Fixed Wire Testing Cost: UK Prices, Per-Circuit & Factors

Fixed wire testing cost is one of the first things landlords, business owners, and homeowners ask about before booking an Electrical Installation Condition Report (EICR). That's fair enough, you need to budget for it, and pricing can vary significantly depending on the size of the property, the number of circuits, and whether it's a domestic or commercial job. The problem is that quotes across the industry aren't always transparent, which makes it harder to know if you're paying a reasonable price.

At Electrical Testing London, we carry out EICRs across London, Greater London, and the South East for residential and commercial clients every week. We know what fair pricing looks like because we set it daily, and we've seen what others charge too. This article breaks down current UK prices for fixed wire testing, explains how per-circuit pricing works, covers the factors that push costs up or down, and clarifies the legal requirements that might mean you can't afford to skip it.

Why fixed wire testing matters

Fixed wire testing isn't optional for most property types in the UK, and understanding why it exists helps you appreciate what you're actually paying for when you look at fixed wire testing cost. Your electrical installation, meaning every cable, socket, switch, and consumer unit fixed into the fabric of the building, degrades over time. Insulation breaks down, connections loosen, and faults develop that you cannot see without proper testing. An EICR identifies those faults before they cause a fire, an electrocution, or a costly insurance dispute.

The legal requirement for landlords and businesses

Private landlords in England are legally required to carry out an EICR at least every five years under the Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020. A copy of the report must be provided to tenants within 28 days of the inspection. If the report identifies Code C1 or C2 faults, remedial work must be completed and evidence provided to the tenant within 28 days of receiving the report, or sooner if the inspector specifies.

Failing to comply with the Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020 can result in a local authority imposing a financial penalty of up to £30,000.

For commercial properties, the legal framework sits under the Health and Safety at Work Act 1974 and the Electricity at Work Regulations 1989. These regulations place a duty on employers and building owners to maintain electrical systems in a safe condition. While neither piece of legislation specifies a fixed testing interval, the IET Wiring Regulations (BS 7671) recommend maximum intervals based on premises type, ranging from one year for high-risk environments to five years for standard commercial buildings.

What deterioration actually looks like

Most electrical faults don't announce themselves. Worn cable insulation can sit behind a wall for years, technically functioning but creating a risk that only becomes visible when it causes a fault. Rodent damage, heat exposure, water ingress, and overloaded circuits all contribute to gradual deterioration that builds up silently between inspections.

In older properties, the risks compound further. Installations wired before modern standards were adopted may lack residual current device (RCD) protection, may include outdated consumer units, or may have been extended informally over decades without proper certification. An EICR surfaces all of this, giving you a clear picture of what the installation actually looks like today, not what it looked like when it was last signed off.

What happens when you skip testing

Skipping fixed wire testing creates a cascading risk that goes beyond the electrical system itself. Insurance policies can become void if a fire or fault occurs and you cannot demonstrate that the installation was maintained to a reasonable standard. Your personal liability as a landlord or business owner increases significantly if someone is harmed and you have no recent EICR in place.

Tenants and buyers are increasingly aware of what an EICR represents. An up-to-date satisfactory report demonstrates that the property has been properly maintained, which protects your investment and your reputation, whether you manage a single flat or a portfolio of commercial premises.

How fixed wire testing costs are priced

Most electrical contractors price fixed wire testing using one of two methods: per-circuit pricing or a flat-rate fee. Understanding the difference matters because it directly affects how comparable quotes actually are. A flat-rate quote might look attractive until you realise it covers far fewer circuits than a competitor's itemised one, which means you are not comparing like for like.

Per-circuit pricing explained

Per-circuit pricing is the most transparent model for calculating fixed wire testing cost. Each circuit in your consumer unit represents a separate wiring run, whether that is a ring main, a lighting circuit, or a dedicated circuit for a cooker or shower. The engineer tests each one individually and charges a set rate per circuit on top of any fixed call-out or administration fee.

For domestic properties, the number of circuits in a standard consumer unit typically ranges from 8 to 16. Commercial properties can run into the dozens, which is why per-circuit pricing makes more sense for larger installations where a flat rate would either penalise the client or undercut the contractor.

The number of circuits in your property is the single most reliable indicator of how long an EICR will take and, consequently, what it will cost.

Flat-rate pricing explained

Some contractors offer flat-rate pricing based on property type or size, for example a set fee for a one-bedroom flat or a standard two-storey commercial unit. This approach is simple to understand, but it works best when the property fits a predictable profile. If your property has an unusually high circuit count, a flat rate may not reflect the actual work involved, and some contractors will revise their quote once they assess the installation on site.

What pushes the price up or down

Several factors shift the final figure beyond the basic circuit count. Access difficulty is a common one: consumer units in awkward locations, multi-storey buildings without lifts, or installations spread across several distribution boards all add time to the job. The age of the installation also matters because older wiring requires more careful testing and is more likely to generate observations that extend the inspection. Regional labour rates, travel distance, and whether you need the report on short notice can each add to the total as well.

