Commercial premises carry electrical compliance obligations beyond what applies to a typical home, driven by higher occupancy, insurance requirements and workplace safety law. Understanding what's actually required — and how it differs across offices, retail units, kitchens and workshops — makes it far easier to stay compliant without over-testing or missing something an insurer or inspector will ask about.
This guide covers commercial EICR frequency, PAT testing, fire alarm and emergency lighting checks, and how record-keeping ties it all together.
Why Commercial Compliance Differs from Domestic
Businesses are responsible under the Electricity at Work Regulations for keeping electrical systems and equipment safe for staff, customers and contractors — a broader duty than a homeowner's. A domestic property answers to one household; a commercial unit answers to every employee, visitor and contractor who passes through it, which is why the compliance bar sits higher.
EICR Frequency for Commercial Premises
Commercial EICR intervals are generally shorter than domestic — often every 3 to 5 years depending on the type of premises and how the installation is used, and insurers or landlords may specify their own requirement on top of the general guidance.
| Premises Type | Typical EICR Interval |
|---|---|
| Standard office | Every 5 years |
| Retail unit | Every 5 years |
| Commercial kitchen | Every 1 to 3 years, higher electrical load |
| Workshop or industrial unit | Every 3 years, depending on equipment risk |
PAT Testing Obligations
Portable appliances used in the workplace — kettles, monitors, power tools — should be tested on a schedule that reflects how they're used and how much risk they carry, rather than a single blanket interval applied to every item on site. Our guide to PAT testing covers how frequency and cost are assessed appliance by appliance.
Fire Alarm and Emergency Lighting Checks
Commercial premises typically need periodic testing of fire alarm systems and emergency lighting on escape routes, separate from the general electrical installation checks. These systems protect people during an evacuation, so they're tested on their own dedicated schedule rather than folded into the EICR.
Emergency Lighting Testing
Emergency lighting on escape routes needs a brief monthly function test and a full annual discharge test, where the lighting runs on battery power for its rated duration to confirm it will perform in a real outage. These tests are usually logged in a dedicated emergency lighting log book alongside fire alarm records.
Insurance and Compliance
Many business insurance policies require a current, satisfactory EICR as a condition of cover — an out-of-date certificate can affect a claim, and some insurers will ask to see it before renewing a policy at all. Treating compliance testing as an insurance requirement, not just a legal one, helps avoid a gap that only surfaces after something's gone wrong.
Keeping Records
Keep copies of EICRs, PAT testing records and alarm/emergency lighting test logs together — they're usually the first thing requested during an insurance review or licensing inspection. A single, organised file also makes it far quicker to answer a landlord's or lender's request for evidence of compliance.
| Record | Who Typically Requests It |
|---|---|
| EICR | Insurer, landlord, local authority |
| PAT testing certificate | Insurer, health and safety inspector |
| Fire alarm test log | Fire authority, insurer |
| Emergency lighting log | Fire authority, insurer |
Choosing a Compliance Schedule
Rather than treating EICRs, PAT testing, fire alarm checks and emergency lighting tests as separate, unrelated jobs, most businesses find it easier to align them on a single recurring schedule — reducing the number of site visits and making it simpler to keep one clear compliance record.
Commercial Compliance Checklist
- EICR within the appropriate interval for your premises
- PAT testing on portable equipment
- Fire alarm system testing
- Emergency lighting monthly and annual tests
- Records available for insurers and inspectors
How Commercial Pricing Differs from Domestic
Commercial EICRs and PAT testing are typically priced higher than domestic equivalents, reflecting larger installations, more circuits and higher-risk equipment. See our EICR cost guide for the factors that drive pricing on any property, commercial or domestic.
Who Holds Responsibility in a Leased Building
In a multi-let commercial building, compliance responsibility often splits between landlord and tenant depending on what's named in the lease — typically the landlord for shared and base-build infrastructure, and the tenant for anything installed within their own unit. Confirming this in writing before work is needed avoids disputes over who arranges and pays for testing. Where a business is also managing HMO-style shared accommodation on the same site, our guide to HMO electrical safety covers the additional requirements that apply there.
Getting a Compliant Site Assessed
The starting point for any commercial site — new lease, first EICR, or reviewing an existing schedule — is a walk-through assessment of what's actually installed: number of circuits, distribution boards, portable equipment and fire safety systems. From there, a realistic testing schedule and cost can be set, rather than guessing based on floor area or headcount alone. For the underlying legal duty this all sits under, see the HSE's guidance on electricity at work.
