Written by Mark Reid,
Trades Editor ·Verified 23 September 2026
Swansea's housing stock throws up a fair few plumbing quirks. You've got Victorian terraces around Sandfields and Brynmill with original lead or cast iron pipework still lurking behind walls, post-war semis in Sketty and Killay with airing cupboard cylinders that eventually need swapping for combi boilers, and newer builds out towards Llansamlet and the SA1 waterfront where underfloor heating and unvented systems are more common. Add in the area's exposed coastal position, which means driving rain and salt air can play havoc with outdoor pipework and guttering, and you can see why local knowledge matters when something goes wrong with your stopcock or your boiler starts kettling. A plumber who already knows how Townhill's steep terraces affect drainage falls, or why properties near the Tawe flood plain need certain non-return valves, saves you time explaining the basics.
The businesses featured here come from public business listings, ranked mainly on review rating and how many reviews they've built up, with a modest boost for those that have a working website and a live phone number, since that tends to indicate an active, contactable operation. We then read each business's homepage to check that plumbing is genuinely their main trade, which stops gas engineers, general builders or unrelated tradespeople sneaking onto a plumbers page. Any listing flagged as permanently closed gets stripped out automatically. Where you spot a Trust Verified badge, that business has gone further and passed our full 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 legwork yourself before booking anything.
Before you commit to a plumber, ask to see their Gas Safe registration number if the job touches a boiler or gas appliance, and check it against the online register yourself rather than just taking their word for it. Ask what the call-out charge covers, whether parts are included in any quoted price, and whether they'll put the job in writing before starting. For bigger work like a bathroom refit or a new boiler installation, get two or three quotes rather than accepting the first one, since prices for the same job can vary by hundreds of pounds across Swansea depending on how busy a firm is. And always ask how they handle problems that crop up after the job, such as a leak reappearing a few weeks later.
How We Select & Rate The Best Plumbers in Swansea
Rankings are driven 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 plumbing work is what they primarily do, which keeps unrelated trades off this page. Listings flagged as permanently closed 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. Other businesses here haven't been independently verified by us, and appearing on this page isn't an endorsement. 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 →
Plumbing services covering Swansea and the surrounding area, RM Blake Ltd handles domestic and commercial work across the SA7 postcode and beyond. The company operates as a limited entity, bringing a degree of accountability that sole traders cannot always offer. Residents and businesses in the locality have a straightforward point of contact for plumbing requirements without the overhead of a larger contractor.
Rated 4.7 stars across 15 Google reviews, James Morgan Plumbing & Heating serves residential and commercial customers across Swansea. The company covers plumbing repairs, installations, and heating systems. A consistently strong rating from a growing number of local reviewers points to reliable, straightforward work rather than the kind of promises that rarely survive contact with a burst pipe.
A plumbing and gas service operating across Swansea, LDA Plumbing & Gas covers domestic installations, repairs, and gas work for local households. The business holds a perfect five-star rating across its Google reviews, reflecting consistent work on the jobs it takes on. Residents in the area can contact the company directly through its website for enquiries and bookings.
Swansea households and commercial properties can call on Prestige Plumbing Swansea for local plumbing work across the city. The company holds a 4.5-star Google rating from 16 reviews, reflecting a reasonable track record among local clients. General plumbing installations, repairs, and maintenance form the core of their offer.
Everest Mechanical Services Limited, trading as EMS, covers bathroom remodelling alongside plumbing, gas engineering, and heating installation from its Swansea base. The business presents itself as a mechanical services contractor rather than a specialist bathroom showroom, reflecting a scope that extends well beyond fitting alone. SA1 3PP serves as its registered location.
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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A basic call-out for a leaking tap or running toilet typically runs £60 to £100 for the first hour in and around Swansea, with many firms charging £40 to £70 per hour after that. Bigger jobs vary a lot: fitting a new boiler usually costs £1,800 to £3,500 including parts and labour, while a full bathroom re-plumb can run from £1,500 up to £4,000 depending on how much pipework needs moving. Older properties in areas like Uplands or Morriston, where pipework is harder to access, often push costs towards the higher end. It's normal to get two or three quotes before agreeing to anything, especially for jobs over a few hundred pounds.
Do I need a Gas Safe registered plumber for boiler work in Swansea?
Yes, if the job involves a gas boiler, gas fire or any gas appliance, the person doing the work must be Gas Safe registered by law, not just a general plumber. Ask for their Gas Safe ID card and check the registration number on the official Gas Safe Register website before letting anyone touch a gas appliance. General plumbing work like unblocking drains, fitting taps or fixing leaks doesn't require this, but boiler servicing and installation absolutely does.
How quickly can a plumber in Swansea deal with an emergency leak?
Most local plumbers offering emergency call-outs aim to get to you within one to three hours, though this depends heavily on time of day and how far out you are, with rural spots towards Gower typically taking longer than central Swansea or Morriston. Before anyone arrives, find your stopcock and turn off the water supply to limit damage. Expect to pay a premium for out-of-hours or weekend call-outs, often an extra £20 to £50 on top of the standard rate.
What's the difference between a plumber and a heating engineer?
A plumber typically handles pipework, taps, toilets, leaks, drainage and bathroom installations, while a heating engineer specialises in boilers, central heating systems and radiators, and usually needs Gas Safe registration for gas work. Many tradespeople in Swansea cover both, describing themselves as plumbing and heating engineers, but for anything involving a gas boiler specifically, confirm they hold the right Gas Safe qualification rather than assuming general plumbing experience covers it.
Should I get a written quote before work starts?
Yes, always ask for a written quote rather than a verbal estimate, even for smaller jobs. It should set out labour costs, materials, and whether VAT is included. This protects you if there's a dispute later and makes it easier to compare quotes from different plumbers fairly. For larger jobs like re-piping a house or fitting a new bathroom suite, a written schedule of work with rough timescales is worth asking for too.
How do I choose between plumbers in Swansea before booking?
Start by reading recent reviews rather than just the overall star rating, since a plumber with 200 reviews at 4.3 stars often tells you more than one with 12 reviews at 5 stars. Check they hold Gas Safe registration if the job needs it, by searching their registration number on the official register yourself. Ask about public liability insurance and request proof rather than assuming it's in place. Look for a business with a fixed address or landline, not just a mobile number, as this often indicates a more established operation. Finally, get quotes from at least two or three plumbers for anything beyond a simple repair, and ask each one the same questions so you can compare properly.
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