Bathroom Electrical Cost: UK Price Guide 2026

Individual Job Costs

• Extractor fan installation — £150 to £350. Includes fan unit (£40 to £120), ducting, wiring from the lighting circuit or a dedicated spur, and connection to a pull-cord or light switch timer.
• Bathroom downlights (4 to 6 fittings) — £250 to £500. Includes IP65-rated LED downlights (£15 to £35 each), wiring, fire-rated housings, and testing. IP65 fittings are required in Zone 1.
• Shaver socket installation — £80 to £180. A shaver supply unit conforming to BS EN 61558-2-5 costs £25 to £60. Labour to install and wire: 1 to 2 hours.
• Heated towel rail connection — £80 to £200. A fused connection unit (FCU) and wiring from a nearby circuit. The towel rail itself is a separate plumbing or purchase cost.
• Electric underfloor heating connection — £300 to £600. Heating mat, thermostat, dedicated circuit from the consumer unit, and RCD protection.
• Electric shower installation — £300 to £600. Requires a dedicated circuit from the consumer unit with appropriately rated cable (typically 10mm² for a 9.5kW shower), 45A MCB/RCBO, and pull-cord isolator switch.
• Full bathroom rewire — £800 to £1,500. All circuits replaced or newly installed: lighting, fan, shaver socket, towel rail, underfloor heating, and shower circuit. Includes testing and EIC.

• Electrician day rate (2026) — £250 to £400 depending on region. London and the South East sit at the higher end.
• Simple bathroom job (fan or light swap) — 1 to 3 hours labour. Most electricians will quote a fixed price of £100 to £200 plus materials.
• Full bathroom first fix and second fix — 1 to 2 days across two visits (first fix before tiling, second fix after). Labour: £400 to £700.
• Part P notification — £35 to £80 through the electrician's competent person scheme. This is included in most quotes.

• Access — bathrooms with loft access above make cable runs straightforward. Bathrooms on ground floors below a first floor with no accessible void require lifting floorboards or channelling walls, adding time and cost.
• Existing wiring condition — if the existing bathroom circuits are in good condition and have RCD protection, adding a fitting is simpler. If the wiring is old (no earth, no RCD), a more extensive upgrade is needed.
• Consumer unit capacity — if a new dedicated circuit is needed (electric shower, underfloor heating) and the consumer unit has no spare ways, a board upgrade may be required.
• Fitting specification — basic IP65 downlights cost £15 each; designer IP65 downlights can cost £50 or more. The specification of fittings significantly affects the material cost.
• Coordination with other trades — bathroom renovations usually involve plumbers, tilers, and carpenters. If the electrician needs to make multiple visits (first fix and second fix), this adds to the labour cost.

• RCD protection (Regulation 411.3.2) — all circuits serving the bathroom must be protected by a 30mA RCD. This provides additional protection against electric shock in a high-risk environment.
• Zone compliance (Section 701) — all equipment must be suitable for the zone in which it is installed, with appropriate IP ratings and SELV where required.
• Supplementary bonding (Regulation 701.415.2) — supplementary equipotential bonding may be required connecting all simultaneously accessible exposed and extraneous conductive parts, unless all circuits are RCD-protected and the main bonding is satisfactory.
• Certification — an Electrical Installation Certificate (EIC) must be issued for new circuits. A Minor Electrical Installation Works Certificate (MEIWC) may be appropriate for like-for-like replacements on existing circuits.

• Competent person scheme registration — NICEIC, NAPIT, or ELECSA registration is essential for Part P self-certification.
• Experience with bathroom installations — ask whether they regularly carry out bathroom work and understand the zone requirements.
• Itemised quote — the quote should list each item (fan, lights, shaver socket, circuits) with materials and labour separated.
• Coordination willingness — a good electrician will coordinate with your bathroom fitter on first fix and second fix timing.