South Wales
123 Builders in Swansea
Local builders covering Swansea and surrounding areas. Also known as building contractors or construction firms. Real businesses, checked against public records. Free to browse.
Builders in Swansea at a glance
123 builders are listed for Swansea, South Wales. 13 of the 20 shown hold a Google rating, averaging 4.8 out of 5 across 164 reviews. 15 are registered at Companies House, 10 shown as active on the register. The typical business has traded for 5 years.
Ratings and review counts are Google's, as published on each business's Google listing, and link there. Companies House status and founding year are as the register reports them, and link to the register. Figures cover the 20 businesses shown.
Browse builders in Swansea, South Wales. Every listing is sourced from public records and checked against Companies House and Google Business Profile. Ask for FMB or TrustMark credentials when choosing a builder, and verify them with the issuing body. All contact details are visible after a business claims its listing.
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Top 20 of 123 businesses
Herms Construction
VerifiedHerms Construction is a builder in Swansea, rated 5/5 from 12 Google reviews. Registered with Companies House (no. 14432413) and c…
J LYNCH BUILDING LIMITED
VerifiedJ Lynch Building Ltd is an established Swansea-based building contractor specialising in high-quality house extensions, full prope…
A-L-R INSTALLATION GROUP LTD
CAMBRICA TIMBER FRAMES LIMITED
A.L.R Installations LTD Swansea
A.L.R Installations LTD Swansea is a builder in Swansea, rated 5/5 from 4 Google reviews.
A S Construction wales
A S Construction wales is a builder in Swansea, rated 5/5 from 1 Google review.
PAS
PAS is a builder in Swansea, rated 5/5 from 13 Google reviews. Verified Google Business Profile.
Bancs Building Contractors
Bancs Building Contractors is a builder in Swansea, rated 5/5 from 8 Google reviews.
Premier Forecourts and Construction
Premier Forecourts and Construction is a builder in Swansea, rated 4.7/5 from 12 Google reviews. Registered with Companies House (…
Bambridge Loft Conversions
Bambridge Loft Conversions is a builder in Swansea, rated 4.9/5 from 40 Google reviews. Verified Google Business Profile.
K&R Construction Ltd
K&R Construction Ltd is a builder in Swansea, rated 4.6/5 from 22 Google reviews. Registered with Companies House (no. 10568809) a…
Tilbury Douglas Construction Ltd
Tilbury Douglas Construction Ltd is a builder in Swansea, rated 4.7/5 from 6 Google reviews. Registered with Companies House (no. …
John Weaver (Contractors) Ltd
John Weaver (Contractors) Ltd is a builder in Swansea, rated 3.9/5 from 7 Google reviews. Registered with Companies House (no. 009…
Atrium Construction
Atrium Construction is a builder in Swansea, rated 5/5 from 9 Google reviews. Registered with Companies House (no. 14111063) and c…
Castell Group Ltd
Castell Group Ltd is a builder in Swansea, rated 5/5 from 2 Google reviews. Registered with Companies House (no. 11990055) and cur…
Builder guides for Swansea
Areas covered for builders in Swansea
Builders listed for Swansea typically cover the SA1, SA2, SA3, SA4, SA5, SA6, SA7, SA8 postcode areas and surrounding parts of South Wales. Service radius varies per business, many also work in adjacent towns and villages within the same postcode group.
Including Swansea City Centre, St Thomas, Maritime Quarter, Sandfields, Brynmill, Uplands, Sketty, Killay, Tycoch, Mumbles, Oystermouth, Gower, Bishopston, Caswell, Langland, Llanelli East, Pontarddulais, Gorseinon, Loughor, Cwmbwrla, Manselton, Townhill, Fforestfach and Morriston.
Builders in nearby towns
Common builders services in Swansea
Swansea covers everything from the Mumbles coastline to inland industrial Llansamlet, local trades typically specialise by area, with Gower (SA3) work often involving listed-building or AONB constraints. Building Regs sign-off goes through Swansea Council.
Listed builders in Swansea typically cover the following work. Scopes vary per business, request a free quote on any specific job above.
- Internal wall removal (load-bearing)
- House extensions (single and two-storey)
- Conservatory and orangery installation
- Damp and structural repairs
- Renovations and refurbishments
- Loft conversions (dormer, hip-to-gable, Velux)
- New build construction
- Garage conversions
- Project management
- Underpinning and foundation work
Not sure what FMB means or how to verify it? Read the plain-English definition →
Looking wider? Browse all builders across South Wales: covers Cardiff, Swansea, Newport, Barry and 15+ more towns.
Common questions about builders in Swansea
How much do builders charge in Swansea?+
Builder costs in Swansea vary by job type and complexity. For an accurate quote, request a free estimate from a listed business above. Most builders offer free site visits before quoting.
What accreditations should a builder in Swansea have?+
Reputable builders in Swansea should hold relevant accreditations such as FMB · TrustMark · NHBC. We do not verify accreditation body membership, so always ask to see credentials and check them against the issuing body's own register before hiring.
How do I find a reliable builder in Swansea?+
Browse the builders listed above, each has been added from public records and verified sources. Look for the Verified or Premium badge, check their accreditations, and read any reviews shown on their profile.
How quickly can I get a builder in Swansea?+
Response times vary. For routine work, most builders in Swansea can schedule within a few days. For urgent or emergency work, contact businesses directly, some offer same-day or 24/7 callouts.
Are builders in Swansea regulated?+
Yes. Depending on the trade, builders in Wales must comply with UK building regulations and may require registration with bodies such as FMB · TrustMark · NHBC. Always confirm a tradesperson's credentials before work begins.
Do builders in Swansea cover surrounding areas?+
Most builders listed for Swansea also cover nearby towns in South Wales. Service radius varies, check each business profile for their declared coverage area, or use the "Builders nearby" chips at the top of this page to browse adjacent towns directly.
Is it free to use besttrades.wales to find a builder?+
Yes, completely free for homeowners. No booking fees, no sign-up required to browse listings or request quotes. Tradespeople pay nothing to claim their listing either. besttrades.wales is an independent Welsh trade directory, not a paid lead-resale service.
How is a builder on besttrades.wales verified?+
Every listing is cross-checked against public records: Google Business Profile for review history and location, and Companies House for active registration where applicable. We do not check accreditation body membership — ask the business for its registration number and verify it on the issuing body's own register.