The money you save on a cheap sparky can cost you more at Building Control

The call I get most often on this one comes too late to be cheap. The kitchen's in, the tiling's done, the client's ready to move on... and then the buyer's solicitor, or the landlord, or the homeowner's own paperwork asks for the electrical certificate. The builder rings round, finds the sparky who did the wiring, and either can't get hold of him or gets told there isn't a certificate coming. Now I'm standing in a finished kitchen working out how to sign off work I didn't do, and the "cheap" electrics have turned into the most expensive line on the job.

If you hire electricians as part of what you build (kitchens, bathrooms, extensions, conversions) this is worth two minutes of your time, because it's a trap that's entirely avoidable at the quoting stage and a nightmare to unpick at the end.

The bit the cheapest quote quietly leaves out

Some electrical work in a home is notifiable... meaning Building Control has to know about it. A new circuit, a new consumer unit, and work in what the regs call a special location (the zones around a bath or shower, for instance): that's the sort of thing that legally needs signing off, not just doing.

There are two ways that sign-off can happen:

• The electrician is on a Competent Person Scheme (NAPIT, NICEIC and a few others). If so, they can self-certify their own notifiable work and notify Building Control for you... it's part of the job, it's built into what they do, and you get your certificate without thinking about it.

• The electrician isn't on a scheme. Then they can't self-certify, and the notifiable work has to be told to your local authority Building Control separately... which means a Building Control application, a fee, and an inspector's visit before it can be signed off.

That second route is the one nobody prices in. The cheaper quote is often cheaper precisely because that electrician isn't carrying the cost of scheme membership... and that cost doesn't vanish, it just moves onto you at the back end.

The maths, done honestly

Say the non-scheme electrician comes in a few hundred pounds under the registered one. Feels like a saving. But route their notifiable work through Building Control yourself and you're looking at a separate fee (it varies by council, and you should confirm the figure with your local authority, but it's commonly a few hundred pounds) plus the wait for an inspector, plus the risk that if it's not done at all the work can't be signed off and sits on the property as a problem for the next sale.

Add the fee to the delay to the aggravation, and the "cheaper" electrician frequently ends up costing more than the registered one would have... you've just paid it in a worse way, later, when you'd rather be finished.

And it's worth knowing the paperwork isn't only a nicety. Notifiable work that should have been signed off and wasn't is technically a breach of the Building Regulations, and since the law was tightened in 2022 that's an offence that can carry an unlimited fine. In practice the thing that actually bites a builder is simpler than a court case... it's a sale that won't complete until the electrics are put right on paper.

Where it really bites

I see this most on the margin-tight refurb jobs... the Maidenhead and Twyford renovation boom, second-hand houses being done up quickly to sell or let, where the electrical line got shaved to make the numbers work. It's a false economy on a job like that more than anywhere, because the whole point is a clean handover with the paperwork in order, and a missing electrical certificate is exactly the thing that stalls a completion.

There's also the stuff behind the certificate. An electrician who isn't on a scheme may also be one who isn't testing to standard, isn't using calibrated instruments, and isn't fully across current regs... the certificate is a proxy for all of that. When it's missing, it's rarely only the paperwork that's missing.

The clean way to do it

None of this is complicated to avoid. When you're taking electrical quotes for a build, ask one question up front: "are you on a Competent Person Scheme, and will you self-certify and provide the certificate?" A registered electrician will answer yes without blinking, and the whole Building Control problem disappears... I handle the notification, you get the certificate, the job hands over clean. I explain more about who carries the sign-off on a build in my post on who's responsible for signing off the electrics.

Building something and want the electrics to hand over clean?

I'm a NAPIT-registered electrician based in Slough, covering Maidenhead, Windsor, Bracknell and across the Thames Valley, and I self-certify my notifiable work... so on your job the certificate is part of the deal, not a chase at the end. Whether it's a one-off kitchen or a run of refurbs, get in touch for a free, no-obligation quote and I'll price it properly, including the paperwork. If you've already got an orphaned job that needs signing off, my inspection and testing service is where to start, and you can see how I work with builders on my full rewires page.