Installing a home EV charger is one of the best investments you can make as an electric vehicle owner. A dedicated wallbox charges faster than a three-pin plug, costs less per mile than public chargers, and can be fitted in as little as 2–4 hours. But the process involves more than just picking a charger off a shelf.
This guide walks you through exactly what happens during installation, what electrical work your home might need, and how to choose an OZEV-accredited installer who will get the job done right. We also cover the common problems that catch homeowners off guard and how to avoid them.
- A standard installation costs £300-£600 for labour - on top of the charger unit, bringing the total to £800-£1,500 depending on brand and complexity
- The whole process takes 2-4 hours - from mounting the wallbox to final commissioning, though consumer unit upgrades or long cable runs add time
- Your installer must be OZEV-accredited - this is mandatory for grant eligibility and ensures compliance with BS 7671 wiring regulations
- Smart chargers are now a legal requirement - since June 2022, all new home chargers must be smart-enabled under UK regulations
- PEN fault protection is essential - built into the Zappi and Andersen (saving £100-£150), but requires an external device for Ohme, Pod Point, and Tesla
What Happens During an EV Charger Installation?
A typical home EV charger installation follows four stages: survey, quote, install day, and commissioning. Most installers complete the entire process within two weeks of your initial enquiry, with the physical installation itself taking 2–4 hours.
Stage 1: Site survey. Your installer visits your property (or reviews photos remotely) to assess the distance from your consumer unit to the charger location, check your electrical supply capacity, and identify any obstacles. This determines the final quote.
Stage 2: Quote and scheduling. Based on the survey, you receive a fixed-price quote covering the charger unit, labour, cabling, and any additional electrical work. A standard installation — up to 10 metres of cable with no consumer unit upgrade — typically costs £300–£600 for labour on top of the unit price.
Stage 3: Installation day. The electrician mounts the wallbox, runs cabling from your consumer unit, installs any required protective devices (RCD, PEN fault protection), and connects everything. They will need access to your consumer unit indoors and the mounting location outdoors.
Stage 4: Commissioning and paperwork. The installer tests the charger, walks you through the app setup, and issues an electrical installation certificate. If you are claiming the OZEV grant, they handle the paperwork on your behalf.
You must have off-street parking to install a home EV charger. The unit must be mounted on your own property — you cannot install one on a public road, shared car park, or pavement without specific permission from your local authority.
Do You Need Planning Permission?
In most cases, no. EV charger installation falls under permitted development rights in England and Wales, meaning you do not need planning permission. The charger must face your property (not the highway) and comply with standard building regulations.
There are two exceptions. If your property is a listed building or sits within a conservation area, you will need to apply for planning permission before installation. Contact your local planning authority to check — approval typically takes 4–8 weeks and may restrict where the charger can be positioned.
Scotland and Northern Ireland have similar permitted development exemptions, but the specific rules differ slightly. Your OZEV-accredited installer should confirm whether permission is required as part of the site survey.
Electrical Requirements for EV Charger Installation
Three electrical factors determine whether your installation is straightforward or requires extra work: your consumer unit capacity, PEN fault protection, and the cable run distance. Each one can add cost and time to the job.
| Requirement | What It Means | Extra Cost |
|---|---|---|
| Consumer unit upgrade | No spare way available for the EV circuit | £150–£300 |
| PEN fault protection | Earth fault device required by BS 7671 | £0–£150 (depends on charger) |
| Extended cable run | Charger more than 10m from consumer unit | £5–£10 per extra metre |
| Three-phase supply | Needed for 22kW charging (rare in UK homes) | £1,000–£3,000 via DNO |
Consumer unit. Your EV charger needs its own dedicated circuit with an RCD (residual current device). If your consumer unit has no spare way, the electrician will need to upgrade or extend it — adding £150–£300 to the bill. Older fuse boards without RCD protection will almost certainly need replacing.
