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South East England

Vetting builders in Brighton

A practical checklist for vetting builders in Brighton — including the documents to demand, the red flags to refuse, and how to cross-check against verified South East England pricing.

Local context — Brighton

Council
Brighton & Hove City Council
Open planning portal →
Cost premium
+6% vs UK average (South Coast labour premium + restricted access)
Typical extension price
A 25 m² single-storey rear extension in Brighton & Hove typically runs £60,000-£88,000 (standard to premium, 2026). Lower-ground-floor extensions in Regency squares (Kemptown, Hove) run £75,000-£120,000.
Building Control
Brighton & Hove Building Control is the council's in-house service; lead time 3-5 working days. Tight planning policy and 34 conservation areas push many homeowners to use private AIs for predictability.
Conservation & Article 4
Brighton & Hove has 34 conservation areas covering ~28% of the city — including all of Kemptown, Brunswick Town, Montpelier, Clifton Hill, Old Town and Preston Park. Article 4 directions are extensive; assume PD rights are removed in any pre-1939 street until confirmed otherwise.
Local quirks that move the price
Chalk subsoil across most of the city means foundations are usually shallow but always need an engineer's check for solution features. Coastal salt exposure south of the A259 requires 316-grade stainless fixings and pre-treated timber. Skip permits are heavily restricted in CPZ areas — expect £45-75/day plus suspension fees. Listed-building density in Kemptown means LBC is often needed even for internal works.
High-demand areas in Brighton
KemptownHovePreston ParkFivewaysHanover

Documents every builder must produce

Public liability insurance (£2m minimum, £5m for structural work). Employer's liability if they use subcontractors. Company registration number (Companies House). VAT number if billing over £90k. Two recent customer references with phone numbers, ideally from the last 12 months. No documents = no shortlist.

Trade-body accreditations worth checking in Brighton

FMB (Federation of Master Builders), TrustMark, Gas Safe (any gas work), NICEIC or NAPIT (electrics), Which? Trusted Trader. Membership alone isn't enough — verify the certificate number on the body's website.

Cross-checking the quote

Get three quotes minimum. Run the project through BuildPriceIQ's cost checker to anchor the fair market price. If a quote is more than 20% above the benchmark and the builder can't justify the line items, walk. If it's more than 15% below, walk faster — they're either inexperienced or building in variations later.

Contract & payment red flags

No written contract. Cash-only. More than 15% deposit. Demands for full payment before second-fix. Refusal to use a Stage Payment Schedule. Any of these = stop the meeting.

Get the Brighton vetting builders checklist

Free PDF with the full vetting builders checklist for Brighton homeowners — straight to your inbox.

FAQs about vetting builders in Brighton

What deposit is normal in the UK?

For projects over £25k: 5–10% on signing the contract, with the rest released against stage completion. Anything over 15% upfront is high. Material deposits (e.g. for bespoke windows) are sometimes legitimate — get those invoiced directly from the supplier.

How do I find vetted builders in Brighton?

Use BuildPriceIQ's verified builder directory — every listed firm in Brighton has been ID-checked, insurance-verified and rated by past clients. You can compare them side-by-side against an estimate tuned to South East England pricing.

What if a builder asks for a "variation" mid-project?

Variations are normal — but every one must be priced in writing and signed BEFORE work starts. Verbal "I'll add it to the bill" is the number-one cause of cost blowouts.

More Brighton guides

Planning permission in BrightonBuild timeline in BrightonSave on renovation in Brighton

Vetting builders in other UK cities

LondonCroydonEalingEnfieldBromleyBarnet

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Disclaimer: This is an industry-informed estimate for guidance only. Build Price IQ (trading under Services R Us Ltd) accepts no liability for any decisions, costs, losses or damages arising from its use. Always verify with a site inspection and written quotes from qualified tradespeople before committing to work.