Commercial Electrical Inspection Cost UK: 2026 Prices Explained

Getting a quote for a commercial electrical inspection cost and having no idea whether it's fair is a common headache for business owners and property managers across London. One engineer quotes £250, another quotes £800, and both claim to be doing the same EICR on the same size unit. Without knowing what actually drives the price, you're just guessing.

This guide breaks down real 2026 figures so you can budget properly or challenge a quote that seems off. We'll cover price ranges by property size, from small retail units to multi-floor offices, plus the per-circuit rates engineers use to calculate their fees, so you understand exactly what you're paying for.

We'll also walk through the factors that push costs up or down, things like access, property age, and the number of distribution boards, and explain why the cheapest quote often isn't the best one. By the end, you'll know what a fair price looks like for your specific premises and how to compare quotes properly before signing off on any commercial electrical inspection.

Why commercial EICR costs vary so widely

Ask five electricians for a quote on the same shop unit and you'll likely get five different numbers. That's because a commercial EICR isn't priced off a flat rate. Engineers calculate their fee based on how long the inspection and testing will actually take, and that depends on the number of circuits, the type of premises, how accessible the wiring is, and how old the installation is. A single-circuit stockroom takes an hour. A 40-circuit office with three distribution boards takes most of a day.

Circuit count drives the price

Circuits are the biggest cost driver by far. Every socket, lighting circuit, and piece of fixed equipment gets tested individually, so more circuits mean more time on site. A small café with one consumer unit and 8 to 10 circuits might take two hours. A warehouse with racking lighting, three-phase machinery, and separate office circuits could easily run to 60 or more circuits and take a full day, sometimes two.

The number of circuits in a building, not its floor area, is what really sets the price of a commercial EICR.

Access and building age matter too

Buildings with suspended ceilings, raised floors, or locked plant rooms slow everything down, because the engineer has to physically get to sockets, junction boxes, and cabling to test it properly. Older properties add another layer of complexity: outdated wiring types, undocumented alterations, and consumer units that don't match any as-fitted drawings all take longer to trace and record. A 1980s office block with three decades of ad-hoc rewiring will almost always cost more to inspect than a newly fitted-out unit, even if the circuit count is similar.

Qualifications and certification affect the fee

Not every electrician charging for an EICR carries the same level of accreditation, and this shows up in the price. Engineers registered with a competent person scheme, such as those recognised by NICEIC, typically charge more than an unregistered sole trader, but you're paying for indemnity insurance, ongoing assessment, and a paper trail that insurers and enforcement bodies actually recognise. This distinction matters more for commercial premises than domestic ones, because the Regulatory Reform (Fire Safety) Order 2005 and general health and safety duties place direct responsibility on business owners to prove their installation is safe.

Location and callout logistics

Working in central London adds cost that has nothing to do with the wiring itself. Congestion charges, parking restrictions, and tighter access windows around business hours all get factored into a quote, particularly for premises that can only be inspected out of hours or at weekends to avoid disrupting trade. A unit in outer London or the South East with easy parking and flexible access will usually see a lower callout cost than an identical building squeezed into a busy West End street.

How to work out your inspection cost

Working out a fair price for your own building doesn't require an electrician's calculator, just a rough method that mirrors what engineers actually use. Most base their fee on a per-circuit rate, then add a fixed callout charge to cover travel, paperwork, and certification. Get those two numbers and you can sanity-check any quote that lands in your inbox.

Start by counting your circuits

Grab your distribution board schedule, or ask your current electrician for one, and count every circuit listed: sockets, lighting, fixed appliances, and any sub-mains feeding separate boards. If you don't have a schedule, walk the premises and count consumer units, then estimate 8 to 12 circuits per unit for a typical small commercial space. This single number matters more than square footage when pricing a commercial electrical inspection.

Apply a realistic per-circuit rate

Most London engineers charge somewhere between £8 and £15 per circuit for straightforward commercial testing, with rates climbing toward £20 or more where access is difficult or three-phase equipment is involved. Multiply your circuit count by that range to get a testing-time estimate, then add the fixed callout fee.

Estimated cost = (circuit count x per-circuit rate) + callout/certificate fee
Example: 25 circuits x £10 = £250, plus £100 callout = £350

If a quote doesn't roughly match your circuit count multiplied by a sensible per-circuit rate, ask the engineer to explain the difference before you book.

Don't forget the certificate and admin cost

A proper EICR includes a written report with observation codes, not just a verbal "it's fine". That documentation takes time to compile and typically adds £50 to £150 on top of the testing fee, depending on the number of defects recorded. Skipping this step, or accepting a one-page summary instead of a full schedule of test results, is one of the easiest ways an unqualified tradesperson undercuts a proper quote. Use these three figures together, circuit count, per-circuit rate, and certificate fee, and you'll land within a realistic range before you even pick up the phone.

Commercial EICR price examples by property size

Numbers help more than formulas when you're trying to sanity-check a quote, so here's what real jobs tend to cost across London and the South East in 2026. These figures assume a standard commercial EICR with reasonable access and no major pre-existing faults; treat them as a starting point rather than a fixed price list.

