13 Best Builders in Chelmsford for 2026

Chelmsford has a varied housing stock that keeps local builders busy across a wide range of work. Victorian and Edwardian terraces around areas like Moulsham and New Writtle Street regularly need structural repairs, repointing, and chimney work. Post-war semis across Galleywood, Springfield, and Writtle are prime candidates for single and double-storey extensions, loft conversions, and garage conversions. Newer builds on the fringes of the city, including developments around Great Baddow and Broomfield, tend to generate work around driveways, boundary walls, and outbuildings. The London Stansted rail corridor makes Chelmsford attractive to commuters improving their homes rather than moving, so demand for quality building work stays strong. Essex clay soils also mean foundation assessments and underpinning come up more than they might in other parts of the country, so it's worth asking any builder you approach whether they've worked on similar ground conditions locally.

The businesses on this page were drawn from third-party public business listings and ranked by review rating and review count, with a small lift applied to those that have a working website and phone number. We then checked each business's homepage to confirm that building work is what they primarily offer, which is how unrelated trades get filtered out. Any listing flagged as permanently closed is removed automatically. Where you see a Trust Verified badge next to a business, that company has additionally passed our full verification process, which covers trade qualifications and accreditations, public liability insurance, trading history, customer review history, and registered company information. You can see the full list of checks on our How We Verify page. Businesses that don't carry that badge have not been independently verified by us, and those checks are ones you'll need to carry out yourself before booking.

Before you commit to any builder, get at least two or three written quotes that break down labour and materials separately. A vague lump sum makes it very hard to compare prices or spot where costs are inflated. Ask to see their public liability insurance certificate, and for larger jobs, check whether they hold a relevant trade accreditation such as membership of the Federation of Master Builders or the Guild of Builders and Contractors. For extensions or structural work you'll likely need building regulations approval, and in some cases permitted development rights won't apply, so planning permission will be required. Confirm who's responsible for submitting those applications before work starts. It's also worth asking for contact details for two or three recent local jobs you can actually speak to, rather than just reading testimonials on a website.

How We Select & Rate The Best Builders in Chelmsford

Rankings on this page are driven by review rating and review count pulled from third-party public 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, which keeps unrelated trades off the page. Listings flagged as permanently closed 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. Other businesses on this page have not been independently verified by us, and inclusion is not an endorsement. Always carry out your own checks before hiring.

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 Chelmsford

#	Business	Rating	Reviews	Phone
1	Houghton Group	⭐ 4.8	72	01245 471289	View →
2	Garland & Bird Ltd	⭐ 4.9	22	07899 987728	View →
3	InRenovate	⭐ 5.0	17	01245 377892	View →
4	John Ford Group	⭐ 4.8	22	01245 267333	View →
5	Poolman Leisure Group Ltd	⭐ 4.1	61	01277 222066	View →
6	S&D Building and Groundworks Ltd	⭐ 5.0	11	01245 377803	View →
7	Blackwater Developments Ltd	⭐ 5.0	11	01245 939316	View →
8	Garage2Room	⭐ 5.0	10	07453 530459	View →
9	The TP Group	⭐ 4.7	15	01277 841415	View →
10	Ronnoco Building Services Ltd	⭐ 4.8	12	0800 917 4009	View →
11	Construction Inc	⭐ 4.4	15	01245 377782	View →
12	AR Design and Build Ltd	⭐ 4.4	13	07738 801617	View →
13	Broadfield Design and Build	⭐ 4.3	6	01245 200370	View →

Our Top Picks

Houghton Group

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★★★★★ 4.8 (72 reviews)

Chelmsford 01245 471289

General building work across Chelmsford and the surrounding area is the focus of Houghton Group, a contractor with a 4.8 rating from 72 Google reviews. The firm takes on residential and commercial projects, covering construction and refurbishment work throughout Essex. That rating, drawn from a reasonable volume of clients, points to consistent delivery rather than a handful of outlying opinions.

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Garland & Bird Ltd

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★★★★★ 4.9 (22 reviews)

Chelmsford 07899 987728

Specialising in residential construction and renovation, Garland & Bird Ltd operates out of Chelmsford with a 4.9-star rating across 22 Google reviews. The firm takes on building projects ranging from extensions to full structural works, serving homeowners across the CM2 area. Consistent client feedback points to reliable workmanship and clear communication throughout each build.

