Home/Electrician/Guides/Light Switch & Dimmer Fitting — UK Cost Guide

Fit a light switch.

Standard plate, dimmer or smart switch — LED-compatible, tested across the full circuit, by an electrician.

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Top tips

Hiring a electrician, without the regret.

Four moves that separate a smooth job from a nightmare.

Check NICEIC or NAPIT registration.

Part P electrical work must be certified by a registered electrician. NICEIC and NAPIT are the two big ones — verify online before they start.

Demand the EIC certificate.

Any new circuit or consumer unit change needs an Electrical Installation Certificate (EIC). Without it, you can't sell the house cleanly.

Get the EICR before buying.

An Electrical Installation Condition Report on a house you're buying flags hidden rewire jobs. A C1 or C2 finding is a £2k–£8k negotiation lever.

Don't accept a quote without a survey.

Honest electricians lift a few floorboards before quoting a rewire. Anyone quoting a flat rate over the phone is guessing.

Costs & timeline

Know what it costs. Know when it ends.

Indicative UK ranges and what affects price.

Cost range

By job type

Inc. VAT · 2026
Source: NMT quotes
Hourly call-out rate
£50–£100/hr
Day rate
£250–£450/day
New socket or light fitting
£80–£200
Consumer unit upgradeInc. RCDs + cert
£600–£1.5k
EICR full report3-bed house
£150–£400
Full house rewire3-bed, plaster making-good extra
£3.5k–£8.5k
!

Quote spread is typically ± 18% — always get 3 quotes.

At a glance

The Electrician briefing.

Infographic · Video
Infographic

Electrician quick-view

Light Switch & Dimmer Fitting — UK Cost Guide infographic
Video guide

Electrician explained

Swapping a light switch looks like a screwdriver job — but LED loads, two-way wiring and intermediate circuits make it a job worth paying an electrician 30 minutes for. They'll also leave you a minor-works certificate.

What's involved

  • Isolate at consumer unit, test dead
  • Remove old plate, transfer terminals to new switch
  • Check earthing and back-box capacity (smart dimmers need depth)
  • Test through full circuit (one-way / two-way / intermediate)

Typical UK costs (2026)

ItemCost
Standard one-way swap£35–£70
Dimmer swap (LED-compatible)£55–£90
Smart switch / dimmer (Lutron, Shelly)£75–£140
Per visit (multiple switches)£85–£180

What to check

LED-compatible dimmers cost a few pounds more but stop flicker. Smart switches usually need a neutral wire — older UK lighting circuits often only have line + switched-line, which limits options.

This guide was written with AI assistance and is intended for general information only. Prices are estimates based on UK averages and may vary by region. Always get at least three quotes and consult a qualified professional before starting any work.

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