Small electrical contractor for builders and shops

Lead a small team doing wiring and lighting installs for builders, developers and commercial premises.

Electrician installing wiring in a fuse box inside a home.
Startup cost£8k to £30k
Monthly revenue£8k to £30k
Time needed35+ h/week
First incomeMonths
  • £8k-30k
  • Full-time
  • Out and about
  • Licence or permit needed

Estimates for a small start in the UK, not guarantees.

Official data

56,313 UK companies in this field, 24% registered in the last 2 years

SIC 43210 “Electrical installation”. Source: Companies House, November 2026.

What it is

A small electrical contracting firm, you plus an electrician or apprentice, taking on first and second fix wiring, lighting and power for new builds, extensions, shops and offices.

Your first three steps

  1. Make a list of local builders, shopfitters and property managers and introduce your services with a short profile and references
  2. Join a competent person scheme and get public and employer's liability insurance quotes for a two-person team
  3. Agree a trial day rate with one regular contractor, then plan how you will find a reliable second electrician or apprentice
Who pays

Building firms, developers, shopfitters, property managers and small businesses.

How it makes money

Priced contracts or day rates for site work, with materials added. Steady work from a few regular contractors can fill the diary and give predictable income.

Skills that help
  • Recognised electrical qualifications and site experience
  • Estimating, planning and managing jobs
  • Supervising and training others
Watch out for
  • Employer's liability insurance once you take on employees, and check how the rules apply to subcontractors
  • Registration with a competent person scheme and Building Regulations compliance, which differ between UK nations
  • Late payment from main contractors, so check payment terms and consider deposits or staged payments
  • Construction Industry Scheme (CIS) rules for tax deductions on construction work, check with HMRC
  • Site health and safety, risk assessments and method statements, which clients often ask for
  • VAT registration if your turnover grows above the threshold

🔒 Full research report for UK

Real cost breakdown with current prices, licences and registration checklist, local competition, pricing, break-even and a 30-day launch plan, with sources.

Coming soon

Questions people ask

How much does it cost to start an electrical contracting business?

Startup costs are typically around £8,000 to £30,000, depending on your tools, vehicle and the size of your team. These are estimates, so also plan for late payments from main contractors by checking payment terms and staged payments.

What rules should I check before starting as an electrical contractor?

Check registration with a competent person scheme and Building Regulations compliance, which differ between UK nations. Also check employer's liability insurance, Construction Industry Scheme rules with HMRC, site health and safety paperwork, and the VAT threshold.

How much can a small electrical contractor earn?

Monthly revenue is typically estimated at around £8,000 to £30,000, depending on the jobs you win and the size of your team. This is revenue before costs, and you should expect around 35 hours a week or more.

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