How to Price Extra Sockets and Lighting Circuits: First Fix, Second Fix Rate Guide

Quick Answer: Adding a single double socket on an existing ring final circuit prices £75–£140 in 2026, dropping to £45–£85 each in batches of four or more on the same visit. A new downlight on an existing lighting circuit runs £35–£75 per fitting supplied and fitted with mains-voltage GU10s; a complete two-way switching add-on £85–£160; a smart switch upgrade £110–£190. All work in kitchens and bathrooms and any new circuit is notifiable under Part P of the Building Regulations and requires a Minor Electrical Installation Works Certificate (MEIWC) per BS 7671:2018+A2:2022 with circuit testing.

Summary

The "I just need an extra socket" job is one of the most common UK electrical enquiries, and one of the most under-priced. A homeowner thinking about it in isolation sees a 30-minute job. What the electrician is actually pricing is the survey (verifying the existing circuit can take the load and that the ring is not already heavily loaded with spurs), the chase or surface containment, the labour to lift floors or skirting, the test and certification under BS 7671, and the Part P notification trigger if the room is a kitchen or bathroom or if a new circuit is introduced.

Pricing the job correctly hinges on whether the addition can hang off existing wiring or needs a new circuit. A spur from a ring final is the cheapest extension type — quick, but with strict limits under the 18th Edition (one spur per socket on the ring, only one twin socket or one fused connection unit per spur). A new ring main extension or new circuit from the consumer unit adds a notifiable element, more cable, and Building Control involvement when the room qualifies under Part P.

This guide separates the price into the four levers an electrician adjusts: scope (sockets versus lights versus circuits), containment (chase-and-make-good versus surface trunking versus loft access), notification (Part P trigger or no), and certification (Minor Works versus Electrical Installation Certificate). Quote line items mirror those four levers. Customers searching "how much to add a socket" or "cost to add downlights to a room" should match a clear scope tier from the table below.

Key Facts

Quick Reference Table

Spending too long on quotes? squote turns a 2-minute voice recording into a professional quote.

Try squote free →
Job Typical 2026 price (fitted) Time on site Certificate Part P notifiable?
Single double socket on existing ring (spur) £75–£140 1–2 hours MEIWC Only if kitchen/bathroom
Single double socket cut into ring main £100–£170 1.5–2.5 hours MEIWC Only if kitchen/bathroom
4 × double sockets in same room (one visit) £180–£340 total 3–4 hours MEIWC Only if kitchen/bathroom
Spur to fused connection unit (e.g. boiler/extractor) £85–£160 1.5–2 hours MEIWC Yes (special locations)
Outdoor IP65 socket on existing circuit (RCD-protected) £140–£260 2–3 hours MEIWC Notifiable if new circuit
New ring final from CU (e.g. extension to kitchen) £450–£850 half/full day EIC Yes
New radial (utility room dedicated) £350–£650 half day EIC Yes
Single GU10 downlight on existing lighting circuit £35–£75 30–60 min MEIWC Only if bathroom (zones)
6 × downlights in living room £210–£420 half day MEIWC No (typical living room)
6 × downlights in kitchen £240–£460 half day MEIWC Yes — kitchen
Pendant relocation (1–2 m move) £85–£140 1–2 hours MEIWC No
Two-way switching conversion £85–£160 1.5–2.5 hours MEIWC No
Smart switch upgrade per gang £110–£190 30–60 min MEIWC No (no new circuit)
Bathroom GU10 downlight (IP65, zone-compliant) £55–£110 1–2 hours MEIWC Yes — bathroom
LED strip under-cabinet kit (3–4 m, driver, switch) £180–£340 2–4 hours MEIWC Yes if kitchen

Detailed Guidance

Spurring from a Ring Final — What 18th Edition Allows

The cheapest socket addition is a spur from an existing ring final circuit. Under BS 7671:2018+A2:2022 (the 18th Edition Wiring Regulations) the rules are specific: one un-fused spur per socket on the ring, terminating in either one twin socket outlet, one single socket outlet, or one fused connection unit. A spur cannot itself be spurred from. A ring already heavily spurred should not be extended further — at that point the right answer is a ring main extension (cutting in) or a new circuit.

