You're probably here because an electrician has mentioned Part P, and it sounds like another bit of building jargon you're expected to understand before anyone can change a fuseboard, add a shower circuit, or sign off work in your flat.

In practice, it matters most when you live in the kind of London property where electrical history is messy. A Victorian terrace with years of piecemeal alterations. An ex-local-authority flat with old wiring and newer kitchen upgrades. A period conversion where nobody is quite sure what was added, when, or by whom. In those homes, the difference between “someone can wire it” and “someone can do it legally and certify it properly” is a serious one.

Table of Contents

• What a Part P Electrician Means for Your London Home
• Understanding Part P Building Regulations
  • Why this matters in real life
  • What Part P does and does not mean
  • The practical takeaway
• Which Electrical Work Must Be Part P Compliant
  • What usually falls into the notifiable category
  • What is usually minor work
• How to Verify an Electrician Is Part P Qualified
  • What to ask before you book
  • What proper verification looks like
• Our Commitment to Part P Standards and Transparent Pricing
  • What you can expect on a booked job
  • Where pricing is usually clear from the start
• Your Part P Questions Answered
  • Do I get a certificate after the work
  • What if old work in the property was never certified
  • How much does it cost to get an electrician out
  • Why is there a deposit
  • Who actually carries out the work

What a Part P Electrician Means for Your London Home

A Part P qualified electrician is not just someone with a badge on a van. In a London home, it means the person doing the work understands that domestic electrical jobs must be carried out in a way that protects you from fire and electric shock, and that the work has to stand up legally as well as technically.

That matters because household electrical risks are not theoretical. UK electrical safety guidance consistently points to non-fatal shocks, burns, and domestic electrical faults as major household risks, and Part P exists to reduce those risks rather than act as a paperwork exercise, as explained by Electrical Safety First's fire safety guidance.

In a straightforward new-build flat, compliance can be easier to track because the installation is newer and documentation is often better. In older homes, it's different. A fuseboard replacement in Balham, a kitchen alteration in Clapham, or a new circuit for an electric shower in a converted terrace can uncover older faults, borrowed neutrals, undersized cabling, or DIY additions hidden under floorboards.

Practical rule: If the job changes the fixed wiring in your home in any meaningful way, you should assume compliance and certification matter until an electrician tells you otherwise.

A lot of homeowners only hear “Part P” when they're comparing quotes. That's too late. You want to understand it before anyone starts work, because once walls are chased and circuits are altered, fixing non-compliant work is always more stressful than doing it properly first time.

If you're planning work in your house or flat, it helps to start with a home electrician service for domestic electrical work rather than treating compliance as an afterthought.

Understanding Part P Building Regulations

Part P is the part of the Building Regulations that covers electrical safety in homes in England and Wales. It was introduced in 2005, and it requires notifiable electrical work in homes to be either self-certified by an electrician registered with a competent person scheme or approved by local Building Control, according to the UK government guidance on competent person schemes.

Why this matters in real life

For a homeowner, the practical issue isn't memorising regulations. It's knowing who is responsible for making sure the work is legal.

If you use the right electrician for notifiable domestic work, they can usually deal with the compliance side as part of the job. If you don't, you may end up dealing with the council route, extra inspections, delays, and the possibility that work has to be corrected before it's accepted.

Non-compliance with Part P is treated as a criminal offense. That's why this isn't something sensible electricians shrug off.

This is one reason so many domestic electricians stay registered through a competent person scheme. It allows compliant work to be self-certified without pushing the homeowner into a separate Building Control process.

What Part P does and does not mean

Part P is about domestic electrical safety under Building Regulations. It does not mean every electrical problem in a property is automatically solved just because a contractor says they are Part P qualified.

For example, in an older ex-council flat, a new kitchen circuit may be compliant and correctly notified, but the rest of the installation could still need inspection or remedial work if there are faults elsewhere. The same applies in a Victorian house where a recent extension is documented but the original upstairs circuits are tired and tripping.

That's why good electricians separate three things clearly:

• Compliance with Building Regulations for the work being done
• Testing and certification for the actual installation
• Condition of the wider electrical system in the property

When those get blurred together, homeowners assume more has been covered than is.