Typical UK prices and per-circuit rates

Fixed wire testing cost varies across the UK, but there are clear industry benchmarks you can use when assessing quotes. Most contractors charge a call-out or administration fee on top of their per-circuit rate, and that fixed element typically sits between £50 and £100 for a standard residential job. Understanding both components helps you spot quotes that look cheap upfront but climb once the actual circuit count is applied.

Always ask for a full breakdown showing the call-out fee and the per-circuit rate separately, so you can compare quotes accurately.

Per-circuit rates for domestic properties

For residential properties in England, per-circuit rates typically fall between £20 and £35 per circuit. Rates in London and the South East tend to sit at the higher end of that range because of regional labour costs. A standard three-bedroom house with around 12 circuits would therefore cost roughly £290 to £520 in total, including a typical call-out fee and before any remedial work.

These figures are estimates based on standard circuit counts and current UK pricing norms. Your actual quote may differ depending on the condition of the installation, access, and whether the property has a single consumer unit or more than one.

Per-circuit rates for commercial properties

Commercial properties attract slightly higher per-circuit rates, typically between £25 and £45 per circuit, reflecting the greater complexity of commercial installations and the additional documentation they require. Many commercial properties also have multiple distribution boards, which each carry their own inspection time and add to the overall cost.

Larger commercial premises, such as office blocks or industrial units, may be quoted on a day-rate basis rather than per circuit, particularly where the installation is extensive. Expect day rates for a qualified engineer to fall between £350 and £650, though this varies by contractor and location across the UK.

Domestic fixed wire testing cost examples

Real-world examples make pricing easier to plan around than ranges alone. The figures below are based on standard residential properties across London and the South East, using typical circuit counts and current per-circuit rates. Keep in mind that your actual fixed wire testing cost will reflect the specific condition of your installation, how accessible your consumer unit is, and whether the engineer finds anything that extends the inspection time.

Single flats and small properties

A one-bedroom flat with a modern consumer unit is usually the quickest and most straightforward EICR a domestic engineer will carry out. These properties typically have between six and eight circuits covering lighting, ring mains, and one or two dedicated circuits. At a per-circuit rate of £20 to £35 and a standard call-out fee, you should budget roughly £170 to £380 for a flat in the London and South East region.

If your flat is in a converted Victorian property with older wiring, the inspection may take longer and generate more observations, which can affect the final price even if the circuit count looks the same on paper.

Two-bedroom properties sit in a similar bracket but tend to have slightly more circuits, pushing the typical total to £210 to £450. Most of these properties have between eight and ten circuits, and the inspection usually takes one to two hours for a single-engineer job.

Larger family homes

A three or four-bedroom family home is where circuit counts start to vary more significantly. Some older properties have been extended or rewired in stages, which can leave you with 14 or more circuits across a single consumer unit. At the higher end of the per-circuit range, a four-bedroom home can cost £330 to £730 for a full EICR in London.

Newer builds in this size range often carry more circuits than older equivalents because modern installations separate circuits more granularly for safety reasons. If your property was built after 2000, expect the circuit count to sit towards the upper end of the typical range for your property size, which will push the quote up slightly even if the house is in good condition.

Properties with multiple consumer units

Some domestic properties, particularly large houses or those with an annexe, have more than one consumer unit. Each board carries its own testing time, and most contractors factor this in either as additional circuits or a separate fee per board. Before you accept any quote, clarify in writing whether the price covers every consumer unit on the property or only the main one. The questions below are worth confirming with any contractor:

• How many consumer units does the quote cover?
• Is there an additional charge per board?
• Does the quote include the full written report for all boards?

Commercial fixed wire testing cost examples

Commercial properties vary far more in size, circuit count, and complexity than domestic ones, which makes illustrative pricing examples particularly useful when you are trying to budget. A small retail unit and a multi-storey office block both need an EICR, but the fixed wire testing cost for each looks very different. The examples below are based on typical commercial installations across London and the South East, using current per-circuit rates and standard day-rate benchmarks.

Small commercial premises

Small commercial properties, such as a single-floor office, a retail unit, or a cafe, typically carry between 12 and 24 circuits. At a per-circuit rate of £25 to £45 and a standard call-out fee, you can expect to pay roughly £350 to £1,180 for an EICR on a premises of this size. The inspection usually takes two to four hours and generates a straightforward written report covering all tested circuits.

If your premises has a mix of single-phase and three-phase circuits, tell the engineer before they visit. Three-phase circuits take longer to test and can affect the final price.

Properties in this category with older wiring or non-standard installations, such as a converted shopfront or a listed building, often take longer to inspect because the engineer needs to trace circuits carefully before testing. This adds time rather than circuit count, so ask your contractor how they handle extended inspections before agreeing to a fixed quote.

