Cabling Subcontractor for New Builds and Fit-Outs
Lead a small crew that wires data and telecoms in new developments and office refits for main contractors.
- £5k-20k
- Full-time
- Out and about
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
Running cabling, containment and termination for new housing, apartment blocks and commercial fit-outs, working to the main contractor's programme and specification.
Your first three steps
- Work for an established installer or gain site experience, and get a CSCS card if sites ask for it
- Put together a van, tools, testing equipment and a simple pricing sheet for per-plot and per-point work
- Introduce yourself to local electrical contractors and developers as a reliable subcontractor
Who pays
Property developers, main contractors, electrical contractors and fit-out companies.
How it makes money
Priced per plot, per floor or per point, or on day rates, usually with staged payments as the build progresses.
Skills that help
- Reading plans and specifications
- Managing a small crew and schedules
- Testing and documenting completed work
Watch out for
- Public liability and employer's liability insurance once you take on staff or labour
- Construction Industry Scheme: check how it applies to you as a subcontractor
- Late payment and long payment terms, so check contract terms and cash flow carefully
- Health and safety on building sites, including risk assessments and method statements
- Check the rules on full fibre and gigabit-ready building requirements for new developments
🔒 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 soonQuestions people ask
How much does it cost to start a cabling subcontracting business?
Estimates suggest startup costs are typically around £5,000 to £20,000, depending on tools, testing equipment, insurance and transport. Check contract terms and payment timing so you can plan your cash flow.
How much can a cabling subcontractor earn?
Monthly revenue is typically around £5,000 to £20,000, depending on the contracts you win, crew size and how steady the work is. These are estimates only, and late payment can affect your cash flow.
What rules should I check before subcontracting on building sites?
Check how the Construction Industry Scheme applies to you, your public liability and employer's liability insurance, and site health and safety, including risk assessments and method statements. Also check the full fibre and gigabit-ready rules for new developments.
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