10 Best Electricians in Swansea for 2026

⚡ 10 businesses · 📍 Swansea
✓ Verified Google reviews · ✓ Reviewed regularly · ✓ Updated 23 May 2026
Mark Reid
Written by Mark Reid, Trades Editor · Verified 23 May 2026
Swansea's mix of Victorian terraces in Uplands, modern developments around SA1 Waterfront, and coastal properties in Mumbles creates varied electrical challenges. Many homes still have older wiring systems that need upgrading to meet current safety standards, whilst new-builds often require smart home installations and EV charging points. The city's industrial heritage means some properties have unique electrical setups that need experienced local knowledge.

We've selected these electrical contractors based on their Google ratings, review volume, and trading history. Each business has been verified as actively trading with appropriate insurance and qualifications. We've checked their response times, customer feedback patterns, and whether they're registered with recognised electrical bodies like NICEIC or NAPIT.

Before booking any electrical work, check the contractor is Part P registered for domestic work and carries public liability insurance of at least £2 million. Get written quotes that break down labour and materials separately. For major work like rewiring or consumer unit upgrades, you'll want quotes from two or three different contractors to compare approaches and pricing.
How We Select & Rate The Best Electricians in Swansea

Our selection process analyses Google ratings and review patterns over time, verifies active trading status through Companies House records, and checks professional credentials where applicable. We prioritise businesses with consistent positive feedback and appropriate qualifications. This directory is informational only and not an endorsement. You should still verify credentials, insurance, and get multiple quotes before hiring any electrical contractor.

Quick Comparison — Electricians in Swansea

# Business Rating Reviews Phone
1 Asquith Electrical and Sons LTD Recommended ⭐ 5.0 220 +44 7876 797999 View →
2 Phillips Services (Wales) Ltd Featured ⭐ 4.9 238 +44 1792 653794 View →
3 M&M's Electrical Featured ⭐ 5.0 62 +44 7970 592470 View →
4 Osprey Electrical Engineering Featured ⭐ 5.0 43 +44 1792 747474 View →
5 Fusebox Wales Featured ⭐ 5.0 22 +44 7552 122391 View →
6 Assured Electricians Swansea ⭐ 4.9 19 +44 1792 967344 View →
7 L&W Electrical ⭐ 5.0 14 +44 7730 685618 View →
8 CRJ Electrical (South Wales) Ltd ⭐ 5.0 13 +44 7539 860538 View →
9 CASTLE GRAIG LIMITED ⭐ 4.6 21 +44 7875 537233 View →
10 Bowen Hopkins Ltd ⭐ 5.0 4 +44 1792 581022 View →

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6
Assured Electricians Swansea
4.9 (19 reviews)

Assured Electricians Swansea provides professional electrical services throughout Swansea from their Princess Way premises. The company maintains a strong reputation with a 4.9/5 star rating from 19 verified customer reviews. They serve residential and commercial clients across the Swansea area with reliable electrical installation, maintenance and repair services.

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7
L&W Electrical
5.0 (14 reviews)

L&W Electrical provides professional electrical services throughout Swansea, earning a perfect 5-star rating from 14 verified customer reviews. The company handles a comprehensive range of electrical work for residential and commercial clients across the local area.

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8
CRJ Electrical (South Wales) Ltd
5.0 (13 reviews)

CRJ Electrical (South Wales) Ltd provides professional electrical services throughout Swansea and the surrounding South Wales area from their Sketty base. The company has earned a perfect 5-star rating from 13 verified customer reviews, reflecting their commitment to reliable workmanship and customer service. Their qualified electricians handle a full range of domestic and commercial electrical installations, repairs, and maintenance work across the region.

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9
CASTLE GRAIG LIMITED
4.6 (21 reviews)

Castle Graig Limited provides electrical services to customers in Swansea and the surrounding areas from their base in Tre-boeth. The company has earned a strong reputation with a 4.6 out of 5 star rating based on 21 verified customer reviews. Their website at castlegraigelectrical.co.uk offers further information about their electrical work and services.

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10
Bowen Hopkins Ltd
5.0 (4 reviews)

Bowen Hopkins Ltd provides electrical services to customers across Swansea from their base in Fforest-fach. The company has earned a 5-star rating from 4 verified customer reviews on Google. Their website at bowenhopkins.co.uk offers additional information about their electrical contracting services.

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Transparency notice: Recommended (#1) and Featured (positions 2-5) listings may be paid placements. All other rankings are determined by a combined score drawn from Google ratings, review counts, and reputation signals gathered from multiple independent online sources. How we verify →

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Frequently Asked Questions

How much does an electrician cost in Swansea?
Hourly rates typically range from £45-65 for qualified electricians in Swansea. Small jobs like fitting new sockets or light switches usually cost £80-150, whilst rewiring a three-bedroom terrace runs £3,000-5,000 depending on access and specification. Consumer unit upgrades start around £400-600. Emergency call-outs often carry surcharges of £50-100. Always get written quotes and compare at least two or three contractors for larger jobs.
Do I need Part P certification for electrical work in my Swansea home?
Yes, most electrical work in homes requires Part P compliance under Building Regulations. This includes new circuits, consumer unit changes, and work in kitchens or bathrooms. Only registered electricians can self-certify this work. If you use an unregistered contractor, you'll need separate Building Control approval which adds cost and delays. Always check your electrician is registered with NICEIC, NAPIT, or similar before starting work.
How long does rewiring take in a typical Swansea house?
A three-bedroom Victorian terrace typically takes 5-7 working days for a full rewire, depending on accessibility and whether you're living in the property. Modern houses are often quicker at 3-5 days. The process involves lifting floorboards, chasing walls, and extensive plastering repairs afterwards. Many Swansea electricians coordinate with plasterers to minimise disruption. Expect some mess and plan temporary accommodation if needed.
Can electricians install EV charging points in Swansea?
Most qualified electricians can install home EV chargers, but they need additional certification for government grant schemes. Installation costs range from £800-1,200 including the unit, depending on your existing electrical setup and cable run length. Your consumer unit may need upgrading first. Check if your chosen electrician is OLEV-approved if you want to claim the government grant towards installation costs.
What electrical problems are common in older Swansea properties?
Victorian and Edwardian houses often have outdated wiring with old-style fuse boxes, insufficient earthing, and too few power points for modern needs. Damp issues near the coast can affect electrical installations. Many properties need consumer unit upgrades to meet current safety standards. Extension wiring is sometimes done poorly in older conversions. A periodic inspection every 10 years helps identify problems before they become dangerous.
How do I verify an electrician's qualifications before hiring?
Check they're registered with NICEIC, NAPIT, or ELECSA by searching online databases using their registration number. Ask to see their qualification certificates and current insurance documents. Verify their business exists through Companies House if they're a limited company. Look up recent reviews on Google and check they have a proper business address, not just a mobile number. Don't pay large amounts upfront.