How to Find a Good Builder in the UK (2026)
Finding a good builder in 2026 comes down to three things: sourcing vetted names from trade bodies like the FMB and TrustMark, vetting each one on insurance, references and real past work, and comparing at least three like-for-like written quotes. A general builder charges roughly £180–£320 a day, and getting the wrong one is the single most expensive mistake on any project. This guide shows you exactly where to find reputable builders, how to check they are genuine, how to read and compare quotes, the typical 2026 UK rates and project costs, and the contract and payment terms that protect you.
2026 UK builder rates at a glance
Before you can judge whether a builder is good value, you need a feel for the going rate. The table below shows typical 2026 UK figures for the most common jobs. Treat them as a sanity check: a quote that comes in far below these bands is usually missing something from the scope, while one far above may reflect a premium finish, difficult access, or simply a builder who is too busy to want the work.
| Job or trade | Typical cost (2026) | Notes |
|---|---|---|
| General builder day rate | £180–£320 per day | Per person; higher in the South East |
| Labourer day rate | £120–£180 per day | Site support, clearance, mixing |
| Bricklayer day rate | £180–£280 per day | Or £0.90–£1.60 per brick laid |
| Small single-storey extension (15m²) | £27,000–£42,000 | Shell to finish, standard spec |
| Loft conversion (dormer) | £45,000–£75,000 | Rooms in roof with stairs |
| Kitchen refit (labour + fitting) | £4,500–£12,000 | Excludes the units themselves |
| Bathroom refit (labour + fitting) | £3,500–£8,000 | Full strip-out and re-fit |
| Re-roof (typical semi) | £6,000–£12,000 | Strip, felt, batten and re-tile |
| Block-paved driveway (40m²) | £4,000–£8,000 | Excavation, base and edging |
These are labour-and-materials ranges for a competent, insured builder in 2026. Day rates matter most for small or open-ended jobs; for a defined project like an extension you should always price the whole job, not the days, so the risk of over-run sits with the builder.
Where to find vetted builders in the UK
Good builders are busy and rarely need to advertise, so the best ones are usually found through trusted channels rather than the top of a search results page. Start with the recognised trade bodies and vetting schemes, then widen the net with personal recommendations and verified review platforms.
Federation of Master Builders (FMB)
The FMB is the UK's largest trade association for construction firms. Members are independently inspected before they join, must carry insurance, and sign up to a code of conduct. The FMB's "Find a Builder" directory lets you search by trade and postcode, and many FMB members can offer an insurance-backed guarantee (IBG) and a formal build contract. It is one of the strongest starting points for extensions and structural work.
TrustMark
TrustMark is the government-endorsed quality scheme covering work in and around the home. TrustMark-registered firms are vetted against technical standards, trading practices and customer service, and the scheme provides a dispute-resolution route if something goes wrong. Look for TrustMark alongside trade-specific bodies such as the NFRC for roofers, Gas Safe for anything involving gas, and NICEIC or NAPIT for electrical work.
Reviews and recommendations
Word of mouth is still the most reliable signal. Ask neighbours, friends and colleagues who have had similar work done recently, and try to see the finished job in person. When you use online reviews, favour platforms that verify the reviewer actually hired the builder, read the middle-ranking reviews rather than just the five-star ones, and be wary of a profile that is either brand new or made up entirely of glowing one-line comments posted on the same few days.
Quote-matching services
A matching service like BestBuilders shortlists vetted local firms for you, so you receive up to three comparable quotes without cold-calling around. It is the fastest way to benchmark price and availability, and every builder you speak to has already passed a basic vetting check. You can request three free builder quotes here and take the comparison from there.
Typical UK project costs at a glance — 2026
Mid-point 2026 costs for common builder jobs, so you can see where your project sits before you compare quotes.
Source: BestBuilders 2026 quote data · 519 UK towns
How to vet a builder before you hire
A directory listing tells you a firm exists; vetting tells you whether it is the right one for your job. Work through the checks below on every shortlisted builder. It takes an evening and can save you tens of thousands of pounds.
Insurance
Every builder should carry public liability insurance of at least £2m, and employer's liability if they have any staff or use subcontractors. Ask for the certificate and check it is current — not lapsed — and that the cover level suits your project. For structural work, ask whether the finished job will be covered by an insurance-backed guarantee so the warranty survives even if the firm later ceases trading.
