8 Best Builders in Basingstoke for 2026

🏗️ 8 businesses · 📍 Basingstoke
✓ Verified Google reviews · ✓ Reviewed regularly · ✓ Updated 2 June 2026
Mark Reid
Written by Mark Reid, Trades Editor · Verified 2 June 2026
Basingstoke's housing stock is a real mix. You've got the post-war estates around Popley and South Ham, plenty of 1970s and 80s town-centre developments, Victorian terraces in the older parts of town, and newer builds spreading out towards Chineham and Old Basing. That variety matters when you're hiring a builder, because the work that comes with each property type is quite different. Solid chalk and clay subsoil under much of the borough means groundwork for extensions and new footings needs careful attention. Properties on the outskirts, particularly near Sherborne St John and Kempshott, often sit in conservation-adjacent areas where permitted development rights are restricted, so you'll want a builder who knows when to flag a planning query before the digger arrives. Extensions, loft conversions, garage conversions and full refurbishments are the most common jobs locally, though there's also steady demand for structural repairs on the older stock in Winklebury and Oakridge.

Every business on this page has been drawn from third-party public business listings and ranked by public review rating and review count, with a small lift applied to businesses that show a working website and phone number. Before anything appears here, we check each business's homepage to confirm that building work is what they primarily offer. That's what keeps unrelated trades off the page. Any listing flagged as permanently closed is removed automatically. Where you see a Trust Verified badge next to a business, that firm has gone a step further and 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 complete list of checks on our How We Verify page. Businesses without that badge haven't been independently verified by us, and it's worth doing those checks yourself before you book.

When you're getting quotes for building work in Basingstoke, ask each builder for a written, itemised quote rather than a verbal estimate. A loft conversion or single-storey rear extension will typically need drawings and, depending on the scope, either a full planning application or a Building Regulations application. Make sure you know which applies to your job, and confirm that the builder is comfortable liaising with Basingstoke and Deane Borough Council if planning is involved. Ask to see evidence of public liability insurance and, for structural work, check whether they'll be using a structural engineer and who provides that sign-off. Getting at least two or three quotes is sensible on anything above a straightforward refurbishment. Don't just compare the headline figures. Compare what's included, what the payment schedule looks like, and what happens if the job overruns.
How We Select & Rate The Best Builders in Basingstoke

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 phone number. We check each business's homepage to confirm that building work is what they primarily offer, which is how unrelated trades are kept 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 Basingstoke

# Business Rating Reviews Phone
1 National Builders Recommended ⭐ 4.9 41 +44 7971 409031 View →
2 Herringbone Brickwork Ltd Featured ⭐ 4.8 19 +44 7856 607920 View →
3 Elite Lofts Ltd Featured ⭐ 5.0 14 +44 1256 669867 View →
4 Cherry Lofts Designs Featured ⭐ 4.7 18 +44 1256 591333 View →
5 Basingstoke Mastic Man Sealant Service Featured ⭐ 5.0 11 +44 7520 642740 View →
6 Yilmaz Construction & Ventilation ⭐ 5.0 7 +44 7951 273843 View →
7 DOHAN CONSTRUCT LTD ⭐ 5.0 4 +44 7467 378467 View →
8 Four Walls Services Ltd ⭐ 5.0 3 +44 7766 917700 View →

Our Top Picks

6
Yilmaz Construction & Ventilation
Not Verified
5.0 (7 reviews)
Basingstoke +44 7951 273843

Yilmaz Construction & Ventilation is a building and ventilation contractor based in Basingstoke. The company carries a five-star Google rating across its reviews, reflecting consistent work across its trade. Operating from the RG24 area, it covers construction and ventilation projects for local clients.

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7
DOHAN CONSTRUCT LTD
Not Verified
5.0 (4 reviews)
Basingstoke +44 7467 378467

Covering residential and commercial construction work in Basingstoke, Dohan Construct Ltd operates from the RG22 postcode area and takes on projects from groundworks through to full builds. The company keeps its scope focused on construction rather than branching into unrelated trades, making it a straightforward point of contact for clients commissioning structural work in Hampshire.