Pricing a spur reflects:

Total typically £75–£140 fitted on standard rates; £130–£220 in London.

The spur price assumes the ring has clear access to cut in nearby — through floorboards, into a stud wall, or behind an existing skirting. Awkward routes (chasing into solid masonry over distance, lifting tiled or laminate floors) push the price toward the upper end or beyond.

Cutting Into the Ring Main Itself

For a robust addition that is not subject to the one-spur-per-socket limit, the new socket is cut into the ring directly. Both legs of the ring are extended through the new accessory, restoring the ring continuity. This costs more in labour because both ring conductors must be located, lifted, and re-terminated.

Pricing typically £100–£170 fitted in standard regions. The cost premium over a spur is 25–40% reflecting the extra labour of working with both legs of the ring.

Batch Pricing — Why Quantity Drops the Per-Item Rate

Mobilisation cost is a fixed component of any electrical visit: travel, materials sourcing, set-up, testing, certification, paperwork. Spreading it across multiple sockets in one visit produces sharp economies.

A typical 4-socket visit:

At a mid-range £320/day (8 hours), this is 50–60% of a day, plus £60–£80 in materials. A reasonable quote is £180–£340 for the four sockets, equating to £45–£85 each — half the unit rate of a single-socket visit.

The lesson for customers: bundle electrical wishes into one visit. Adding three more sockets to an "I just need one socket" job is rarely 4× the price.

Chase, Surface Trunking, or Loft Access

The largest single labour variable is how the new cable runs. Three approaches in descending order of cost:

Chase into solid masonry, plaster make-good — most common for first-fix on a brick or block wall. Chasing channel 25 mm wide × 25 mm deep typically takes 30–60 minutes per metre with an SDS chaser. Plaster make-good 30–60 minutes per metre. Total labour 1–2 hours per metre of chase. Most expensive but tidiest finish.

Surface trunking (mini-trunking) — runs the cable in a clip-on plastic profile fixed to the wall surface. Visible but installed in 5–10 minutes per metre. Often used in garages, sheds, lofts, or where the customer is willing to accept the surface profile to save money. Saves 30–50% on labour but the room is not finished as flush.

Loft access — drops the cable down through a stud wall from the loft if the wall is single-skin plasterboard with cavity. No chase, no surface trunking. Quickest where access exists. Price comparable to or below surface trunking. Limited to upstairs room ceilings or upper-floor walls.

The customer rarely thinks about this trade-off; the electrician must explain it at quote stage. A quote line that says "chase and make-good £x, alternative surface trunking £y" lets the customer decide informed.

Downlights on an Existing Lighting Circuit

LED downlights with mains-voltage GU10 fittings are the dominant UK domestic install. Pricing per fitting:

Per-fitting price range £35–£75 supplied and fitted on existing circuit, dropping to £35–£55 when 6+ in the same room. New circuits not normally needed for typical 6–10 downlight rooms — existing 6 A lighting circuit comfortably carries 50+ LED GU10s at 5 W each (250 W total versus 1380 W circuit capacity).

Fire-rated downlights are required where the ceiling is part of the fire compartment line — typically the ceiling above which there's a habitable room. BS 476-23 30/60/90 minute rated fittings (e.g. Aurora AU-FRD8 or Aurora EFD-Pro) are typically £18–£35 each. The cost differential is £8–£18 per fitting over a non-rated equivalent.

Bathroom downlights must meet zone IP rating per BS 7671 Part 7 Section 701: zone 1 (above bath/shower) needs IP65, zone 2 (within 0.6 m horizontally) needs IP44 minimum. Most bathroom downlights are fitted as IP65 throughout for simplicity. Premium £8–£15 per fitting for IP65 over standard.

