How to move into commercial electrical work UK

Domestic electrical work is competitive. Most areas of the country have plenty of registered domestic electricians, and customers routinely get three or four quotes for the same job. Commercial work is a different market. The pool of qualified contractors who can confidently handle a commercial fit-out, a retail unit rewire, or a section 6 EICR is smaller, the jobs are bigger, and the relationships with clients tend to be longer term.

If you're already a qualified electrician with a few years of domestic experience, moving into commercial work is achievable — but it does require additional qualifications and a different approach to how you price, document, and deliver work.

How commercial electrical work differs from domestic

The fundamentals of electrical installation are the same, but the context is different in several important ways.

Scale and complexity: commercial installations typically involve three-phase supplies, distribution boards with higher fault levels, more complex containment systems (trunking, dado trunking, cable management), emergency lighting systems, fire alarm interfacing, and data and AV infrastructure. The coordination with other trades is more involved.

Documentation requirements: every commercial installation requires full Electrical Installation Certificates, test results, and often as-built drawings. The documentation burden is heavier than on domestic jobs and clients expect organised, complete paperwork at handover. An EICR on a commercial property is also more involved than a domestic one — you may be testing hundreds of circuits across multiple distribution boards.

Working hours and site rules: much commercial refurbishment work happens outside trading hours to minimise disruption to tenants or businesses. Retail and office fit-outs often run through nights and weekends. Construction sites have welfare requirements, site inductions, permit-to-work systems, and tool register processes you don't encounter on domestic jobs.

Client type: commercial clients are typically property managers, main contractors, facilities managers, or M&E consultants. These are repeat-business relationships. A good relationship with one main contractor or facilities company can provide years of consistent work.

Qualifications you need for commercial work

Core electrotechnical qualifications

The minimum qualification base for commercial electrical work is the same as for domestic — but the route matters. To work across domestic, commercial, and industrial installations in the UK in 2026, you need:

• NVQ Level 3 in Electrotechnical Services — the full competency-based qualification. This is what distinguishes a fully qualified installation electrician from a domestic installer. Domestic installer qualifications (often a Level 3 Diploma without the NVQ) restrict you to domestic work scope only.
• AM2 practical assessment — the Achievement Measurement 2 is a practical exam that tests real installation competence. Required for the ECS Gold Card.
• 18th Edition Wiring Regulations (BS 7671:2018 + A2:2022) — your BS 7671 certification must be current. Note that Amendment 4 was due in April 2026 — check the IET website for the latest position and whether your existing certification covers it.

ECS Gold Card

The ECS Gold Card (Electrotechnical Certification Scheme) is the industry standard identity card for commercial and industrial electrical work. Most main contractors, facilities managers, and M&E contractors specify "Gold Card only" and will turn domestic installer applicants away at the gate.

To hold an ECS Gold Card as an Installation Electrician, you need the NVQ Level 3, AM2, and a current BS 7671 qualification. You also need to pass the ECS Health, Safety, and Environmental Assessment (an online test). The card is renewed every five years.

Health and safety qualifications

For site work, you'll typically need:

• CSCS card (or ECS card, which is accepted on most sites in place of CSCS)
• SSSTS (Site Supervisor Safety Training Scheme) if you'll be supervising work on site — a two-day course
• SMSTS (Site Management Safety Training Scheme) if you're managing a site or running your own contracts — a five-day course
• Working at height — IPAF or PASMA if working from MEWPs or mobile scaffolding

Some commercial clients also require asbestos awareness training (half-day online course) because older commercial properties frequently contain asbestos in ceiling tiles, partitioning, and floor coverings.

Additional qualifications worth having

Commercial electrical work in 2026 increasingly overlaps with other systems. The electricians who command the best rates are those who can also handle:

• Emergency lighting — City and Guilds 2377 Design, Installation, Commissioning and Maintenance of Emergency Lighting Systems
• Fire alarm systems — City and Guilds 2850 (or equivalent) for installation and commissioning of fire detection and alarm systems
• EV charging installation — IET/City and Guilds courses now cover commercial EV charger installation, which is growing rapidly in commercial car parks and fleet depots
• Solar PV and battery storage — BS 7671 Chapter 82 now specifically addresses prosumer installations. Commercial solar and battery projects are becoming routine for electricians with this knowledge.

You don't need all of these on day one. Pick one or two that fit your local market and add them progressively.

Getting your first commercial clients

Work for a main contractor first

If you currently work as a sole trader on domestic jobs, the fastest route into commercial work is often to take a subcontractor position with an M&E company or main contractor on a commercial project. This gives you site experience, references, and an understanding of how commercial jobs are run before you're tendering for them independently.

