏗️ 25 businesses · 📍 London
✓ Verified Google reviews · ✓ Reviewed regularly · ✓ Updated 29 May 2026
Mark Reid
Written by Mark Reid, Trades Editor · Verified 29 May 2026
London's housing stock is unlike anywhere else in the UK. You've got Victorian terraces in Hackney and Islington with original lime plaster and single-skin brick walls, Edwardian semis across Ealing and Lewisham that need careful structural consideration before any rear extension goes up, post-war council builds in Lambeth and Tower Hamlets with their own quirks around concrete frame construction, and Georgian townhouses in Kensington or Bloomsbury where any building work near a party wall triggers formal legal obligations under the Party Wall etc. Act 1996. Then there's London clay. It runs under a huge swathe of the city, and it shrinks and swells with moisture changes, which means foundations for extensions and new builds need to go deeper than many homeowners expect, typically 1.2 metres or more in clay-heavy areas. Add to that the sheer density of properties, tight access through terraced side returns, and the frequency of listed buildings and conservation areas across boroughs from Richmond to Southwark, and you quickly see why hiring a builder who genuinely knows London is worth the effort.

The businesses on this page were drawn from third-party public business listings and ranked by public review rating and review count, with a small lift applied to businesses that have a working website and phone number. We check each business's homepage to confirm that building work is what they primarily offer, which is how unrelated trades get kept off the page. Permanently closed listings are removed automatically. Where you see a Trust Verified badge on a listing, that business has additionally passed our full verification process, covering trade qualifications and accreditations, public liability insurance, trading history, customer review history, and registered company information. You can see the complete list of checks on our How We Verify page. For any business on this page that doesn't carry that badge, those checks haven't been done by us, and they're something you should carry out yourself before booking.

Getting a few quotes is genuinely useful here, not just for price comparison but because different builders will scope the same job differently. For an extension in London, expect quotes to vary based on specification, materials, and how the builder prices groundworks on clay. Ask each builder to break the quote down in writing so you can compare like for like. Confirm whether planning permission or permitted development applies to your project, and if your property is semi-detached or terraced, check whether a party wall notice is needed before work starts. For any structural work, you'll want drawings from a structural engineer and you should ask your builder whether they'll arrange building control inspections or whether that's down to you. If work involves gas appliances or a new boiler, the installer must be Gas Safe registered. For electrical work, ask about Part P certification. Keep copies of everything.
How We Select & Rate The Best Builders in London

Rankings on this page are driven by public review rating and review count from third-party business listings, with a small lift for businesses that have a working website and phone number. We check each business's homepage to confirm that building work is what they primarily offer, keeping unrelated trades off the page. Permanently closed listings are removed automatically. Businesses marked Trust Verified have additionally passed our full verification 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 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 →

Quick Comparison — Builders in London

# Business Rating Reviews Phone
1 LINX Design And Build Recommended ⭐ 5.0 125 +44 20 8914 7824 View →
2 North Star Building Solutions Limited Featured ⭐ 4.9 127 +44 7883 535012 View →
3 Building Vision London Ltd Featured ⭐ 4.9 95 +44 7871 647667 View →
4 Gurra Construction Featured ⭐ 5.0 60 +44 7452 804995 View →
5 BNS Groundwork London Featured ⭐ 5.0 41 +44 7864 331035 View →
6 IFA Construction LTD ⭐ 5.0 37 +44 7463 740312 View →
7 Home Builder London Ltd ⭐ 5.0 34 +44 7473 463936 View →
8 Kilnbridge ⭐ 4.6 65 +44 20 7511 1888 View →
9 SX Basement Construction London ⭐ 5.0 33 +44 7520 637289 View →
10 Blue Line Build ⭐ 5.0 28 +44 7821 826609 View →
11 Pimlico Building Ltd ⭐ 5.0 28 +44 7930 966990 View →
12 Regal Construction Services ⭐ 4.6 49 +44 7387 831424 View →
13 HAZE Construction ⭐ 5.0 23 +44 7939 276474 View →
14 Daja Contractors LTD ⭐ 5.0 21 +44 7449 276775 View →
15 RW Construction ⭐ 5.0 21 +44 7975 751275 View →
16 Kelmend Construction Ltd ⭐ 5.0 18 +44 20 8226 0221 View →
17 ELB Construction Services ⭐ 5.0 16 +44 20 3811 8325 View →
18 JK PRO BUILDERS LTD ⭐ 5.0 23 View →
19 Ripe Solutions - Construction Company London ⭐ 5.0 15 +44 20 7050 0699 View →
20 Wangwang Construction ⭐ 5.0 15 +44 7450 778888 View →
21 Enbuild Construction ⭐ 5.0 14 +44 7404 270228 View →
22 London Builders Town Team Ltd ⭐ 5.0 14 +44 7920 521287 View →
23 RIB Construction Management LTD ⭐ 5.0 14 +44 8799685 View →
24 Montrose Construction Ltd ⭐ 5.0 13 +44 20 3576 2889 View →
25 London Elite Trades Ltd ⭐ 4.9 15 +44 7877 648454 View →