Larger commercial sites and multi-board installations

Larger offices, warehouses, schools, and industrial units often have multiple distribution boards, sometimes spread across several floors or buildings. Contractors typically quote these jobs on a day-rate basis rather than per circuit, with rates in London and the South East generally falling between £400 and £650 per day for a qualified engineer. A medium-sized office block with three distribution boards might require one to two full days on site.

For these larger sites, the documentation burden also increases. Each distribution board needs its own schedule of circuits, test results, and observations, which adds time to both the on-site inspection and the report preparation. Some contractors charge separately for report writing on complex commercial jobs, so confirm this upfront when you request a quote.

What a fixed wire testing quote should include

A quote for an EICR should give you enough detail to understand exactly what you are paying for before you commit. Vague quotes that list only a total price are a problem because they make it impossible to verify whether the engineer has accounted for your actual circuit count, the number of consumer units on site, or any access challenges. Knowing what to look for protects you from unexpected additions to your bill once the work is done.

A quote that does not specify the circuit count it is based on cannot be considered a firm price.

The core items every quote must cover

When you receive a breakdown of your fixed wire testing cost, check that it lists each of the following elements clearly before you sign anything. Missing even one of them can leave room for the contractor to adjust the price on site.

• Call-out or visit fee: the fixed charge that applies regardless of circuit count
• Per-circuit rate: the individual cost per circuit tested, stated as a number
• Number of circuits included: the count the quote is based on, matched to your installation
• Consumer unit coverage: confirmation of how many boards are included
• Written EICR report: confirmation that a full report is included, not charged separately
• VAT status: whether the quoted figure is inclusive or exclusive of VAT
• Remedial work: a clear statement that remedial work, if needed, is quoted separately

Red flags in quotes to watch for

Some quotes are deliberately structured to look competitive while leaving room for additional charges. A total-only quote with no circuit count is the most common example: the price looks reasonable, but if your property has more circuits than the engineer assumed, the final invoice will be higher. Ask the contractor to confirm the assumed circuit count in writing before the visit.

You should also be cautious about quotes that bundle remedial work into the initial EICR price. A legitimate quote separates inspection from remedial costs because the engineer cannot know what faults exist until the inspection is complete. Any contractor who prices remedial work before seeing the installation is either guessing or padding the quote unnecessarily.

How to keep costs down without cutting corners

Reducing your fixed wire testing cost doesn't mean accepting a lower standard of inspection. It means preparing well, choosing the right contractor, and timing the job sensibly. A few practical steps before you book can make a genuine difference to your invoice without compromising the quality of the report you receive.

Prepare access before the engineer arrives

One of the most avoidable sources of additional cost is wasted time on site. If the engineer arrives and cannot access the consumer unit, distribution boards, or specific areas of the installation, they will either extend the visit or return for a second one, both of which add to your bill. Make sure all panels, cupboards, and electrical enclosures are clear and reachable before the appointment.

Confirm your circuit count in advance if you can. Count the breakers in your consumer unit and pass that number to the contractor when you request a quote. This reduces the chance of a price revision on the day and lets you compare quotes on an equal footing.

Combine testing with other scheduled maintenance

If you manage multiple properties or a commercial premises, booking several EICRs at once from the same contractor will almost always result in a better rate than booking individually. Many contractors reduce their per-circuit rate or waive the call-out fee for bulk bookings because it improves their scheduling efficiency.

Combining your EICR with a PAT testing visit or another compliance inspection can also reduce the total travel and call-out costs across both jobs.

Timing matters too. Booking outside peak periods, typically avoiding the weeks immediately before a tenancy starts or an insurance renewal date, gives you more flexibility to choose a contractor with competitive pricing rather than whoever happens to be available at short notice.

Don't delay remedial work after the inspection

Leaving Code C2 faults unaddressed after an EICR forces a reinspection, which means paying for another visit. Addressing remedial work promptly, ideally through the same contractor who carried out the inspection, avoids that additional cost and keeps your compliance record clean.

When you request a quote, ask the contractor to include a provisional remedial rate at the same time. This gives you a clearer picture of your total potential spend before the inspection takes place, so nothing on the final invoice comes as a surprise.

Next steps

Fixed wire testing is a legal requirement for most landlords and a practical necessity for anyone responsible for a commercial building. This article has covered how fixed wire testing cost is calculated, what per-circuit rates look like across domestic and commercial properties, the factors that shift the final price, and what a proper quote should include. You now have enough detail to assess any quote you receive and push back on anything that looks vague or incomplete.

The most important step you can take now is to get a clear, itemised quote from a qualified contractor before your next inspection date. If you manage a property in London, Greater London, or the South East, our team carries out EICRs for residential and commercial clients every week using transparent, per-circuit pricing. Request a fixed wire testing quote and we will get back to you with a full breakdown based on your actual installation.