16 Best Builders in Northampton for 2026

🏗️ 16 businesses · 📍 Northampton
✓ Verified Google reviews · ✓ Reviewed regularly · ✓ Updated 29 May 2026
Mark Reid
Written by Mark Reid, Trades Editor · Verified 29 May 2026
Northampton's housing stock is genuinely varied, and that matters when you're hiring a builder. The town centre and areas like Abington and St James have a strong mix of Victorian and Edwardian terraces, many with original lime mortar brickwork that needs careful matching when repairs or extensions are carried out. Further out, the postwar estates around Dallington and Kings Heath bring their own challenges, including cavity wall construction and the kind of soil conditions, particularly the heavy clay that sits under much of the county, that can cause real headaches with foundations if a builder isn't experienced working locally. Then there's the newer development across Upton and Hunsbury, where homeowners increasingly want single and double-storey extensions to add space to homes that were built compactly. Knowing which building regulations apply, how to deal with a Northampton Borough or West Northamptonshire planning officer, and which local suppliers can match specific brick colours: these are things a local builder understands in a way that someone travelling in from outside the county often doesn't.

The businesses on this page were drawn from third-party public business listings and ranked by their public review rating and review count, with a small lift applied to those that show a working website and a contactable phone number. We read each business's homepage to confirm that building work is what they primarily offer, which is how unrelated trades or businesses that happen to share a similar name get kept off this page. Any listing flagged as permanently closed is removed automatically. Where you see a Trust Verified badge next to a business, that company has gone a step further and passed our full independent 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 complete list of what that check involves. Businesses without that badge have not been independently verified by us, so it's worth doing those checks yourself before you book.

Before you commit to any builder, get at least three written quotes so you can compare like for like, not just the headline price but what's included, what materials are specified, and what the payment schedule looks like. Ask to see examples of similar local work and, if possible, speak to a previous customer directly. Confirm they hold adequate public liability insurance before anyone sets foot on site, and for any structural work, ask whether you'll need building regulations approval and who'll be responsible for arranging the relevant inspections. If your project involves anything close to the boundary, check permitted development rights with West Northamptonshire Council first. A well-run job will have a clear written contract, a realistic timeline, and a builder who's straightforward about what the price covers.
How We Select & Rate The Best Builders in Northampton

Rankings on this page are driven by public review rating and review count, pulled from third-party business listings, with a small lift for businesses that have a working website and a contactable phone number. We check each business's homepage to confirm that building work is what they primarily offer, keeping unrelated trades off the page. Listings flagged as permanently closed are removed automatically. Where a Trust Verified badge appears, that business has 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 Northampton

# Business Rating Reviews Phone
1 Swiss Build Recommended ⭐ 4.9 49 +44 1604 288123 View →
2 AAS Group Construction Ltd Featured ⭐ 5.0 17 +44 7777 792227 View →
3 Shoor Construction Featured ⭐ 5.0 14 +44 1604 385287 View →
4 Smart Build Services and Development Ltd Featured ⭐ 5.0 13 +44 1604 622608 View →
5 Sasbort LTD Featured ⭐ 4.9 14 +44 7490 430957 View →
6 S&R Northants ⭐ 4.8 16 +44 1604 439480 View →
7 Pi Building Services Ltd ⭐ 5.0 11 +44 7869 282052 View →
8 Keystone Group - All Trades One Place ⭐ 5.0 11 +44 1604 969509 View →
9 Boyson Construction ⭐ 4.7 15 +44 7779 026403 View →
10 Raybell and Sons Surfacing Ltd ⭐ 4.2 19 +44 1604 211111 View →
11 S & E Construction Group ⭐ 4.6 10 +44 7413 939000 View →
12 Total B Construction ⭐ 5.0 5 +44 1604 389079 View →
13 Northbrick ⭐ 5.0 4 +44 7400 086639 View →
14 Hewlett & Sons Groundworks Ltd ⭐ 4.3 8 +44 1604 714333 View →
15 M Home Renovations LTD ⭐ 4.3 6 +44 7411 155422 View →
16 International Construction Group ⭐ 4.0 4 +44 7553 541590 View →

Our Top Picks

6
S&R Northants
Not Verified
4.8 (16 reviews)
Northampton +44 1604 439480

S&R Northants provides building services to customers in Northampton and the surrounding areas. Operating from Charter Gate in the NN3 postcode area, the company has earned a strong reputation with a 4.8 out of 5 star rating based on 16 verified customer reviews. Their experienced team handles various construction and building projects for residential and commercial clients throughout Northamptonshire.

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7
Pi Building Services Ltd
Not Verified
5.0 (11 reviews)
Northampton +44 7869 282052

Pi Building Services Ltd operates from Moulton Park in Northampton, providing professional building services to clients across the NN3 area and surrounding neighbourhoods. The company has earned a perfect 5-star rating from 11 verified customer reviews on Google, reflecting their commitment to quality workmanship and customer satisfaction.

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8
Keystone Group - All Trades One Place
Not Verified
5.0 (11 reviews)
Northampton +44 1604 969509

Keystone Group - All Trades One Place provides comprehensive building services from their base on Kingsfield Way in Northampton. The company offers a wide range of construction and maintenance services under one roof, serving the NN5 area and surrounding neighbourhoods. With a perfect 5-star rating from 11 verified customer reviews, they have established a strong reputation for reliable workmanship across multiple trades.

