Written by Mark Reid,
Trades Editor ·Verified 5 October 2026
Cardiff's housing stock does a lot to shape the electrical work people need. Victorian and Edwardian terraces in Cathays, Roath, Canton and Splott often still have patched-together wiring from several decades of DIY and half-finished upgrades, so rewires and fuse board replacements are a steady part of the trade. Out in Llanishen, Whitchurch and Rhiwbina, the 1930s semis and post-war estates tend to need new consumer units, extra sockets and loft or kitchen circuits. Newer flats around Cardiff Bay and the city centre bring their own jobs, such as EICRs for landlords, emergency lighting and communal supply faults. Add the steady demand from student lets and a big private rental sector, and you'll find most local electricians split their week between domestic callouts, landlord paperwork and a growing number of EV charger installs.
The businesses on this page are drawn from third-party business listings and ranked by public review rating and review count, with a small lift for those showing a working website and phone number. We read each business's homepage to confirm electrical work is what they primarily offer, which keeps unrelated trades off the page. Listings flagged as permanently closed are removed automatically. Where you see a Trust Verified badge, that business has additionally 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 the full list. If a business doesn't carry the badge, we haven't independently verified it, so the checks on credentials, insurance and history are yours to do before you book.
Start by asking for a written, itemised quote, and get two or three so you can see what's being included. Ask whether the electrician is registered with a relevant trade accreditation scheme, then check that registration yourself with the scheme directly. For anything notifiable, such as a new consumer unit or a new circuit in a kitchen or bathroom, you should receive an Electrical Installation Certificate or Minor Works Certificate, plus confirmation of Building Regulations notification. Landlords will want an EICR, and you should keep it on file. Ask to see proof of public liability insurance, and be wary of anyone who wants a large cash deposit upfront or can't tell you how long the job will take.
How We Select & Rate The Best Electricians in Cardiff
Businesses on this page are ranked mainly by public review rating and review count taken from third-party business listings, with a small lift for those showing a working website and phone number. We read each homepage to confirm electrical work is what the business primarily offers. Permanently closed listings are removed automatically. Businesses marked Trust Verified have additionally passed our full verification covering qualifications, insurance, trading history, customer review history and registered company information. Our How We Verify page has the full list. Other businesses here have not been independently verified by us, and inclusion is not 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 →
Assured Electrical Solutions provides professional electrical services to customers throughout Cardiff from their Pontcanna base. The company handles domestic and commercial electrical work. Their qualified electricians serve Cardiff neighbourhoods with reliable electrical installations, repairs, and maintenance services.
12 Electrical & Emergency Electrician provides comprehensive electrical services to Cardiff and surrounding areas, operating from their Pontcanna base. The company handles both routine electrical work and emergency call-outs for residential and commercial clients.
APP Electrical Ltd is an electrical contractor in Cardiff handling both domestic and commercial work. The company covers a range of electrical installations and repairs throughout the city.
Electricall South Wales provides professional electrical services throughout Cardiff and the surrounding South Wales region. The company handles residential and commercial electrical work, with their skilled electricians offering installation, repair, and maintenance services.
Lightwork Electrical provides comprehensive electrical services throughout Cardiff. The company handles both residential and commercial electrical work, delivering reliable solutions for local homes and businesses across the Welsh capital.
J. Rees Electrical Ltd provides comprehensive electrical services throughout Cardiff. The company handles both residential and commercial electrical work, offering reliable solutions for installations, repairs, and maintenance.
GABE Electrical Ltd provides comprehensive electrical services across Cardiff, handling everything from domestic installations to commercial electrical work. Their qualified electricians serve residential and business clients throughout the Cardiff area with a full range of electrical solutions.
Reliable Electrician provides electrical services throughout Cardiff, handling domestic and commercial installations, repairs, and maintenance work. Their qualified electricians serve homes and businesses across the Cardiff area with reliable electrical solutions.
Heathwood Electrics provides professional electrical services to customers across Cardiff, covering both residential and commercial electrical work. They serve Cardiff and its surrounding districts with a comprehensive range of electrical solutions.
NDL Electrical Limited provides professional electrical services throughout Cardiff from their base in Rumney. Their experienced electricians handle a range of electrical installations, repairs, and maintenance work for residential and commercial clients across the Cardiff area.
SP Electrical (South Wales) provides professional electrical services to homes and businesses across Cardiff from their base in Birchgrove. Their qualified electricians handle installations, repairs, and maintenance work throughout the Cardiff area.
Cardiff Electrical Home Rewire Ltd provides electrical services throughout Cardiff, specialising in domestic rewiring projects for homeowners. Their qualified electricians handle various electrical installations and repairs for residential properties.
CAG Electrical Ltd provides professional electrical services to clients across Cardiff. The company handles residential and commercial electrical work throughout the local area.