References and past work
Ask for two or three recent jobs like yours, ideally ones you can visit or at least call the owner about. Speak to those customers directly: ask whether the work finished on time and on budget, whether the site was kept tidy and safe, how variations were handled, and — the acid-test question — whether they would use the builder again. A confident, well-run firm hands over references without hesitation.
Registration, guarantees and accreditations
Confirm the company is what it claims to be. Check the registered company number on Companies House, look up how long it has traded, and verify any scheme membership numbers (FMB, TrustMark, NFRC, Gas Safe, NICEIC) directly with that body rather than trusting a logo on a van. Genuine accreditations can always be confirmed at source.
Full 2026 UK builder rate card
Use this fuller rate card to sanity-check a written quote item by item. Where a builder's figure sits well outside these bands, ask them to explain why before you rule them in or out — there is often a legitimate reason, such as difficult access or a higher specification.
| Item | Typical cost (2026) | Notes |
|---|---|---|
| General builder day rate | £180–£320 per day | Per tradesperson on site |
| Labourer day rate | £120–£180 per day | Groundwork, clearance, support |
| Bricklayer day rate | £180–£280 per day | Or priced per 1,000 bricks |
| Small extension (15m²) | £27,000–£42,000 | Standard spec, shell to finish |
| Larger extension (25m²) | £45,000–£65,000 | See our extension cost guide |
| Loft conversion (dormer) | £45,000–£75,000 | Habitable rooms, Building Regs |
| Kitchen refit (labour and fitting) | £4,500–£12,000 | Units and appliances extra |
| Bathroom refit (labour and fitting) | £3,500–£8,000 | Full strip-out and re-fit |
| Re-roof (typical semi) | £6,000–£12,000 | Strip, felt, batten and re-tile |
| Block-paved driveway (40m²) | £4,000–£8,000 | Excavation, sub-base, edging |
| Structural steel and opening | +£1,500–£4,000 | Beam, install and make-good |
| Architect or technician drawings | £750–£2,500 | See our architect cost guide |
How to compare builder quotes like-for-like
The single most common mistake homeowners make is comparing quotes that are not actually comparable. One builder prices a warm roof; another a cold roof. One includes making-good and decoration; another leaves you with bare plaster. To compare fairly, give every builder the same drawings and the same written scope, and then insist each quote is itemised the same way.
A quote you can trust breaks the job into labour, materials, plant and any provisional sums, states clearly what is excluded, gives a start date and a realistic duration, and sets out a stage-payment schedule. If one quote is dramatically cheaper, it is usually because the scope is thinner — not because the builder is more generous. Line the three quotes up side by side and query every difference before you decide.
| What to compare | Good sign | Warning sign |
|---|---|---|
| Scope detail | Itemised labour, materials and exclusions | One lump-sum figure, no breakdown |
| Specification | Named products and build-ups | Vague "to a good standard" |
| Timescale | Start date and realistic duration | "We can start tomorrow" with no plan |
| Payments | Stage payments tied to milestones | Large deposit demanded up front |
| Price position | Within a sensible band of the others | Far below everyone else |
Regional price differences
Where you live changes the rate as much as the job does. Labour, parking, congestion charges and demand all push prices up in and around London, while parts of the North and Wales sit below the UK average. Judge every quote against local rates, not a national headline number.
| Region | Against UK average |
|---|---|
| London | +20–30% (labour, access, parking) |
| South East and commuter towns | +10–20% |
| Southern and Eastern England | +5–15% |
| Midlands | Around the average |
| North West, Yorkshire | −5–10% |
| North East, South Wales | −10–15% |
A kitchen refit quoted at £6,000 in the North East can pass £8,000 in outer London before any change in specification. Our house extension cost guide breaks the per-m² bands down region by region if you want to dig deeper.
Contracts and stage payments
A good builder expects a written contract; it protects both of you. For anything beyond a day or two of work, put the agreement in writing — the FMB and JCT both publish plain-English domestic building contracts. At a minimum it should record the scope and drawings, the total price, the start date and duration, the payment schedule, how variations are priced, and what happens if either side needs to change the plan.
Pay in stages against completed milestones, never a large sum up front. A modest deposit to secure materials can be reasonable, but avoid anything above roughly 10–15% before work starts, and never pay the final instalment until the snagging list is cleared. Keep every payment traceable through your bank rather than in cash, and hold back a small retention until you are satisfied the job is genuinely finished.
