One of the most common questions we hear from Cardiff homeowners is: how much will a rewire actually cost? The answer depends on several factors, but we believe in transparent pricing — so here is a detailed guide based on our real-world project costs across Cardiff and South Wales in 2025.
Average House Rewire Costs in Cardiff (2025)
- 2-bed terraced house (Splott, Adamsdown, Grangetown): £2,800 – £3,800
- 3-bed semi-detached (Whitchurch, Rhiwbina, Llandaff): £3,500 – £5,500
- 4-bed detached (Cyncoed, Radyr, Lisvane): £5,000 – £7,500
- Victorian/Edwardian terrace (Pontcanna, Canton): £3,800 – £6,000
These prices include a new 18th Edition consumer unit with RCD or RCBO protection, all new cables throughout, sockets, switches, and light fittings. Critically, our quotes also include filled chases as standard — saving you the separate cost of a plasterer, which typically adds £500–£1,200 with other electricians.
What Factors Affect the Cost?
The main factors that drive rewire costs in Cardiff are property size (number of rooms and floors), property age and construction type, accessibility of cable routes, the number of circuits required, and any additional work such as EV charger circuits or data cabling.
Older Cardiff properties — particularly Victorian terraces in Pontcanna and Canton, or Edwardian villas in Llandaff — often cost more because solid walls require careful chase cutting, and existing cable routes may be unsuitable for modern wiring. Cavity-wall 1930s semis in Whitchurch and Rhiwbina are typically more straightforward and cost-effective to rewire.
What Is Included in Our Rewire Price?
- Full removal of all old wiring
- New Twin & Earth cabling throughout
- New 18th Edition metal-clad consumer unit
- All sockets, switches, and light fittings
- Chases cut, cabled, and filled flush — ready for decoration
- Cat6 data cabling to key rooms
- Dedicated 32A circuit for future EV charger
- Full testing and Electrical Installation Certificate
- NICEIC registration and Part P building control notification
- 6-year workmanship guarantee
How to Get an Accurate Quote
Online estimates can only give you a rough idea. The only way to get an accurate, fixed-price quote for your specific property is through an on-site survey. We offer free, no-obligation surveys across Cardiff and South Wales — we visit your property, assess the installation, discuss your requirements, and provide a detailed written quote within 24 hours.
Get a free, no-obligation rewire quote for your Cardiff property. Call 0333 323 1998 or request a quote online.
Can You Reduce the Cost?
If a full rewire is not in budget, a partial rewire may be a cost-effective alternative. We can upgrade the most critical circuits — typically the consumer unit, kitchen, and bathroom — while leaving sound wiring in other areas undisturbed. This can reduce costs by 40–60% while addressing the most urgent safety concerns.
We also offer flexible scheduling — if you have flexibility on dates, we can often fit your rewire around our existing bookings, which helps us schedule efficiently and keeps your costs down.