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InRenovate

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★★★★★ 5.0 (17 reviews)

Chelmsford 01245 377892

Homeowners and commercial clients across Chelmsford turn to InRenovate for building and renovation work, with the company holding a five-star Google rating across 17 reviews. Based in the CM1 area, it covers projects from structural alterations to full refurbishments. The consistent feedback points to reliable workmanship and straightforward communication throughout each job.

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John Ford Group

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★★★★★ 4.8 (22 reviews)

Chelmsford 01245 267333

John Ford Group is a building contractor based in Chelmsford, carrying a 4.8 Google rating from local clients. The firm handles construction and building work across the CM1 area, with a rating that reflects consistent delivery on residential and commercial projects. A straightforward option for those seeking a Chelmsford-based builder with a verifiable track record.

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Poolman Leisure Group Ltd

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★★★★☆ 4.1 (61 reviews)

Chelmsford 01277 222066

Poolman Leisure Group Ltd is a building contractor based in Chelmsford, operating under the CM2 postcode area. The company works within the leisure sector, taking on construction projects that intersect with recreational and amenity development. Its website, poolman.co.uk, outlines the scope of work the firm undertakes across the region.

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S&D Building and Groundworks Ltd

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★★★★★ 5.0 (11 reviews)

Chelmsford 01245 377803

Groundworks sits at the core of S&D Building and Groundworks Ltd, a Chelmsford contractor covering everything from foundations and drainage to wider building work. The company holds a five-star Google rating across eleven reviews, suggesting consistent quality on the jobs it takes on. S&D operates across the CM1 area and surrounding parts of Essex.

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Blackwater Developments Ltd

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★★★★★ 5.0 (11 reviews)

Chelmsford 01245 939316

Blackwater Developments Ltd carries out building work for residential and commercial clients across Chelmsford and the surrounding area. The company holds a five-star Google rating from its reviewers, suggesting consistent standards on site. Work spans the range of projects typical of a general builder, from structural alterations to new builds.

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Garage2Room

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★★★★★ 5.0 (10 reviews)

Chelmsford 07453 530459

Garage2Room is a Chelmsford building firm specialising in garage conversions. The company focuses on transforming existing garage space into habitable rooms, covering the structural, insulation, and finishing work the job requires. A five-star rating across ten Google reviews points to consistent results for local homeowners looking to add usable living space without extending their footprint.

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The TP Group

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★★★★★ 4.7 (15 reviews)

Chelmsford 01277 841415

Building and construction services across Chelmsford and the surrounding area, The TP Group carries a 4.7 Google rating from local clients. The company takes on residential and commercial work, covering the range of projects typical of a general builder. CM2 7SY places them well for enquiries from the south of the city.

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Ronnoco Building Services Ltd

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★★★★★ 4.8 (12 reviews)

Chelmsford 0800 917 4009

Rated 4.8 out of five across twelve Google reviews, Ronnoco Building Services Ltd operates as a general builder serving Chelmsford and the surrounding area. The score points to consistent work and reliable communication rather than one-off praise. CM1 2QE places the business centrally within the town, making it a practical option for homeowners and commercial clients in the locality.

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Construction Inc

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★★★★☆ 4.4 (15 reviews)

Chelmsford 01245 377782

Rated 4.4 out of 5 across 16 Google reviews, Construction Inc operates as a building contractor serving Chelmsford and the surrounding area. The CM2 postcode base places the company well for residential and commercial work across central Essex. Sixteen reviews at that rating points to a consistent record of completed projects rather than a handful of outliers.

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AR Design and Build Ltd

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★★★★☆ 4.4 (13 reviews)

Chelmsford 07738 801617

AR Design and Build Ltd is a building firm based in Chelmsford, covering construction and design work across the local area. The CM9 postcode places them on the eastern fringe of the town, giving reasonable reach into the surrounding Essex villages. Their combined design and build offer means clients work with a single outfit from initial plans through to completed construction.

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Broadfield Design and Build

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★★★★☆ 4.3 (6 reviews)

Chelmsford 01245 200370

Broadfield Design and Build is a construction firm based in Chelmsford, covering residential and commercial building work across the area. With a Google rating of 4.3, the company handles projects from initial design through to completion, offering clients a single point of contact throughout the build process.