Small units and single-floor shops

A small retail unit or café with one consumer unit and 8 to 15 circuits typically costs between £150 and £280 for a full EICR, inspection plus certificate included. These jobs usually finish in an afternoon, so the price is dominated by the callout fee and admin rather than testing time. A hairdresser's or a small takeaway sits comfortably in this bracket.

Offices and mid-sized premises

A single-floor office with 20 to 35 circuits, maybe two small kitchens and a server rack, generally lands between £280 and £550. Multi-floor offices with several distribution boards push toward £600 to £900, largely because the engineer has to move between floors and reconcile separate circuit schedules for each board.

A realistic commercial EICR rarely costs less than £150, and anything charging far below that for a multi-circuit building should raise questions.

Warehouses, industrial units, and larger blocks

Warehouses and light industrial premises often carry three-phase supplies, racking lighting, and separate office areas bolted on, which is why costs vary so widely, anywhere from £500 for a modest unit to £1,200 or more where machinery and multiple boards are involved. Large multi-unit blocks or retail parks with 80-plus circuits spread across several tenancies regularly exceed £1,500, sometimes running to £2,500 when the inspection spans two visits to avoid disrupting trading hours. Whatever bracket your premises falls into, use these ranges alongside the circuit-count method from the previous section to spot a quote that's genuinely competitive rather than just cheap.

What can add extra cost on the day

Even a well-priced quote can grow once the engineer actually opens the distribution board. Most reputable firms build in some contingency, but a handful of issues turn up often enough that it's worth knowing about them before the van arrives, not after you've received an invoice with extras you weren't expecting.

Faults found during testing

Sometimes a circuit fails insulation resistance or earth loop impedance testing and the engineer needs extra time to isolate the fault, trace it back to source, and confirm it's safe to leave or needs immediate remedial work. This is the single biggest reason a commercial EICR runs over its estimated time. A building with old, undocumented wiring is far more likely to throw up faults than a recently rewired unit, which is part of why property age featured so heavily in the pricing discussion above.

A quote is an estimate of a healthy installation, not a fixed price for whatever the engineer actually finds inside your walls.

Access problems on the day

Locked plant rooms, missing keys, staff unable to move stock away from a distribution board, or equipment left running that can't be isolated all cost real time. Engineers typically charge for this in one of a few ways:

• An hourly rate for time spent waiting or working around obstructions

• A rebooking fee if the inspection can't be completed and a second visit is needed

• A surcharge for evening or weekend work if daytime access simply isn't possible

Extra circuits or boards not mentioned in the quote

Quotes are usually based on information the client provides over the phone or by email, and it's common for a distribution board in a back office or a mezzanine to get missed entirely. If the engineer arrives and finds twice the circuit count originally discussed, expect the price to rise proportionally using the same per-circuit method covered earlier. Avoiding this is straightforward: send photos of every consumer unit on site before you book, and confirm the total circuit count with the engineer rather than guessing. Getting this right upfront removes almost all of the surprises that turn a fair quote into a disputed invoice.

How to compare quotes and avoid hidden charges

Getting three quotes for a commercial electrical inspection only helps if you're comparing like for like. A price on its own tells you almost nothing until you know what's included, how it was calculated, and who's actually doing the work. Line the quotes up side by side and check the same details on each one before you make a decision on price alone.

Ask for a circuit-level breakdown

Before accepting any quote, ask the engineer how many circuits they've priced for and what their per-circuit rate is. A proper quote should let you reverse the maths using the formula from earlier in this guide. If a firm won't tell you how they arrived at the figure, or the number seems disconnected from your actual distribution boards, treat that as a warning sign rather than a bargain.

Check what's genuinely included

Hidden charges usually hide inside vague wording rather than the headline price. Before signing off, confirm these points in writing:

• Does the price include the full written EICR certificate with observation codes, or just a verbal pass/fail?

• Is remedial work for minor faults quoted separately, or bundled into a fixed retest fee?

• Does the quote cover every distribution board on site, including any in stockrooms or mezzanines?

• Is there a rebooking charge if access issues stop the job finishing in one visit?

• Does the price include VAT, or is that added afterwards?

The cheapest quote on paper often becomes the most expensive once every missing line item gets added back in.

Verify accreditation before you book

Always check that the engineer or firm holds valid membership with a recognised body such as NICEIC or a similar competent person scheme, since this affects both the quality of the inspection and whether insurers will accept the resulting certificate. Request the engineer's registration number and confirm it's current rather than taking a logo on a website at face value.

Finally, compare turnaround time alongside price. A quote that's £50 cheaper but takes three weeks to book in, when your existing certificate expires next week, isn't actually the better deal once you factor in the compliance gap it creates for your business.

Budgeting for your next inspection

A fair commercial electrical inspection cost always traces back to circuit count, access, and the qualifications behind the certificate. Once you know roughly how many circuits your premises has and apply a sensible per-circuit rate, you can spot a quote that's genuinely competitive rather than just cheap, and you'll avoid the shock of hidden extras once the engineer opens the distribution board.

Budget with a little headroom rather than the bare minimum. Set aside enough to cover a second visit if access proves tricky, and check your certificate expiry date well before it lapses, since a gap in compliance is far costlier than the inspection itself. Treat the EICR as a routine cost of running your building safely, not a one-off expense to minimise at any cost.

If you want a straightforward, circuit-based quote for your London or South East property, get a quote from our team and we'll walk you through the figures before you commit.