Commercial work has its own rhythm and processes. Learning it as a subcontractor before taking your own contracts reduces the risk of underpricing or missing something in the specifications.

Facilities management companies

Facilities management (FM) companies manage maintenance contracts across office buildings, retail parks, schools, hotels, and industrial units. They need reactive maintenance electricians who can respond quickly and produce correct documentation. FM work is often reactive rather than planned — an emergency call-out to fix a failed distribution board or restore power to a server room.

FM companies tend to work with a vetted list of sub-contractors. Getting onto one of these lists typically involves providing evidence of qualifications, insurance, and references, then completing a site-specific induction. Once you're on the list, the calls come to you rather than you tendering for each job.

Property developers and commercial landlords

Commercial landlords with multiple properties need EICRs, periodic inspection and testing, and fit-out work for new tenants. A single landlord with a portfolio of 20 or 30 commercial properties can sustain a significant proportion of a sole trader's workload. Find them through commercial property agents, local business networking groups, or by approaching commercial property management companies directly.

Letting agents and managing agents

Electrical safety regulations for commercial lettings mean landlords need regular EICRs and remedial work. Building relationships with commercial letting agents works similarly to the domestic lettings market — once you're the preferred electrician for a portfolio, the work comes in regularly.

Pricing commercial electrical work

Commercial work is generally priced differently from domestic. Day rates for qualified commercial electricians in 2026 range from £280 to £420 depending on location and specialisation, with London at the upper end. For larger contracts, tender pricing is the norm.

When tendering commercial work, read the specification carefully. Commercial electrical specs are often produced by M&E consultants and specify exact products, installation methods, and testing requirements. Pricing to a different spec from what's been specified will either lose you the contract or create problems during the project when substitutions aren't accepted.

Quote clearly and specifically. A vague quote on commercial work causes problems when the client's quantity surveyor reviews it against the spec. Use a quote generator to structure your commercial quotes properly — referencing the specification document, breaking down costs by section, and clearly defining what is and isn't included.

Commercial invoicing needs to be equally clean. Invoices that reference the correct purchase order numbers and match the payment schedule in the contract get paid. Those that don't get queried and delayed. An invoice generator that lets you set payment terms and track outstanding amounts helps you stay on top of a busier commercial workload.

To understand whether your day rate is actually covering your overheads and producing the profit you need, use a day rate calculator before you price work. Commercial jobs involve more non-billable time — site inductions, documentation, compliance sign-offs — than domestic work, and your rate needs to account for that.

Insurance and compliance for commercial work

Public liability insurance of at minimum £5 million is expected for commercial contracts. Many main contractors and FM companies require £10 million. Employers' liability is legally required if you employ anyone. Professional indemnity insurance is worth considering if you're doing any element of design, specification, or surveying work.

On commercial sites you'll also encounter requirements for method statements and risk assessments (RAMS) before work can start. Having templates for the most common tasks you carry out — panel work, cable installation, testing, containment installation — saves time and makes you look professional when the site manager asks for them on a Monday morning.

Frequently asked questions

Can a domestic installer work on commercial properties?

Technically, domestic installer qualifications restrict your scope to domestic work. For commercial installations, the full NVQ Level 3 in Electrotechnical Services and the ECS Gold Card are expected. Most commercial sites will not allow you on site without a Gold Card, and most M&E companies and facilities managers will not engage contractors without one.

Do I need to join a competent persons scheme for commercial work?

Competent person schemes like NICEIC, NAPIT, and ELECSA are primarily a domestic requirement under Part P. Commercial work is assessed and certified differently — through Electrical Installation Certificates and EICRs rather than building regulation notifications. However, being registered with a scheme is a mark of credibility and some commercial clients prefer registered contractors.

What is the AM2 and do I need it for commercial work?

The AM2 (Achievement Measurement 2) is a practical assessment that forms part of the qualification pathway for the ECS Gold Card. It demonstrates installation competence in a controlled environment. It is not separately required for commercial work — it's part of the NVQ Level 3 pathway. If you completed a domestic installer qualification route that did not include the AM2, you will need to complete it to obtain the Gold Card.

How much more can I earn in commercial electrical work versus domestic?

Commercial electricians typically earn 20 to 40 per cent more than those working exclusively on domestic jobs. Day rates for commercial work in 2026 range from £280 to £420, compared to £200 to £320 for domestic work in most regions. Contract pricing can be even more lucrative if you develop the ability to manage larger projects and sub-contractors.

What insurance do I need to work on commercial sites?

At minimum, £5 million public liability insurance. Many commercial clients and main contractors require £10 million. Employers' liability is required if you have employees. For any design or specification work, professional indemnity insurance is advisable. Check the specific requirements in any contract documents before starting work.