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8
Four Walls Services Ltd
Not Verified
5.0 (3 reviews)
Basingstoke +44 7766 917700

Rated highly by local clients, Four Walls Services Ltd operates as a building contractor covering Basingstoke and the surrounding area. The company takes on residential and commercial construction work, with its RG24 postcode placing it conveniently for projects across the northern reaches of the town. A consistent review record suggests reliable delivery across the range of work builders in this category typically carry out.

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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 building work cost in Basingstoke?
It varies quite a bit depending on the type and scale of the job. A straightforward single-storey rear extension in Basingstoke typically runs from around £25,000 to £45,000 for a modest size, though larger or more complex builds can go well beyond that. A double-storey extension usually starts around £40,000 to £70,000. Loft conversions range from roughly £30,000 for a basic rooflight conversion up to £55,000 or more for a dormer with an en suite. Garage conversions tend to be cheaper, often £8,000 to £18,000 depending on how much structural work is involved. Full house renovations are priced per square metre and vary enormously, but budget from around £1,000 to £1,800 per square metre as a working figure. Getting two or three quotes from local builders is the norm on any job of this size, and a written, itemised quote is always worth asking for.
Do I need planning permission for an extension in Basingstoke?
Not always. Many single-storey rear extensions fall within permitted development rights, which means you don't need a formal planning application. However, if your property is in a conservation area, is a listed building, or if the extension exceeds certain size thresholds, you'll need full planning permission from Basingstoke and Deane Borough Council. Parts of Old Basing, Sherborne St John, and some areas around the town centre have additional restrictions. Even if planning permission isn't required, Building Regulations approval almost certainly will be for anything structural. A good local builder will tell you upfront which approvals apply to your specific job. If you're not sure, it's worth checking with the council's planning department before any work starts.
How long does a typical extension or loft conversion take in Basingstoke?
A single-storey rear extension generally takes between eight and sixteen weeks from groundworks to completion, depending on size and finishes. A loft conversion is often quicker once work starts on site, typically six to twelve weeks, though the planning and Building Regulations approval process adds time before a spade goes in. Double-storey extensions and larger renovation projects can run for four to six months or more. Groundwork timelines can be affected by the chalk and clay subsoil conditions common around Basingstoke, particularly if you hit unexpected ground or need deeper foundations than anticipated. Build in some contingency when you're planning around the work.
What should I check before signing a contract with a builder?
Start with the quote. Make sure it's written and itemised, not just a single figure. It should specify what materials are included, what's excluded, the payment schedule, and what happens if unexpected work is discovered once the job starts. Ask for proof of public liability insurance before any work begins. For structural work, ask whether a structural engineer is involved and who provides the Building Regulations sign-off. If the job involves scaffolding, confirm who's responsible for that. Check the payment schedule carefully. Reputable builders won't ask for large upfront payments on most domestic jobs. A reasonable deposit is normal, but the bulk of payment should follow the work in staged instalments.
Can a Basingstoke builder help with a garage conversion?
Yes, garage conversions are one of the more common jobs local builders take on, particularly on the estate-style housing in areas like Chineham, Popley, and Brighton Hill where integral garages are common. The work typically involves installing a proper floor with damp-proofing, adding insulation to walls and the roof, fitting a suitable window or door, and bringing the space up to Building Regulations standards for habitable use. You don't usually need planning permission for a garage conversion unless you're in a designated area, but you will need Building Regulations approval. Costs typically run from around £8,000 to £18,000 depending on the size and the finish you're after.
How do I choose between builders in Basingstoke and make sure they're legitimate?
Start by asking each builder for references from recent local jobs. A builder who's worked in Basingstoke recently should be able to point you to a completed project you can ask about. Ask for proof of public liability insurance and check the policy covers the type of work you're having done. If the job involves gas or electrical work as part of a larger build, confirm that any subcontractors are appropriately registered for those trades. Look at their public reviews, but don't rely on them alone. Check whether the business is registered with Companies House if it trades as a limited company. For added peace of mind, you can look for builders who are members of the Federation of Master Builders or similar trade bodies, though membership alone doesn't guarantee quality. Getting multiple quotes also helps. If one quote is significantly lower than the others, ask why before you commit.