The practical takeaway

If the work is notifiable, somebody must handle the legal side correctly. The cleanest route is usually to hire an electrician who can carry out the work and certify it through the proper channel, instead of leaving you to sort compliance afterwards.

Which Electrical Work Must Be Part P Compliant

The simple answer is this. Major changes to your home's fixed wiring usually need Part P compliance. Minor like-for-like jobs usually don't.

That distinction catches people out all the time. A homeowner may think, “It's only one extra supply for the garden room,” or “It's only a new shower.” But if that job involves a new circuit or substantial alteration to fixed wiring, it moves into a different category.

What usually falls into the notifiable category

In London homes, these are the sorts of jobs that should set your alarm bells ringing if someone proposes doing them casually:

• New circuits: adding a fresh supply for an electric shower, cooker, EV charger, garden office, or outbuilding.
• Consumer unit changes: replacing an old fuseboard with a modern consumer unit.
• Rewiring work: full rewires and partial rewires where fixed wiring is being significantly altered.
• Larger upgrade works: substantial electrical changes during a kitchen refit, extension, or major renovation.

A few common examples:

In practice, this comes up a lot in older South West London stock. A Victorian terrace in Tooting might need a new circuit for an electric shower because the existing wiring was never designed for that load. A flat in SW19 might need a proper supply run for a garden room or home office rather than an improvised spur arrangement.

If you already know your property needs extensive wiring changes, a house rewiring service for major domestic works is the right starting point.

What is usually minor work

Minor jobs are usually like-for-like tasks on an existing circuit where the underlying wiring design is not being substantially changed.

That can include:

• Changing fittings: replacing a pendant light with another light fitting
• Replacing accessories: swapping a cracked socket or broken switch
• Small repairs: fixing a fault at an existing connection point where no major alteration is made

That said, the label “minor” doesn't make a job safe for guesswork. I've seen simple-looking socket replacements in period conversions uncover scorched terminals, no earth continuity, or mixed old and new cable colours that tell you the history of the circuit is far from simple.

If a job starts as “just swap this fitting” but exposes damaged or unsuitable fixed wiring, the real job is no longer minor.

One more point homeowners often miss. Work can be legal on paper but still poorly thought through in practice. Adding a new circuit correctly is one thing. Making sure the rest of the installation is in good enough condition to support it is another. That's why decent electricians test, inspect, and explain rather than just rushing to connect the new bit and leave.

How to Verify an Electrician Is Part P Qualified

Don't take “Part P qualified” at face value. Check it properly before work starts. That's the safest route, and it's usually where you can tell whether you're dealing with a serious tradesperson or someone hoping you won't ask follow-up questions.

What to ask before you book

Start with a short, direct checklist.

• Ask which scheme they use: For domestic notifiable work in England and Wales, electricians normally need to be registered with a government-approved competent person scheme if they are self-certifying work.
• Ask about their domestic qualifications: For domestic installers, scheme membership typically requires knowledge of BS 7671, a Level 3 inspection and testing qualification, and at least 2 years' experience, as set out by Electrical Safety First's guide to Part P.
• Ask about insurance: A practical benchmark used by scheme providers is at least £2 million public liability insurance, together with current technical documents and calibrated test equipment records, according to this Part P checklist used in trade training.

Those questions aren't awkward. They're normal.

What proper verification looks like

A genuine check is more than reading a logo on a website.

Use this approach:

1. Get the registration details. Ask for the electrician's scheme registration information.
2. Check the public register. Verify that registration yourself on the relevant scheme's search tool.
3. Match the person to the job. Make sure the person attending is connected to the business and the registration you were given.
4. Ask what certificate you'll receive. A competent electrician should be able to explain that clearly before starting.

A helpful background read if you want to understand the training route into the trade is this expert guide from Growth 4 Trades. It gives useful context on what proper electrical training and progression look like, which helps when you're comparing one contractor with another.

A vague answer is usually your warning sign. Competent electricians don't get defensive when you ask how compliance will be handled.

If you want a second opinion before booking, it's sensible to start with a local electrician search for London domestic jobs and compare how each contractor explains qualifications, certification, and process.

