Prices
How much does a house rewire cost in Cardiff?
Honest numbers, what changes the price, and what a proper quote should include — so you can compare like for like.
Quick answer
A full rewire of a typical three-bedroom house generally costs somewhere around £4,500 to £8,000 including VAT. Published 2026 figures put the UK average for a 3-bed house at £6,225, and Cardiff listings range from about £4,300 to £8,500. The price for your home depends on its size, how many sockets and lights you want, whether you’re living in it, and access.
Typical rewire prices by property size
These are published UK averages for 2026, including VAT. They’re a useful starting point — not a quote.
| Property | Average full rewire (UK, 2026) |
|---|---|
| 1-bed flat | £3,900 |
| 2-bed flat | £4,800 |
| 2-bed house | £4,800 |
| 3-bed house | £6,225 |
| 4-bed house | £7,730 |
| 5-bed house | £10,000 |
Source: Checkatrade rewire cost guide (updated June 2026), which gives a typical range of £4,450–£8,000 for a 3-bed house. Cardiff range: HaMuch Cardiff listings (£4,300–£8,500, average £5,760).
What affects the price
- Size of the property — more rooms means more circuits and more cable.
- Sockets and lighting — most older homes need far more sockets than they have, and downlights or LED feature lighting take longer than standard ceiling lights.
- Whether you’re living in it — an empty or mid-renovation house is quicker than working around furniture and keeping power on each night.
- Access — floor types, solid walls, lofts and cellars all affect how cables are run.
- Extras — a new consumer unit, mains smoke and heat alarms, outdoor lighting, shower and cooker circuits, data points.
What a proper rewire quote should include
When you compare quotes, check they cover the same things. Our written quotes set out:
- A clear list of sockets, switches and lighting points, room by room
- A new consumer unit with RCBO protection
- Smoke and heat alarms, if you want them
- Full testing and an Electrical Installation Certificate
- Building Regulations sign-off for notifiable work
- Clearing up at the end of each day
- What’s not included — usually plastering and decorating, which your plasterer or builder does afterwards
A much cheaper quote often means fewer sockets, no new consumer unit, or no certificate. Always compare like for like — and check the electrician is qualified and insured.
How to keep the cost down
- Rewire before you decorate — or during a renovation, when walls and floors are already opened up.
- Rewire when the house is empty — between owners or between tenants.
- Decide socket and light positions up front — moving things later costs more. Our quote builder helps.
- Consider a partial rewire if the wiring is sound in some areas — an EICR will show you.
How long does it take?
As a rough guide, a typical three-bedroom house takes around one to two weeks. We’ll give you a realistic timescale with your quote and agree dates that work around you or your builder.
Not sure you need a rewire?
Take our free 1-minute rewire check. It’ll tell you whether your electrics sound fine, are due an inspection, or are likely to need a rewire.
Frequently asked questions
How much does it cost to rewire a 3-bed house in Cardiff?
Published 2026 guides put a typical three-bedroom house rewire at roughly £4,450 to £8,000 including VAT, with Cardiff listings ranging from about £4,300 to £8,500. The price for your home depends on its size, how many sockets and lights you want, whether you are living in it during the work, and access. We give a fixed written quote after a visit.
Why do rewire quotes vary so much?
Quotes often include different things. Check whether the price covers a new consumer unit, smoke and heat alarms, the number of sockets and lights, testing and certification, Building Regulations sign-off, and making good. A cheaper quote with fewer sockets and no certificate is not a like-for-like comparison.
Does a rewire price include plastering?
Rewiring involves chasing walls and lifting floorboards. Plastering and decorating are usually done afterwards by a plasterer or your builder. We will tell you exactly what is and is not included in your written quote.
How long does a rewire take?
As a rough guide, a typical three-bedroom house takes around one to two weeks. Empty or mid-renovation houses are quicker than occupied ones.
Is it cheaper to rewire when the house is empty?
Usually, yes. Working around furniture and keeping power on for people living in the house takes longer. If you are renovating or between tenants, that is the best time to rewire.
Can I get a price online?
Use our free rewire quote builder to choose sockets, lighting and extras room by room and send it to us. We will come back to you to arrange a visit and a fixed written price.
Request a quote
Tell us about the job and where it is, and we’ll get back to you to arrange a visit and a fixed written quote.
Planning a rewire?Use the quote builder to choose sockets and lighting room by room.