Sonik Electrical provides professional electrical services to residential and commercial clients across Cardiff. Their qualified electricians handle installations, repairs, and maintenance work throughout the Cardiff area.
Cardiff-Electrician.com provides electrical services throughout Cardiff. They handle domestic and commercial electrical work across the city and surrounding areas.
Gavin Owen Electrical Services provides professional electrical work throughout Cardiff. They handle domestic and commercial electrical installations, repairs, and maintenance for properties across the Cardiff area.
Robertsons Electrical Ltd covers domestic and commercial electrical work across Cardiff and the surrounding areas. The company handles installation, maintenance, and fault-finding work, offering a practical, no-nonsense service to homeowners and businesses alike.
Pierce Electric provides electrical services throughout Cardiff. The company offers professional electrical work for residential and commercial clients across the local area and has an established online presence.
Electrical work across Cardiff and the surrounding area is handled by Lectogic Ltd, a contractor covering both domestic and commercial projects. The company operates from a South Wales base, serving clients across the region. Its website outlines the scope of work undertaken, from installation to maintenance.
Electrical contractor covering Cardiff and the surrounding area, CJS Electrical handles domestic and commercial installation, maintenance, and repair work. The business serves both central Cardiff and the northern suburbs. The company's established web presence reflects a settled local operation.
M+B Electrics provides professional electrical services from their base in Rumney, Cardiff, serving clients across the area and surrounding districts. Their team handles a range of electrical installations, repairs and maintenance work for residential and commercial properties throughout Cardiff.
M D T Electrical Ltd provides professional electrical services throughout Cardiff. The company carries out work for both residential and commercial clients.
Evans Electrical Ltd provides professional electrical services from their base in Pen-y-lan, Cardiff. They offer comprehensive electrical solutions for both domestic and commercial clients across the Cardiff area and surrounding neighbourhoods.
Be Assured Electrical provides professional electrical services to customers across Cardiff from their Pontcanna base. Their experienced electricians handle both residential and commercial electrical installations, repairs, and maintenance throughout the Cardiff area.
Dragon Electrics Ltd provides electrical services across Cardiff and Penarth. The company delivers professional solutions for residential and commercial properties throughout the local area.
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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Hourly rates in Cardiff usually run from about £40 to £70, and some firms charge a day rate of £250 to £400 instead. A like-for-like consumer unit replacement typically costs £450 to £900 depending on the number of circuits. A full rewire of a three-bed terrace tends to land between £3,500 and £6,500, and a larger semi can go higher. An EICR for a flat is often £120 to £200, rising for bigger houses. Prices vary with access, how much plastering and making good is needed, and the age of the existing wiring. Get two or three itemised quotes and compare what each one includes.
Do I need an electrician to be registered with a scheme like NICEIC or NAPIT?
There's no legal requirement for an electrician to belong to a scheme, but in England and Wales most notifiable work has to comply with Building Regulations. A registered electrician can self-certify that work and issue the paperwork. Without registration, you may need to pay your local authority building control to inspect it. Ask which scheme they're with and check the registration on the scheme's own website rather than relying on a logo.
What paperwork should I get after electrical work?
For new circuits or a consumer unit change you should receive an Electrical Installation Certificate, and for smaller jobs a Minor Electrical Installation Works Certificate. Notifiable work should also come with a Building Regulations compliance certificate, which may arrive a few weeks later. Keep everything together, because buyers' solicitors often ask for it when you sell. Landlords need a current EICR for each rented property.
How long does a rewire take, and will I have to move out?
A typical three-bed house takes five to ten working days, with power off during working hours but usually restored each evening for essentials. Many people stay put, though it's dusty and floors come up. A full rewire is far quicker in an empty property, so if you're renovating, do it before you decorate. Ask for a start date, a finish estimate and who's responsible for plastering and redecorating afterwards.
Can electricians in Cardiff install EV chargers?
Yes, and it's now a routine job. A standard 7kW home charger usually costs £900 to £1,500 fitted, depending on cable run length and whether your consumer unit needs upgrading. Houses without off-street parking, which is common in the terraces of Cathays and Roath, can be tricky, so check what's allowed before you buy a car. Ask the installer whether they'll handle the DNO notification and what grants or schemes might apply.
How do I choose between electricians who all seem similar?
Compare the detail, not just the total. Check that each quote lists the work, materials, certificates and how long it will take. Read recent Google reviews for patterns, such as turning up on time and tidying up. Ask for proof of public liability insurance and confirm any accreditation with the scheme directly. A Trust Verified badge on this page means we've checked those things, but for any business without one, you'll need to do the checks yourself. Be cautious of vague quotes, pressure to pay cash, or anyone who won't commit to issuing certificates.
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