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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 builder cost in Chelmsford?

Day rates for a skilled builder in Chelmsford typically run between £200 and £350 per day, depending on experience and the nature of the work. For project-based pricing, a single-storey kitchen extension in the Chelmsford area generally comes in somewhere between £18,000 and £35,000 fully finished, while a loft conversion on a typical semi-detached in Springfield or Galleywood might range from £25,000 to £50,000 depending on the type of conversion and specification. Smaller jobs like a garage conversion can cost anywhere from £8,000 to £18,000. Prices vary based on materials chosen, the condition of the existing structure, access to the site, and how much groundwork is involved. Essex clay ground conditions can add cost if underpinning or deeper foundations are needed. Getting two or three detailed written quotes is the normal approach and gives you a realistic sense of what the market rate is for your specific job.

Do I need planning permission for an extension in Chelmsford?

Many extensions fall under permitted development rights, which means you don't need a formal planning application. However, there are limits. For a rear single-storey extension on a detached house, permitted development allows up to eight metres in depth, and for a semi-detached or terraced property, it's six metres. Exceeding those depths, building on a corner plot, or living in a conservation area changes things significantly. Chelmsford city centre and parts of Moulsham Street fall within or near conservation areas, and some newer estates have had permitted development rights removed by condition on the original planning consent. Your builder should be aware of these rules, but you can also check with Chelmsford City Council's planning department directly before any work starts. Building regulations approval is separate from planning permission and is required for most structural work regardless.

How long does a typical building project take in Chelmsford?

Timescales depend heavily on the scope of work. A straightforward single-storey extension typically takes six to twelve weeks on site once foundations are dug, materials are on order, and any groundwork issues are resolved. A full loft conversion tends to run eight to fourteen weeks. Larger projects like a full house renovation or a two-storey extension can take four to six months. Bear in mind that material lead times and subcontractor availability, particularly for electricians and plumbers, can affect the programme. It's worth pinning down a realistic start date in writing and asking your builder how many other jobs they're running at the same time, since a small firm juggling multiple sites can cause delays.

What should a builder's quote include?

A solid written quote should break down the cost of labour and materials separately, list the specific work that's included, and be clear about what isn't included. For example, skip hire, structural engineer fees, and building control application costs are sometimes excluded and can add up. It should also state a realistic timeframe and a payment schedule. Be cautious about any quote that asks for a large deposit upfront, anything over 10 to 20 percent is unusual for a standard project. If VAT applies it should be shown separately. Ask whether the quote is fixed price or an estimate, since those are very different things. Fixed-price contracts give you more certainty, while estimates can change as work progresses. For larger jobs it's worth having a solicitor or surveyor review the contract before you sign.

What type of building work is most common for homes in Chelmsford?

Extensions are by far the most common type of work, both single and double storey, driven partly by the cost of moving in the area and partly by the size of gardens on 1930s to 1970s housing estates in places like Writtle, Broomfield, and Great Baddow. Loft conversions are popular on the semi-detached housing stock across Springfield and Chelmer Village. Older properties around Moulsham and the city centre often need chimney repairs, repointing, and damp-proofing work. Garage conversions are common where households have outgrown their space. There's also steady demand for new-build outbuildings and home offices, which saw strong uptake as working patterns changed. On Victorian terraces, underpinning and foundation work crops up more frequently than on newer builds, due to the shrink-swell behaviour of the local clay soil.

How do I check a builder is trustworthy before hiring them in Chelmsford?

Start by asking for their public liability insurance certificate and checking the policy is current. A reputable builder won't hesitate to share this. Ask whether they're a member of a recognised trade body such as the Federation of Master Builders, which requires members to pass independent vetting and hold insurance. Check their reviews across public business listings, paying attention to how they handle any negative feedback. Ask for references from two or three completed jobs in Chelmsford or nearby, and actually call those customers rather than just reading written testimonials. For any work requiring building regulations approval, confirm the builder will notify the local authority or use an approved inspector, since it's your responsibility as the homeowner to ensure sign-off is obtained. Finally, search the company name on Companies House to check it exists as registered and see how long it's been trading.

13 Best Builders in Chelmsford for 2026

Quick Comparison: Builders in Chelmsford

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