Office and commercial rewiring
Full and partial rewires for offices, retail and industrial units, including new circuits for equipment and phased work that keeps the business running.
Commercial rewiringCommercial electricians · Derby & Derbyshire
Commercial electrician in Derby
Electrical installation, rewiring, testing and maintenance for offices, shops, warehouses, industrial units and landlords across Derby and Derbyshire, with the certification your insurer and tenants need.
Quote within 24 business hours: send photos or a short video of the job, with your name, on WhatsApp, or request a quote online.
- Serving Derby since 2009
- NAPIT registered
- Certified to BS 7671
- Single- and three-phase
Electrical contractors for Derby businesses
We work with businesses across Derby and Derbyshire on everything from office rewiring and commercial consumer unit upgrades to multi-point EV charging and commercial alarm systems.
Commercial work differs from domestic in scale, regulation and how much disruption a business can absorb. Offices, warehouses, retail units and industrial premises carry higher loads, more circuits and often a three-phase supply, so every job starts with a site survey and a written specification before we quote.
Whether you're a landlord needing an EICR, a business upgrading its supply for new equipment, or a property owner planning a refurbishment or change of use, you get one point of contact from survey to certification.
Commercial electrical services
The work businesses ask us for most. Each one is surveyed, specified and certified to BS 7671.
Distribution boards and consumer units
Replacing and upgrading commercial boards with RCD and surge protection, and adding capacity when the load grows. Single- and three-phase.
Board and consumer unit upgrades
Commercial and LED lighting
LED upgrades for offices, retail units and warehouses where lights run for long hours, plus emergency lighting as part of a wider installation.
Commercial lighting
EICRs and fixed wire testing
Electrical Installation Condition Reports for landlords, insurers and business premises, with clear findings and a fixed price for any remedial work.
Inspections and testing
Workplace EV charging
Charge points for staff, visitors and fleets, with load management so the site's supply copes. We help with the Workplace Charging Scheme grant.
Workplace charging
Alarms, CCTV and security
Wired intruder alarms and CCTV for shops, offices and units, installed neatly and handed over with full training for your staff.
Business alarms and CCTVHow a commercial job runs
Most businesses can't close for electrical work, so the plan is agreed before anyone picks up a tool.
- Site survey We look at the installation, the supply, the equipment you run and how the premises are used day to day.
- Written specification You get a clear scope and a fixed quote, with any options and their costs set out separately.
- Planned installation Work is phased around your opening hours where possible, so areas stay usable and staff can keep working.
- Testing and certification Every circuit is tested, and you receive the certificates and test results your insurer and landlord will ask for.
Compliance and paperwork
Insurers, landlords and local authorities all expect evidence that a commercial installation is safe. We carry out all work to BS 7671 (18th Edition) and provide the documents that go with it:
- Electrical Installation Certificates for new work and rewires
- Minor Works Certificates for smaller alterations
- EICRs with every observation coded and explained in plain English
- Test results for every circuit, kept on file for repeat work
The IET recommends inspecting commercial premises such as offices and shops at least every five years, and private landlords in England must have an EICR at least every five years. We'll tell you when your next one is due.
Commercial prices
Commercial jobs are priced after a site survey, because the supply, the cable routes and access vary so much. These published figures give a starting point.
| Item | Typical price |
|---|---|
| Commercial smart EV charger unit (RFID, OCPP, load management) | £1,000–£2,000 per unit |
| Workplace Charging Scheme grant, until 31 March 2027 | Up to £500 per socket |
| OCPP charger management software | £100–£500 per year |
| Rewiring, lighting, boards and EICRs for business premises | Fixed quote after survey |
Grant: up to 75% of costs, up to 40 sockets per business. More detail in our EV charger installation cost guide.
Refurbishments, new builds and change of use
We also work on new build and change-of-use projects as part of the wider Derbyshire Specialists Group, giving you a single point of contact for electrical, plumbing, joinery and finishing trades.
That means one programme, one invoice and one guarantee across the whole job, and no gaps between trades when a unit is being fitted out to a deadline.
Commercial electrical work across Derbyshire
From Pride Park and the city centre to industrial estates across the county, including:
- Derby
- Alfreton
- Ashbourne
- Belper
- Heanor
- Ilkeston
- Long Eaton
- Melbourne
- Ripley
- Swadlincote
- West Hallam
- South Normanton
Commercial electrician FAQs
Do you work on three-phase supplies?
Yes. Many offices, warehouses and industrial units run on a three-phase supply, and we install, alter and test three-phase circuits, boards and equipment connections as well as single-phase.
Can you carry out the work without closing my business?
Usually, yes. We agree the programme with you at the survey and phase the work around your opening hours where possible, so most areas stay in use while we work.
How often does a commercial property need an EICR?
The IET recommends at least every five years for commercial premises such as offices and shops, and sooner where the installation is older or heavily used. Private landlords in England must have one at least every five years. Your insurer may set its own timescale.
Do you provide certificates for insurers and landlords?
Yes. Every job comes with the right certificate under BS 7671: an Electrical Installation Certificate for new work, a Minor Works Certificate for smaller alterations, or an EICR for inspections, along with the test results.
Can you install EV chargers for staff and fleet vehicles?
Yes. We install workplace charge points with load management, and can help you apply for the Workplace Charging Scheme, which pays up to £500 per socket for up to 40 sockets until 31 March 2027.
Do you cover the whole of Derbyshire?
We're based in Derby and work across the city and the surrounding towns, including Ilkeston, Long Eaton, Swadlincote, Belper and Ripley. Call to check your location.
Book a commercial site survey
Tell us about your premises and what you need, and we'll arrange a visit and a fixed quote. Send photos of the board on WhatsApp to speed things up.
