What the job involves
Fitting a home EV charger means installing a dedicated circuit from your consumer unit (fuse board) to a wall-mounted charge point, usually on the outside of the house or in a garage. It is not the same as plugging in a socket. A charger can run at high load for hours, so it needs its own correctly sized cable, its own protective devices and proper earthing arrangements.
A standard installation normally covers:
- Checking your existing electrical supply, consumer unit and earthing type
- Supplying and mounting the charge point on a wall or post
- Running a cable from the consumer unit to the charger, either surface-clipped, in conduit or buried
- Fitting any protective devices the circuit needs, which may mean a new or upgraded consumer unit
- Testing, certification and commissioning, including setting up the charger's app or smart features
- Notifying the right bodies and giving you the paperwork
Charger installation is notifiable electrical work in a home, so it falls under Part P of the Building Regulations. The work should be done by an electrician registered with a competent person scheme, or be signed off through building control. Either way, you should get an electrical certificate at the end.
What affects the price
Two installs of the same charger can cost very different amounts. These are the things that move the price most:
- Cable run length. The further the charger is from the consumer unit, the more cable, clipping or conduit and labour you need. A charger on the wall next to the fuse board is the cheapest case.
- Route and wall construction. Drilling through a single brick wall is simple. Thick stone, cavity issues, a route through finished rooms or an awkward loft or floor void all add time.
- Underground cabling. If the charger goes on a post or detached garage, trenching and armoured cable cost more. Digging through concrete, block paving or established gardens adds labour and making good.
- Consumer unit condition. If your board is old, full, or lacks modern protection, it may need replacing before a charger can go on. That is a significant extra, though sometimes unavoidable.
- Earthing arrangements. Many homes have a type of supply earthing that needs extra protection for EV charging. Some chargers have this built in. Others need a separate earth electrode, which adds cost and may need suitable ground.
- Supply capacity. A property with a limited supply, or one already heavily loaded with electric heating, cooking or a heat pump, may need load management. In rare cases it needs work by the network operator.
- Single-phase or three-phase. Most homes are single-phase. Three-phase properties can sometimes support faster charging, but the equipment and installation differ.
- The charger itself. Price varies with brand, power rating, smart features, tethered or untethered design, and build quality. A basic unit costs less than one with extra integration or a premium finish.
- Access and site conditions. Difficult access, working at height or a long way from where the electrician can park all add time.
- Location and demand. Labour rates differ across the UK, and busy periods can affect availability and pricing.
Ways to keep the cost down
- Choose the charger position carefully. The shortest sensible cable route is the biggest saving. If you can park close to the fuse board, use that side of the house.
- Get several quotes for the same specification. Describe the same charger, the same position and the same cable route to each firm so you can compare like with like.
- Do not over-specify. A very fast charger is of little use if your car cannot accept that rate or you charge overnight. Match the unit to your car and your habits.
- Check for any current grants or schemes. Support has changed over the years and often depends on your property type or tenure. Check current eligibility before you book, and ask whether the installer can claim on your behalf if it applies.
- Ask about bundling. If your consumer unit needs replacing anyway, or you are having other electrical work done, doing it in one visit can save duplicated call-out and labour time.
- Consider a tariff at the same time. It does not reduce installation cost, but a suitable overnight tariff and a smart charger can reduce running costs.
- Keep the area clear. Moving stored items or clearing the route before the electrician arrives saves time on site.
What should be included in a quote
A good quote is written, itemised and specific. Check that it covers:
- [ ] The exact charger make and model, and whether it is tethered or untethered
- [ ] The agreed charger location and a description of the cable route
- [ ] Cable type and approximate length, and whether it is surface-mounted, in conduit or buried
- [ ] Any consumer unit work, either included or clearly stated as not needed
- [ ] Earthing and protection arrangements, including any earth electrode if required
- [ ] Notification to the network operator where needed
- [ ] Testing, certification and Part P compliance or building control notification
- [ ] Making good after drilling, chasing or trenching
- [ ] VAT treatment, stated clearly
- [ ] Warranty on the workmanship and on the charger
- [ ] What happens if the survey on the day finds something unexpected, and how extra costs are agreed
- [ ] Payment terms, deposit and expected start date
Questions to ask an electrician
- Which competent person scheme are you registered with, and will I receive an electrical certificate?
- Have you visited or seen photos of my consumer unit, meter and proposed charger location?
- Is my existing supply and fuse board suitable, or do you expect extra work?
- What type of earthing do I have, and how will the charger be protected?
- Do you need to notify my network operator, and will you do that?
- Why have you recommended this charger over others?
- Is the cable route fixed in the price, and what would change it?
- Who deals with making good, and what finish should I expect?
- What guarantee do you give on your work, and how do I claim on it?
- Can I see examples of similar installations you have done?
How long it takes and what to expect
Most straightforward installs are done in a single day, often within a few hours. Longer cable runs, trenching, consumer unit replacement or earth electrode installation can stretch that, sometimes over more than one visit.
Expect the electrician to isolate the power to the house for a period, so plan around that. Drilling and cable fixing will make some noise and dust. At the end they should test the circuit, explain how to use the charger, help you connect it to your app or Wi-Fi if needed, and leave you with the certification and manuals.
A pre-install survey, either in person or from photos, helps avoid surprises. If something unexpected turns up, such as a poor earth reading or a board that cannot be added to, a sensible installer will stop, explain it and agree the next step with you before going ahead.
Signs a quote is too cheap or too expensive
Possibly too cheap:
- No survey, photos or questions about your property before quoting
- No mention of earthing, protective devices or testing
- Vague wording such as "install charger" with no model, cable length or route
- No mention of certification or Part P, or reluctance to say which scheme they belong to
- Pressure to pay a large sum upfront
- A price far below every other quote, which usually means something has been left out and will appear later as an extra
Possibly too expensive:
- A big price gap with no explanation of cable length, groundwork or consumer unit work
- Unnecessary extras, such as a new consumer unit when yours is modern and has space
- A premium charger recommended without a reason that suits your needs
- An unwillingness to itemise the quote
- Fixed pricing that ignores how simple your install is, for example a charger next to the meter
The best check is to compare the prices on this page with your quotes, and ask each installer to explain any large difference. A reputable electrician will be happy to walk you through what is included and why.