Commercial EICR Cost Per Circuit: 2026 Pricing Guide
If you're responsible for a commercial property, you've probably been quoted a price for an EICR and wondered how it was calculated. The short answer: most electricians and testing companies price based on the number of circuits in your distribution board(s). Understanding the commercial EICR cost per circuit helps you estimate your total spend before you even pick up the phone.
At Electrical Testing London, we carry out commercial EICRs across London, Greater London, and the South East every week. We see the pricing questions constantly, and the confusion that comes with them. A small retail unit with 12 circuits is a very different job from a multi-floor office block with 150+. The price should reflect that, and knowing the per-circuit rate means you can hold any quote up to scrutiny.
This guide breaks down what you should expect to pay per circuit in 2026, what drives costs up or down, and how to make sure you're comparing quotes on a level playing field.
Why per-circuit pricing matters for commercial EICRs
A flat fee for a commercial EICR sounds straightforward until you realise the number attached to it could be way off for your premises. Per-circuit pricing aligns what you pay with the actual scope of work involved. An electrician testing 20 circuits is doing a fundamentally different job from one testing 200 circuits, and a pricing model that ignores that difference isn't serving you fairly.
How flat-rate quotes can mislead you
Some companies advertise a single price for a "commercial EICR" without specifying what's included. That headline figure often assumes a small premises with a limited circuit count. Once an engineer arrives and counts your actual circuits, the price adjusts upward. You end up spending more time renegotiating than you would have if you'd simply asked for a per-circuit breakdown from the start. Understanding the commercial EICR cost per circuit gives you a reliable unit of measurement to compare competing quotes on equal terms.
Always ask any company for their per-circuit rate and minimum charge before agreeing to a quote.
When you know the per-circuit rate, you can do basic maths before the engineer even visits. If a company charges a set figure per circuit and you have an approximate circuit count, you can sanity-check their final quote against that figure. Hidden mark-ups and surprise add-ons become much harder to slip past you.
Why circuit count varies so much between commercial premises
A small office unit might run a single consumer unit with 12 to 20 circuits covering lighting, power sockets, and heating. A mid-size restaurant, by contrast, could have separate distribution boards for kitchen equipment, front-of-house power, refrigeration, and extract ventilation, pushing the total circuit count past 60 or 80. A large warehouse, retail unit, or multi-tenanted office block could reach the hundreds of circuits. The point is that "commercial" covers an enormous range, and per-circuit pricing accounts for that range in a way a flat fee simply cannot.
Regulatory requirements reinforce why this matters. The IET Wiring Regulations (BS 7671) set out the inspection and testing standards that every circuit must be assessed against. Because each circuit requires its own individual inspection, continuity tests, insulation resistance tests, and polarity checks, the labour time scales directly with how many circuits your property has. More circuits means more hours on site, and the per-circuit rate reflects that honest relationship between scope and cost.
What the per-circuit model means for your budget
Per-circuit pricing gives you predictability and control. Once you have a rough count of your circuits and a confirmed rate from a contractor, you can build an accurate estimate into your compliance budget well before any work begins. You're not relying on a vague ballpark that doubles once someone actually walks your premises.
Per-circuit pricing also helps you spot outliers. If most companies quote around a consistent per-circuit figure and one comes in far lower, that's a prompt to ask exactly what they're inspecting and testing. Cutting corners on individual circuit assessments is precisely where compliance failures occur, and a suspiciously low rate sometimes signals a quicker, less thorough inspection rather than a genuine saving.
What counts as a circuit in a commercial EICR
Before you can estimate your commercial EICR cost per circuit, you need to know what an engineer actually counts as a circuit. A circuit is a single electrical path that runs from a protective device, such as a breaker or fuse, in a distribution board out to one or more end points, then returns via the neutral conductor. Every one of those circuits needs to be individually inspected and tested, which is why the count drives the price.
Final circuits vs distribution circuits
Final circuits are the ones that supply equipment or outlets directly, covering lighting, socket outlets, cooker connections, air conditioning units, and similar end loads. These make up the majority of what gets tested in a standard commercial EICR. Distribution circuits, sometimes called sub-main circuits, carry power from the main incoming supply to a secondary distribution board elsewhere in the building. Both types are included in the inspection and both count toward your total.
If your premises has more than one distribution board, every board contributes its own circuit count to the total, which is one of the most common reasons a quote comes in higher than expected.
What gets counted and what doesn't
Most engineers count each protective device in each distribution board as one circuit. A 20-way board that is fully loaded gives you 20 circuits from that board alone. Spare ways with no protective device installed are typically not counted because there is no wiring to test. Dedicated circuits for fixed equipment such as server rooms, fire alarm panels, or lift supplies each count individually, regardless of how simple or short the run is.
Spare capacity on a board is worth noting separately. If you plan to expand your electrical installation soon, an engineer may flag those spare ways in the EICR documentation, but they will not affect your circuit-based pricing. What matters for cost is the number of live, installed circuits across all your boards, which is exactly what a qualified engineer will establish during their initial survey of your premises.
2026 per-circuit rates and minimum charges
Knowing the going rate for a commercial EICR cost per circuit puts you in a much stronger position when reviewing quotes. In 2026, London-based contractors typically charge between £3 and £7 per circuit for a standard commercial EICR, though the figure you receive will depend on several factors covered below.