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9
Boyson Construction
Not Verified
4.7 (15 reviews)
Northampton +44 7779 026403

Boyson Construction provides building services to clients across Northampton from their base on Harvey Reeves Road. The company has earned a 4.7-star rating from 15 verified customer reviews, reflecting their commitment to quality construction work in the NN5 area and surrounding districts.

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10
Raybell and Sons Surfacing Ltd
Not Verified
4.2 (19 reviews)
Northampton +44 1604 211111

Raybell and Sons Surfacing Ltd provides building services from their base on Lower Farm Road in Northampton, serving the NN3 area and surrounding districts. The company maintains a 4.2 out of 5 star rating based on 19 verified customer reviews. Their established reputation and local presence make them a reliable choice for construction and surfacing projects throughout Northampton.

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11
S & E Construction Group
Not Verified
4.6 (10 reviews)
Northampton +44 7413 939000

S & E Construction Group provides building services to customers in Northampton and the surrounding areas from their base in the NN3 postcode. The company has earned a solid reputation with a 4.6 out of 5 star rating from 10 verified customer reviews on Google. Their experienced team handles various construction projects for residential and commercial clients throughout the local area.

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12
Total B Construction
Not Verified
5.0 (5 reviews)
Northampton +44 1604 389079

Total B Construction provides building services to clients across Northampton from their base on Abington Street. The company has earned a perfect 5-star rating from 5 verified customer reviews, reflecting their commitment to quality workmanship and customer satisfaction.

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13
Northbrick
Not Verified
5.0 (4 reviews)
Northampton +44 7400 086639

Northbrick provides building services to customers in Northampton and surrounding areas from their base on Ellesmere Avenue. The company has earned a 5-star rating from 4 verified customer reviews on Google. Their website offers additional information about their construction and building work throughout the NN5 area.

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14
Hewlett & Sons Groundworks Ltd
Not Verified
4.3 (8 reviews)
Northampton +44 1604 714333

Hewlett & Sons Groundworks Ltd provides building and groundworks services from their base on Bunting Road in Northampton. The family-run company serves the NN2 area and surrounding neighbourhoods with construction expertise. With a Google rating of 4.3 out of 5 stars from 8 verified customer reviews, they have established a solid reputation for their building work.

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15
M Home Renovations LTD
Not Verified
4.3 (6 reviews)
Northampton +44 7411 155422

M Home Renovations LTD provides building services from their base on Lindsay Avenue in Northampton, serving the NN3 area and surrounding neighbourhoods. The company has earned a 4.3 out of 5 star rating from 6 verified customer reviews on Google. They maintain an online presence at mhomerenovations.com for potential clients seeking renovation and construction work.

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16
International Construction Group
Not Verified
4.0 (4 reviews)
Northampton +44 7553 541590

International Construction Group provides building services to clients in Northampton and the surrounding areas. The company has earned a 4-star rating from 4 verified customer reviews on Google. Their team handles various construction projects for residential and commercial properties throughout the local region.

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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 builders cost in Northampton?
Daily rates for skilled builders in Northampton typically range from £200-350, depending on the complexity of work and materials needed. Single-storey extensions start around £15,000-25,000, whilst two-storey extensions often cost £25,000-45,000. Bathroom refits range from £8,000-15,000, and kitchen installations from £12,000-25,000. Prices vary significantly based on materials chosen, structural work required, and current demand. Getting two or three detailed quotes helps you understand local market rates and what's included in each price.
Do I need planning permission for building work in Northampton?
Most extensions and alterations require planning permission in Northampton, particularly in Conservation Areas around the town centre. Single-storey rear extensions under 6 metres (terraced houses) or 8 metres (detached/semi-detached) may fall under permitted development rights, but check with West Northamptonshire Council first. Loft conversions often need permission if they alter the roofline. Your builder should advise on requirements, but the final responsibility lies with you as the homeowner.
How long do building projects typically take in Northampton?
Kitchen refits usually take 2-3 weeks, bathroom renovations 1-2 weeks, and single-storey extensions 8-12 weeks from start to finish. Two-storey extensions often take 12-16 weeks. These timelines include planning permission processing, which averages 8 weeks in West Northamptonshire. Weather delays are common in winter months, and material delivery schedules can add time. Discuss realistic timelines upfront and build in contingency time for your project.
What insurance should my builder have?
Your builder must carry current public liability insurance of at least £1 million, though £2 million is preferable for larger projects. Employer's liability insurance is required if they employ staff. For structural work, check they have professional indemnity insurance. New build work requires NHBC warranty or equivalent. Always ask to see current certificates before work begins, and verify coverage with the insurer if you're unsure about authenticity.
Can builders help with planning applications in Northampton?
Many established builders work with architectural technicians or have experience with West Northamptonshire Council's planning process. They can advise on what's likely to get approval and help prepare drawings for simpler applications. However, complex projects often need a qualified architect or planning consultant. Your builder should know local planning officers and understand common approval conditions. Factor planning costs of £300-500 for householder applications into your budget.
How do I check if a builder is reliable?
Start by verifying their business registration through Companies House and checking their registered address matches their trading location. Ask for three recent references from local customers and actually contact them. Check they hold current insurance certificates and relevant trade certifications. Look at their Google reviews over time, not just recent ones. Visit current job sites if possible, and trust your instincts about their professionalism during initial meetings. Never pay large deposits upfront.