Guarantees and warranties explained
A verbal promise to "come back if anything goes wrong" is worth very little if the firm has closed down by then. For larger jobs, look for a warranty that survives the builder. An insurance-backed guarantee (IBG) is underwritten by a third-party insurer, so the workmanship cover still stands even if the original company ceases trading — many FMB members can offer one. On new structural work you may also want a longer structural warranty from a provider such as an approved warranty scheme, which typically runs for ten years and is often required if you later sell or remortgage.
Read what any guarantee actually covers. A short workmanship guarantee on labour is common and useful, but check the length, whether it is transferable to a future owner, what is excluded, and how a claim is made. Keep the certificate, the contract and your payment records together in one place; if you ever need to claim, that paperwork is what makes it straightforward.
Questions to ask before you hire
A short, direct conversation tells you a great deal about how a builder works. Before you commit, ask each shortlisted firm:
- Have you done this exact type of job recently, and can I see or call about it?
- Will the same team be on site throughout, or do you use subcontractors, and are they insured?
- Who handles Building Regulations and inspections, and is that cost in your quote?
- What is your realistic start date and duration, and what typically causes delays on a job like this?
- How are variations and unexpected problems priced once work is underway?
- What guarantee comes with the work, and is it insurance-backed?
How a builder answers matters as much as the answers themselves. A professional will be calm about being asked, specific in reply, and happy to put the important points in writing. Evasiveness, irritation or vague reassurance at this stage rarely improves once the work starts.
How long it takes to find and book a builder
Good builders are booked up, so plan ahead. Sourcing and vetting a shortlist, arranging site visits and gathering three comparable quotes usually takes two to four weeks. For a small job a reputable firm might start within a few weeks; for an extension or loft conversion, a lead time of two to six months is normal, and the best builders are often booked further out than that. A builder who can start tomorrow on a large project is not necessarily a bargain — ask yourself why they are free at short notice. Building the wait into your timeline lets you choose on quality rather than availability.
Managing the build and snagging
Once work starts, stay involved without micromanaging. Agree a simple way to record any changes — a shared note or email trail — so every variation is priced and agreed before it happens, not argued over at the end. Inspect at each milestone that triggers a payment, and keep the site conversation friendly but businesslike. Near completion, walk the job with the builder and write a snagging list of anything that needs putting right: uneven finishes, missed paintwork, doors that catch, or fittings that are not quite square. Withhold the final payment until that list is genuinely cleared, then keep all your paperwork together in case you ever need the guarantee.
How the hiring process runs
- Define the job — write down exactly what you want done, with drawings if it is structural, so every builder prices the same thing.
- Shortlist vetted firms — pull names from the FMB, TrustMark and recommendations, or use a matching service to line up three vetted local builders.
- Invite site visits — a serious builder measures up in person before quoting; be wary of a price given without a visit.
- Get three itemised quotes — on identical scope, so the numbers are genuinely comparable.
- Check insurance and references — verify cover and speak to two recent customers before you choose.
- Sign a written contract — scope, price, timescale and a stage-payment schedule agreed in writing.
- Manage the build — keep a shared record of variations, inspect at each milestone, and clear snagging before the final payment.
Choosing the builder: checklist
- Ask for two or three recent jobs like yours you can see or phone about — not just general references.
- Confirm £2m+ public liability insurance and check the certificate is current.
- Verify any FMB, TrustMark or trade-body membership directly with that body, not from a logo.
- Get three itemised quotes on identical drawings so the prices are genuinely comparable.
- Insist on a written contract with scope, price, timescale and stage payments.
- Never pay more than 10–15% up front, and hold back the final payment until snagging is done.
Red flags to walk away from
- A quote far below everyone else at the same "finished" spec — something is missing from the scope.
- Pressure for a large cash deposit or a "VAT-free for cash" offer — you lose all protection.
- No written quote, no contract, and a reluctance to be pinned to a start date.
- No verifiable insurance, or accreditation logos that cannot be confirmed with the scheme.
- A price given without a site visit for anything more than a minor repair.
- Reviews that are all brand new, all five-star, and all posted within a few days of each other.
FAQs
Related guides
- Flat roof extension: cost & options
- Extension costs: timber frame vs brick
- House extension cost guide
- Is it worth it? Insights
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