Standard per-circuit rate ranges
Most commercial EICRs in London fall within a per-circuit band of £3 to £6, with specialist or high-complexity installations pushing rates toward £7 or beyond. The table below gives you a practical reference point for different property types.
| Property type | Typical per-circuit rate |
|---|---|
| Small office or retail unit | £3 to £4 |
| Mid-size commercial premises | £4 to £6 |
| Industrial or high-complexity site | £5 to £7+ |
Simpler premises with clearly labelled boards and accessible wiring tend to sit at the lower end of each band. Harder-to-access circuits or older installations require more time per assessment and push the rate up accordingly.
Minimum charges and why they exist
Almost every contractor applies a minimum job charge, regardless of how few circuits your premises has. In London, that minimum typically sits between £150 and £250 for a commercial EICR. This reflects the baseline cost of sending a qualified engineer to your site: travel time, testing equipment, liability cover, and the work involved in producing the final EICR documentation. If your circuit count is low enough that the per-circuit calculation falls below the minimum, you pay the minimum figure rather than the calculated total.
Always confirm the minimum charge before agreeing to any quote, because on smaller premises it often becomes the actual price you pay rather than the per-circuit rate multiplied out.
Volume adjustments on larger jobs
Properties with significantly higher circuit counts often attract a reduced per-circuit rate. Testing 120 circuits in a single visit is more efficient for an engineer than multiple smaller jobs, and reputable contractors reflect that efficiency in their pricing. Confirm directly with your contractor whether any volume reduction applies once they have your approximate circuit count, as some companies only apply the discount automatically above a certain threshold.
How to calculate your EICR cost per circuit
Calculating your commercial EICR cost per circuit is straightforward once you have two numbers: your circuit count and the per-circuit rate your contractor charges. You can work through this in three clear steps before requesting a formal quote, which means you can budget accurately and quickly spot any figure that doesn't add up.
Step 1: Count your circuits
Walk your premises and locate every distribution board, consumer unit, or sub-panel on site. Count each protective device that has wiring connected to it, noting each board's total separately. Add those figures together to reach your overall circuit count. Spare, unoccupied breaker slots don't factor in because there is no installed wiring to inspect or test.
If your premises has multiple floors, outbuildings, or plant rooms, check every board in every location before finalising your count, as missing even one distribution board can significantly underestimate the job scope and your budget.
Step 2: Apply the per-circuit rate
Multiply your total circuit count by the per-circuit rate your contractor has confirmed in writing. A premises with 45 circuits at £4.50 per circuit gives you a calculated total of £202.50. Run this calculation yourself before accepting any quote so you can verify the contractor's figure against your own arithmetic and identify any unexplained discrepancy.
The table below shows how costs scale at different rates across common circuit counts:
| Circuit count | £3.50/circuit | £4.50/circuit | £6.00/circuit |
|---|---|---|---|
| 20 | £70 | £90 | £120 |
| 50 | £175 | £225 | £300 |
| 100 | £350 | £450 | £600 |
Step 3: Check against the minimum charge
Your calculated total only applies if it exceeds the contractor's minimum charge. If your circuit count is low enough that the per-circuit calculation falls below the minimum, you pay the minimum figure instead. Confirm the minimum charge figure before you agree to anything, then compare it against your calculation to know which number actually determines your final price.
On larger jobs, it's also worth asking your contractor whether a volume discount applies once you pass a certain circuit threshold. Properties with 80 circuits or more frequently attract a reduced per-circuit rate, which can bring your overall total down from the standard calculation by a meaningful amount.
How to compare quotes and avoid surprise extras
Getting multiple quotes for a commercial EICR is good practice, but comparing them accurately requires more than looking at the bottom line. Quotes that appear similar in total can include very different scopes, which means the cheaper figure sometimes covers less work and leaves you exposed to additional charges once testing is underway.
What to check in every quote
Before accepting any figure, confirm that the quote states a per-circuit rate, a minimum charge, and the assumed circuit count it's based on. If the quote uses a flat fee with no circuit breakdown, ask the contractor to reissue it with that detail included. A reputable company has no reason to refuse. When you have the per-circuit rate in writing, you can cross-check it against your own calculation and verify that the total adds up correctly.
Also check whether the quote includes report production and certificate issue in the price. Some contractors charge separately for generating the EICR documentation, which can add £50 to £100 to a job that looked competitive at first glance.
Ask every contractor to confirm in writing whether the quoted price covers the full EICR report and certification, or whether those are billed separately.
Common extras that inflate the final bill
Several additional items regularly appear on commercial EICR invoices that were not visible in the original quote. Remedial work is the most significant: if the inspection identifies faults, fixing them is a separate cost from the EICR itself, which is standard practice across the industry. What is less acceptable is being charged extra for items that should form part of the standard inspection, such as additional travel time beyond a reasonable distance, or a surcharge for a second engineer that was not mentioned upfront.
Watch for charges related to access arrangements too. If your circuits require isolating equipment during testing, some contractors bill separately for the time spent coordinating shutdowns with your staff. Clarifying this before booking ensures your total commercial EICR cost per circuit stays at what you agreed, rather than what gets added to the invoice afterward.
What to do next
You now have everything you need to estimate your commercial EICR cost per circuit, scrutinise any quote you receive, and budget for your inspection accurately. The key figures to pin down before you book are your total circuit count, the per-circuit rate your contractor confirms in writing, and their minimum charge. Run the calculation yourself, verify it against the quote, and ask about any extras before agreeing to anything.
Comparing contractors becomes straightforward once you apply the framework in this guide. You know what questions to ask, what extras to watch for, and what a reasonable per-circuit rate looks like in 2026 for London commercial premises. Getting the right information upfront protects you from inflated invoices and ensures the EICR you receive reflects a thorough, compliant inspection. If you're ready to get a figure for your property, request a commercial EICR quote from Electrical Testing London today.