Our Commitment to Part P Standards and Transparent Pricing

For notifiable domestic work, homeowners need two things from a contractor. Compliance handled properly and costs explained plainly.

Electricians London 247 works as Part P certified contractors and City & Guilds qualified electricians. We're also fully insured with £5 million public liability plus professional indemnity, which goes beyond the practical benchmark many scheme providers expect for applicants. For homeowners, that matters when work affects the fixed installation in an occupied property.

What you can expect on a booked job

In real terms, that means when we carry out notifiable domestic work, the compliance side is treated as part of the job rather than left hanging in the background.

Typical examples include:

• Consumer unit replacement: from £650 for up to 10 circuits
• EV charger installation: typically £800 to £1,500 for a standard 7kW domestic charger
• Fault finding and upgrade work: charged with a minimum 1 hour, then 20-minute increments
• Standard day rate: £350 Monday to Saturday
• PAT testing: from £99 for the first 20 items

Those figures help you sort serious quotes from woolly ones. If somebody won't explain how they charge, you can expect the rest of the process to be equally unclear.

This is also where landlords and owners of older flats need to keep their head. Part P compliance for new work is one part of the picture. The wider condition of the installation may still need checking, especially in rental property, older conversions, or homes with a history of ad hoc alterations. In those cases, it often makes sense to pair the job with an EICR or landlord electrical certificate service.

Where pricing is usually clear from the start

There's no benefit in pretending every job can be priced perfectly from one photo. It can't. Not in London homes where access, old wiring, previous workmanship, and hidden defects all affect the job.

What does work well is a clear process:

• Paid diagnostic visit: no “free visit” language dressed up as certainty
• Photo or video review before attendance: useful for narrowing likely scope
• Itemised quote where possible: especially for upgrades and installation work
• Deposit before the job: 30% via payment link to secure the booking

Here's a short explainer before booking:

That approach is usually the most honest one. It gives you a realistic starting price, a proper attendance slot, and a better chance of getting the right materials and testing time allowed for the first visit.

Your Part P Questions Answered

Do I get a certificate after the work

If the job is notifiable domestic work, you should expect the compliance and certification side to be dealt with properly. Don't just accept “it's all fine” as an answer.

Ask before work starts:

• What certificate will I receive
• Who handles notification if the job is notifiable
• When will the paperwork be issued

If the electrician hesitates, that's a problem.

What if old work in the property was never certified

This comes up constantly in London sales, refurbishments, and landlord handovers. Usually, the issue appears when someone opens a cupboard, removes an old accessory, or looks at the fuseboard and realises previous alterations were done with no clear paperwork.

At that point, the right move is not to panic and not to cover it up. Get the installation inspected, identify what's there, and work out whether parts need testing, remedial work, or replacement. In a Victorian terrace or ex-council flat, hidden non-compliant work often matters more than the visible fitting you were planning to change.

The expensive mistake is carrying on with more new work before anyone has established whether the old work underneath is safe.

How much does it cost to get an electrician out

For planned work, the standard rate is £75 per hour Monday to Saturday, 8:00 to 17:00, with no callout fee in that window. Jobs are charged with a minimum 1 hour, then 20-minute increments.

Out-of-hours attendance costs more, and evening, Sunday, and night work carry higher rates and callout fees. If the job needs diagnosing rather than quoting from sight, treat that visit as a paid technical appointment, because that's what it is.

Why is there a deposit

A 30% deposit secures the booking slot and allows materials, scheduling, and job preparation to be lined up properly. For larger jobs, especially consumer unit changes, rewires, or EV charger installs, that's standard practical housekeeping.

It also protects you from the opposite problem. Last-minute reshuffles and vague bookings often lead to rushed work, missing materials, or contractors trying to squeeze your job between others.

Who actually carries out the work

Ask this directly. On domestic electrical work, you want to know whether the person attending is the person responsible for the installation, testing, and certification process.

That's particularly important on jobs in occupied homes where the installation condition may change once work starts. A competent person on site should be able to explain what they've found, what needs to happen next, and whether the original scope still makes sense.

Book a paid callout with a Part P certified electrician through Electricians London 247. Secure your slot with a 30% deposit. Send a photo or short video first and we'll prepare a tighter quote before we arrive.