PEN fault protection. Under BS 7671 (IET Wiring Regulations), all EV charger installations require protection against PEN (Protective Earth and Neutral) faults. Some chargers have this built in — the Myenergi Zappi and the Andersen A3 both include integrated PEN fault detection, saving you £100–£150 on an external device. Chargers from Ohme, Pod Point, and Tesla require a separate PEN fault relay to be installed.
If your installer does not mention PEN fault protection during the survey, ask about it directly. It is a legal requirement under BS 7671 and Building Regulations Part P. Any installer who skips this step is cutting corners.
Cable run distance. Standard installation quotes typically cover up to 10 metres of cable from the consumer unit to the charger location. If your driveway or garage is further away, expect to pay £5–£10 for each additional metre. A 20-metre run could add £50–£100 to the total.
How Long Does EV Charger Installation Take?
A standard EV charger installation takes 2–4 hours from start to finish. This covers mounting the unit, running the cable, connecting to the consumer unit, testing, and commissioning. You will need to be home during the installation.
Several factors can extend the timeline. A consumer unit upgrade adds 1–2 hours. Long cable runs through walls or underground conduit take longer to route. If the installer needs to fit an external PEN fault protection device, add 30–45 minutes.
The end-to-end process from enquiry to a working charger typically takes 1–2 weeks. The site survey and scheduling account for most of that time — the physical installation itself is usually done in a single visit.
How to Choose an EV Charger Installer
The single most important criterion is OZEV accreditation. Only installers approved under the Office for Zero Emission Vehicles scheme can process grant applications, and accreditation confirms they meet the required competency standards for EV charger installation.
Beyond accreditation, ask these questions before committing to a quote:
| Question to Ask | Why It Matters |
|---|---|
| Are you OZEV-accredited? | Required for grant eligibility and regulatory compliance |
| Does the quote include PEN fault protection? | Legal requirement — some installers exclude it to lower the headline price |
| What is included in the standard installation? | Clarifies cable length, mounting, and testing expectations |
| Do you handle the OZEV grant paperwork? | Good installers process this on your behalf at no extra charge |
| What warranty do you offer on the installation? | Separate from the charger warranty — look for at least 12 months |
| Will you issue an electrical installation certificate? | Legal requirement under Part P — proves the work was done safely |
Get at least three quotes before choosing an installer. Prices vary significantly — we have seen £200+ differences for identical installations. The cheapest quote is not always the best if it excludes PEN fault protection or uses a shorter cable run allowance.
What Can Go Wrong? Common Installation Issues
Most EV charger installations go smoothly, but a handful of issues catch homeowners off guard. Knowing about them in advance helps you budget accurately and ask the right questions during the survey stage.
Surprise consumer unit costs. If your fuse board is old or has no spare ways, the installer may need to upgrade it on the day. This adds £150–£300 and extends the installation by 1–2 hours. A good installer will flag this during the survey, not on install day.
Wi-Fi connectivity problems. Smart chargers need a stable Wi-Fi signal at the mounting location. Garages and driveways are often Wi-Fi dead spots. Test your signal strength before the installer arrives and consider a Wi-Fi extender if needed — without connectivity, you lose smart scheduling and off-peak tariff benefits.
Ground conditions for cable routing. If the cable needs to run underground (from the house to a detached garage, for example), rocky or concrete ground can make trenching expensive. Ask whether the quote covers trenching or if it is an additional charge.
Incorrect charger for your supply. A 22kW charger on a single-phase supply will only deliver 7.4kW — you are paying for capacity you cannot use. Most UK homes have single-phase electricity, so a 7.4kW charger is the right choice for the vast majority of installations.
Never use an unaccredited electrician to save money. An installation that does not comply with BS 7671 and Part P voids your charger warranty, disqualifies you from the OZEV grant, and could create a genuine safety hazard. The £100–£200 you might save is not worth the risk.
Next Steps
If you are ready to move forward, start by choosing the right charger for your home. Our best home EV chargers guide compares the top five UK models on price, features, and smart capabilities. Once you have picked a charger, use our installation cost breakdown to estimate your total spend, and check whether you qualify for the OZEV grant (up to £350 off for renters and flat owners).