Our Top Picks

6
IFA Construction LTD
Not Verified
5.0 (37 reviews)

IFA Construction LTD provides building services across London from their Pimlico base on Cumberland Street. The company has earned a 5-star rating from 37 verified customer reviews, reflecting their consistent delivery of construction projects. They serve clients throughout the SW1V area and wider London region with professional building solutions.

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7
Home Builder London Ltd
Not Verified
5.0 (34 reviews)

Home Builder London Ltd provides comprehensive building services across London, operating from their base in SE23. The company has earned a perfect 5-star rating from 34 verified customer reviews, reflecting their reliable approach to residential and commercial construction projects.

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8
Kilnbridge
Not Verified
4.6 (65 reviews)

Kilnbridge is a building company based in London E16, providing construction services across the capital. The company has earned a 4.6-star rating from 65 verified customer reviews on Google. Their team handles various building projects for residential and commercial clients throughout London.

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9
SX Basement Construction London
Not Verified
5.0 (33 reviews)

SX Basement Construction London specialises in basement excavation and construction projects across the capital, operating from their Great Portland Street base in W1W. The company has earned a perfect 5-star rating from 33 verified Google reviews, reflecting their expertise in underground construction work. Their services focus on creating additional living or commercial space through professional basement development for London property owners.

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10
Blue Line Build
Not Verified
5.0 (28 reviews)

Blue Line Build provides professional building services across London and the SM5 area, operating from their base on Quarr Road. The company has earned a perfect 5-star rating from 28 verified customer reviews, reflecting their commitment to quality workmanship and customer satisfaction.

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11
Pimlico Building Ltd
Not Verified
5.0 (28 reviews)

Pimlico Building Ltd provides comprehensive building services from their Victoria Street base in central London. The company has earned a perfect 5-star rating from 28 verified customer reviews, reflecting their commitment to quality construction work. They serve clients across London, offering professional building solutions for both residential and commercial projects.

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12
Regal Construction Services
Not Verified
4.6 (49 reviews)

Regal Construction Services Ltd provides professional building services across London, operating from their base on North End Road in W14. With a strong reputation reflected in their 4.6-star rating from 49 verified customer reviews, they handle various construction projects for residential and commercial clients. The company serves the wider London area, delivering reliable building solutions with a focus on quality workmanship.

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13
HAZE Construction
Not Verified
5.0 (23 reviews)

HAZE Construction provides building services from their Kensington High Street location in central London. The company has earned a 5-star rating from 23 verified customer reviews on Google. They serve clients across London with a range of construction and building projects.

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14
Daja Contractors LTD
Not Verified
5.0 (21 reviews)

Daja Contractors LTD provides professional building services throughout London from their Tyburnia base in W2. The company has earned a perfect 5-star rating from 21 verified customer reviews, reflecting their commitment to quality workmanship and customer satisfaction. They serve residential and commercial clients across the capital with a comprehensive range of construction and renovation projects.

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15
RW Construction
Not Verified
5.0 (21 reviews)

RW Construction provides building services across London, operating from their base in SE4. The company has earned a 5-star rating from 21 verified customer reviews on Google. They offer comprehensive construction solutions for residential and commercial clients throughout the capital.

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16
Kelmend Construction Ltd
Not Verified
5.0 (18 reviews)

Kelmend Construction Ltd provides building services across London from their base in SE7. The company has earned a perfect 5-star rating from 18 verified customer reviews on Google. Their team handles various construction projects for residential and commercial clients throughout the capital.

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17
ELB Construction Services
Not Verified
5.0 (16 reviews)

ELB Construction Services operates from their Fulham office, providing comprehensive building services across London. With an exceptional 5-star rating from 16 verified customer reviews, they handle various construction projects for residential and commercial clients. The company maintains a professional online presence and serves customers throughout the capital from their SW6 base.

