✓ Verified Google reviews·✓ Reviewed regularly·✓ Updated 31 August 2026
Written by Mark Reid,
Trades Editor ·Verified 31 August 2026
Margate's mix of housing keeps its builders busy with all sorts of jobs. You've got the tall Victorian terraces around Cliftonville and the Old Town, some with tricky bay window extensions or sash windows that need careful attention, plus newer estates out towards Westbrook and Garlinge where loft conversions and rear extensions are more common. Then there's the seafront properties, which take a battering from salt air and wind, so repointing and render repairs come up a lot. A builder who knows the area will understand which streets have shared party walls to worry about, where clay soil might affect foundations, and how planning rules apply if a property sits near the conservation areas around the Old Town or Cliftonville's listed buildings.
The businesses featured here come from public business listings, ranked mainly by their review rating and how many reviews they've got, with a small boost given to those with a working website and contact number. We read through each firm's homepage to check that building work is genuinely their main trade, not something they dabble in alongside another job, which helps keep unrelated tradespeople off this page. Listings that show up as permanently closed get removed as part of this process. Where you spot a Trust Verified badge, that business has gone through our fuller verification, covering trade qualifications and accreditations, public liability insurance, trading history, customer review history, and registered company information. Our How We Verify page sets out exactly what that involves. For businesses without the badge, none of that has been independently checked by us, so it's worth doing that homework yourself before signing anything.
Before hiring, ask to see a builder's public liability insurance certificate and, if the job involves gas or electrics, confirm they're using a Gas Safe registered engineer or a qualified electrician for that part of the work. Get a written quote that breaks down labour and materials separately, and ask about timescales in writing too, delays happen but a decent builder should give you a realistic estimate upfront. It's worth getting at least two or three quotes for anything beyond small repair jobs, since prices for the same extension or loft conversion can vary by several thousand pounds between firms. Check recent reviews, ask for photos of similar completed jobs, and if you can, speak to a previous customer directly.
How We Select & Rate The Best Builders in Margate
Ranking is driven mainly by review rating and review count pulled from public business listings, with a small lift given to businesses showing a working website and phone number. We check each business's homepage to confirm building work is what they primarily do, which keeps unrelated trades off the page. Listings flagged as permanently closed are removed automatically. Businesses marked Trust Verified have gone further, passing our full verification covering qualifications and accreditations, public liability insurance, trading history, customer review history, and registered company information, detailed on our How We Verify page. Other businesses listed haven't been independently verified by us, and being included isn't an endorsement. Always do 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 →
A perfect 5-star rating from 25 reviews sets CSL Construction Limited apart among builders serving Margate. That consistency suggests reliable workmanship across the building projects it takes on, from groundwork to structural jobs. Enquiries can be made through the company's website for anyone weighing up a local contractor with a proven track record.
Families across Margate looking to extend or renovate their properties turn to LF Properties for building work carried out to a practical, straightforward standard. The firm holds a five-star record from 17 reviews, reflecting consistent workmanship on residential projects in the CT9 area. Work is arranged directly with clients rather than through subcontracted layers, keeping communication simple throughout.
Residential and commercial clients across Margate turn to Valden Construction for building work ranging from extensions and renovations to new builds. The company holds a five-star rating across fifteen Google reviews, reflecting consistent work on local projects. CT9 4DZ serves as its base for covering the wider Thanet area.
CT11 Construction takes on extensions and renovations for the terraced and Victorian housing common around Margate, alongside smaller-scale new build work. Jobs typically involve structural alterations rather than cosmetic finishes, reflecting the age of much of the local housing stock. Ten reviews on Google have averaged a full five stars.
Families across Margate looking to extend or renovate their properties call on A. Carter Developments Ltd for general building work. The firm covers structural jobs and refurbishments, working directly with households to plan projects around their homes rather than offering off-the-shelf packages. Further details of past work can be found via their Checkatrade profile.
Margate and the surrounding coastline fall within reach of Techno Timber Construction, a builder working on timber-frame projects and general construction. The CT9 4PJ-based firm has built up a 4.3 rating from local clients, reflecting steady work across the area rather than one-off jobs.
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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It depends heavily on the job. A small repair or repointing job might run £300 to £800, while a single-storey rear extension in Margate typically costs £1,500 to £2,200 per square metre depending on finish and access. Loft conversions often land between £30,000 and £50,000 for a dormer conversion, less for a simple rooflight version. Older properties near the seafront sometimes cost more due to damp-proofing or render repairs needed first. Getting two or three quotes is standard practice and helps you spot if someone's pricing way outside the norm.
Do I need planning permission for an extension in Margate?
Many single-storey extensions fall under permitted development rights and don't need full planning permission, but this changes if your property is in a conservation area, which covers parts of the Old Town and Cliftonville, or if it's a listed building. Thanet District Council can confirm whether your project needs an application. A good builder will usually flag this early and can point you towards a planning consultant if needed, but it's ultimately your responsibility to check before work starts.
How long does a typical building project take?
A kitchen extension usually takes six to ten weeks once work starts, though groundwork and weather can add delays. Loft conversions often take four to eight weeks. Smaller jobs like a garden wall or repointing might be done in a few days. Ask your builder for a realistic timeline in writing before you agree anything, and build in some flexibility, especially for older Margate properties where unexpected issues like damp or old wiring sometimes turn up once walls are opened.
Should I pay a deposit before work starts?
A reasonable deposit, often around 10 to 25 percent, is normal for larger jobs to cover materials, but be wary of anyone asking for the full amount upfront. Stage payments tied to project milestones work better for both sides. Always get payment terms in writing as part of your contract, and avoid paying cash in hand without a receipt, since this leaves you with no proof if something goes wrong.
What paperwork should I get once the work is finished?
Ask for a written completion certificate or sign-off, particularly for structural work, electrics, or gas installations, which need Building Regulations approval. If a Gas Safe engineer did any boiler or gas pipework, request their certificate for your records. Keep copies of all invoices, warranties on materials, and any guarantees the builder offers on their workmanship, usually somewhere between one and ten years depending on the job.
How do I choose between builders in Margate?
Start by checking recent reviews on public listings and asking for photos of similar completed projects nearby. Confirm their public liability insurance is current and ask if they're a member of a trade body like the Federation of Master Builders, which has its own vetting process. Request references from past customers and actually call them. Get written quotes from at least two or three builders so you can compare pricing and timescales properly, and trust your instincts if someone's reluctant to answer basic questions upfront.
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