For businesses, an EICR is usually called a fixed wire test or periodic inspection. Unlike rented homes, there is no single legal interval. Instead the Electricity at Work Regulations 1989 require installations to be maintained so as to prevent danger, and periodic inspection and testing is the accepted way to demonstrate that to insurers, auditors and enforcing authorities.
Recommended intervals by building type
The IET’s guidance gives maximum recommended intervals between inspections. The inspector sets the actual date in each report.
| Premises | Maximum recommended interval |
|---|---|
| Offices, shops, restaurants, hotels | 5 years |
| Educational establishments, hospitals, laboratories | 5 years |
| Industrial premises, agricultural buildings | 3 years |
| Cinemas, theatres, places of public entertainment, leisure complexes | 1–3 years |
| Swimming pools, petrol stations, launderettes, marinas | 1 year |
| Construction site installations | 3 months |
How commercial EICRs are priced
Commercial testing is priced per circuit and per distribution board, with three-phase circuits and large boards taking longer. Market pricing typically starts around £170–£190 for the first 10–12 circuits, then a per-circuit rate, or a day rate for large sites. Our EICR calculator estimates a 30-circuit, two-board commercial unit from around £535 and adjusts for extended and 24/7 operating hours.
Testing without disruption
- Phased testing, one board or floor at a time
- Out-of-hours and weekend testing
- Coordinating with IT for servers, tills and security systems
- Pairing with a thermal imaging survey, done live, to spot issues between tests
Landlord or tenant: who is responsible?
In commercial leases, responsibility depends on the lease. Typically the landlord is responsible for landlord-controlled areas and the building’s supply, while tenants are responsible for the installation within their demise. Check the repairing covenants, and keep copies of every report in one place. Our portfolio dashboard does that across every building.
Related compliance
Most commercial premises also need emergency lighting testing, fire alarm servicing and a risk-based PAT programme. Use the free commercial risk checker to see where the gaps are.