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18
JK PRO BUILDERS LTD
Not Verified
5.0 (23 reviews)
London

JK PRO BUILDERS LTD provides comprehensive building services across London from their Croydon base, serving clients throughout the CR0 area and surrounding regions. The company has earned a perfect 5-star rating from 23 verified customer reviews, reflecting their commitment to quality workmanship and customer satisfaction. Their experienced team handles various construction projects, from residential renovations to commercial building work.

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19
Ripe Solutions - Construction Company London
Not Verified
5.0 (15 reviews)

Ripe Solutions is a construction company serving London, specialising in building services from their base on City Road in EC1V. The company has earned a perfect 5-star rating from 15 verified customer reviews on Google. They provide professional building solutions across the capital, focusing on quality construction work for residential and commercial clients.

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20
Wangwang Construction
Not Verified
5.0 (15 reviews)

Wangwang Construction provides building services across London, operating from their base in SE13. The company has earned a perfect 5-star rating from 15 verified customer reviews on Google, reflecting their commitment to quality workmanship and customer satisfaction.

Read more →
21
Enbuild Construction
Not Verified
5.0 (14 reviews)

Enbuild Construction provides building services from their First Floor office on Great Portland Street in central London. The company serves the W1W area and surrounding London districts with construction expertise. With a perfect 5-star rating from 14 verified customer reviews, they have established a strong reputation for quality workmanship amongst local clients.

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22
London Builders Town Team Ltd
Not Verified
5.0 (14 reviews)

London Builders Town Team Ltd provides building services across London, operating from their base in SE16. The company has earned a 5-star rating from 14 verified customer reviews, reflecting their commitment to quality workmanship and customer satisfaction.

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23
RIB Construction Management LTD
Not Verified
5.0 (14 reviews)
London +44 8799685

RIB Construction Management LTD operates as a building contractor based in London's E14 area, serving clients across the capital with construction and building services. The company maintains a 5-star rating from 14 verified customer reviews, reflecting consistent client satisfaction with their building projects.

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24
Montrose Construction Ltd
Not Verified
5.0 (13 reviews)

Montrose Construction Ltd provides building services from their base on Allen Street in Kensington, London W8. The company has earned a perfect 5-star rating from 13 verified customer reviews on Google. They serve clients across London with professional construction and building work.

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25
London Elite Trades Ltd
Not Verified
4.9 (15 reviews)

London Elite Trades Ltd provides professional building services across London from their Fitzroy Street base in W1T. The company has earned a strong reputation with customers, maintaining a 4.9 out of 5 star rating based on 15 verified Google reviews. They offer comprehensive construction solutions for residential and commercial clients throughout the capital.

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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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Frequently Asked Questions

How much does a builder cost in London?
London builders typically charge £200-350 per day for skilled tradesmen, with project costs varying enormously by scope. A kitchen extension might run £15,000-40,000, whilst a full house renovation could reach £100,000+. Location matters too - work in Westminster or Kensington commands premium rates compared to outer boroughs. Always get three detailed quotes to understand the local market rate for your specific project.
Do I need planning permission for building work in London?
Most extensions and structural changes require planning permission, especially in conservation areas or for listed buildings. Your builder should advise on requirements, but ultimately it's your responsibility as the homeowner. Contact your local council's planning department early in the process. Some work falls under permitted development rights, but rules are complex and vary by property type and location.
How long do typical building projects take in London?
Timeline depends on project complexity and material availability. A single-storey extension typically takes 8-12 weeks from start to finish. Full house renovations can run 4-8 months. London-specific delays include party wall negotiations (6-8 weeks), planning permission (8 weeks minimum), and materials delivery challenges in narrow streets. Factor in 20% contingency time for unexpected issues.
What insurance should my builder have?
Your builder must carry public liability insurance of at least £2 million, covering damage to your property and neighbouring homes. Employer's liability insurance is required if they employ staff. For major structural work, consider hiring builders with NHBC warranty coverage or similar structural guarantees. Always request certificates before work begins and verify policies are current.
How do I handle disputes with builders in London?
Start by documenting issues in writing and giving the builder opportunity to rectify problems. If they're Federation of Master Builders members, you can use their dispute resolution service. For serious issues, contact your local Trading Standards office or consider the Construction Industry Council's mediation service. Keep detailed records of all communications and photographic evidence of work quality.
How can I verify a builder's credentials before hiring?
Check their Companies House listing to confirm active trading status and director details. Verify insurance certificates directly with the insurer. Ask for three recent customer references and actually call them. Drive past their previous local jobs if possible. Check online reviews across multiple platforms, not just their website testimonials. Avoid door-to-door traders and always get written quotes with detailed specifications.