Related reading: our guide on smoke alarm wiring rules covers this in more depth.
What an Assessment Visit Involves
A first commercial compliance visit typically starts with a walk-through of the site to map out distribution boards, circuit counts, portable equipment and fire safety systems already in place. From there, the electrician checks each circuit against BS 7671, tests portable appliances against their risk category, and reviews the condition of fire alarm and emergency lighting systems where present. The result is a clear picture of what's compliant now, what needs remedial work, and what schedule keeps the site compliant going forward.
Common Compliance Gaps in Commercial Premises
Certain gaps come up repeatedly across office, retail and workshop sites. Distribution boards installed years ago are often found overloaded once additional equipment has been added over time. Portable appliance registers frequently fall out of date when equipment is replaced without updating the paperwork. And emergency lighting batteries, which degrade with age even if the fitting itself still looks fine, are a common source of failed annual discharge tests. None of these are unusual to find — they simply need identifying and resolving as part of a proper compliance review.
Multi-Tenant and Managed Buildings
Buildings with several tenants sharing common infrastructure — a reception area, lift lobby, shared plant room — need compliance testing that covers both the landlord's shared systems and each tenant's own fit-out. In practice this often means separate EICRs for shared and demised areas, tested on schedules that may not align, which is why clear responsibility and a shared record of what's been tested where matters more in a managed building than in a single-occupier unit.
Planning Compliance Around Business Operations
Testing doesn't have to disrupt trading. EICRs and PAT testing can usually be scheduled outside operating hours or circuit by circuit so power isn't lost across the whole site at once, and fire alarm and emergency lighting tests are quick enough to fit around a working day with minimal disruption. Booking with enough notice, particularly for larger sites with multiple distribution boards, makes it easier to plan testing around business needs rather than around the electrician's availability alone.
Compliance Costs by Premises Type
Pricing for commercial electrical compliance varies more than domestic work because premises types differ so much in circuit count, equipment risk and testing frequency. A small office with a handful of circuits and low-risk appliances costs far less to keep compliant than a commercial kitchen with high-load equipment tested annually. Getting a fair price means giving an accurate picture of the site rather than comparing a quote against a generic "per EICR" figure.
| Premises Type | What Drives Cost |
|---|---|
| Office | Circuit count, number of PAT-tested appliances |
| Retail unit | Shopfront lighting, till and display equipment |
| Commercial kitchen | High-load equipment, shorter testing interval |
| Workshop or industrial unit | Machinery, three-phase supply, equipment risk level |
How Compliance Needs Vary by Business Type
Beyond EICR intervals, the practical shape of a compliance schedule differs by what a business actually does on site. An office mainly needs to manage IT equipment, general lighting and a modest number of sockets — usually the most straightforward premises type to keep compliant. A retail unit adds shopfront and display lighting, till systems and, in many cases, public access, which raises the bar for emergency lighting and fire alarm provision. A commercial kitchen combines high-load cooking equipment with frequent appliance turnover, meaning both EICR and PAT testing tend to run on shorter cycles. A workshop or industrial unit often runs three-phase supplies and machinery that need testing and risk-assessing on their own terms, separate from the general office-style circuits in the same building.
When to Bring In an Electrician Beyond Scheduled Testing
Outside the regular testing calendar, a few situations call for an assessment sooner: a change of use for the premises, a new fit-out or refurbishment, a change of tenant taking over an existing unit, or any electrical fault, burning smell or repeated tripping that suggests a problem the last EICR wouldn't have caught. Waiting for the next scheduled test in these situations risks operating with an installation that no longer matches what the last report assessed.
Frequently Asked Questions
How often does a commercial EICR need renewing?
It varies by premises type and use, typically every 3 to 5 years — we can confirm the appropriate interval for your business.
Who is responsible for electrical compliance in a leased unit?
This depends on the lease terms — sometimes the landlord, sometimes the tenant. It's worth checking your lease and confirming responsibility in writing.
Does compliance differ by business type?
Yes. Premises like commercial kitchens or workshops with higher electrical loads and equipment risk typically warrant more frequent testing than a standard office.
What records should we keep?
EICRs, PAT testing certificates, and fire alarm/emergency lighting test logs, kept together and readily available for insurers or inspectors.