USB Sockets, Smart Switches, and Premium Accessories

Several upgrades sit on top of the base socket or switch installation:

Two-Way Switching Add-On

Converting a single switch to two-way (e.g. landing light controllable from upstairs and downstairs) requires a strap cable from the existing switch to the second switch position. Pricing reflects the cable run length, accessibility, and number of conductors needed.

A typical 4–6 m run with loft or floor access: £85–£160. A run requiring chase across plastered walls: £120–£220. Materials cost is small (a few metres of 1 mm² T&E and the second switch); labour dominates.

The trade detail to know: standard two-way wiring uses 3-core-and-earth strap cable. The terminations matter — both switches must be fed via a 3-pole switch (common, L1, L2). Older domestic two-way installations sometimes used 2-core-and-earth on a "loop in" pattern; modern installs always use 3-core-and-earth.

Part P — When Notification Is Required

Part P of the Building Regulations applies in England and Wales (separate but similar regimes in Scotland and Northern Ireland). Notifiable work since the 2013 amendment is limited to:

  1. Installation of a new circuit
  2. Replacement of a consumer unit
  3. Any work in a special location: room containing a bath or shower, swimming pool, or sauna

Ordinary additions to existing circuits in living rooms, bedrooms, hallways, lofts, and gardens are NOT notifiable since 2013. A spur added to a bedroom socket is not notifiable. A new socket in a kitchen IS notifiable (kitchen is no longer a special location since 2013, but adding a socket near a sink or a new circuit still triggers notification under "new circuit" rule). A bathroom downlight IS notifiable. An outdoor socket on an existing circuit is notifiable only if it constitutes a new circuit.

For pricing, notification adds:

A quote that uses an electrician registered with NICEIC or equivalent is almost always cheaper than going through Building Control direct, because the scheme membership costs the electrician approximately £300–£700 per year amortised across all their jobs.

See the full Part P notification scope for the precise rules.

Testing and Certification

Every electrical alteration requires testing and certification to BS 7671. Two forms apply:

Both certificates require:

The testing typically takes 20–40 minutes for a simple addition, included in the quoted price. The certificate is issued to the customer and lodged with the CPS scheme database. A copy is required for: house sale (HIP/EICR), insurance claims, landlord compliance.

Day Rate vs Fixed-Price Job

A working electrician's day rate in 2026 is £260–£380 in standard regions, £400–£550 in London. Fixed-price is normally used for clearly-defined scope ("add 4 sockets and 6 downlights"). Day rate is used for variable or investigative work where scope can't be pinned down at quote stage.

Frequently Asked Questions

Why does a "simple" socket cost £100+?

A £100 single-socket addition is buying: 30 min of survey (verifying the ring isn't overloaded), 60–90 min of installation labour (cable run, chase, accessory fitting), 30 min of test and certification, and the electrician's overhead (van, insurance, scheme membership). The accessory is £8–£18 and the cable £6–£14 — labour is the bulk of the price.

Is it cheaper to use surface trunking instead of chasing?

Yes, by 30–50% on the labour line. Surface trunking is fitted in 5–10 minutes per metre versus 30–60 minutes per metre for chase and make-good. The trade-off is appearance — visible white plastic profile. In garages, lofts, sheds, and utility areas, surface trunking is the normal choice; in living rooms and bedrooms, chase-and-make-good is standard despite the cost.

Do I need new lights when I get extra sockets?

No — sockets and lighting are on completely separate circuits (lighting on a 6 A radial, sockets on a 32 A ring final). Adding sockets does not require lighting work. Many electricians offer a discount if both are done on the same visit because mobilisation cost is shared.

When does the work become "notifiable" under Part P?

When you install a new circuit, replace a consumer unit, or do work in a bathroom or shower room. Adding sockets to an existing ring in a kitchen, bedroom, or lounge is not notifiable since the 2013 amendment. A new socket on a new circuit IS notifiable because the circuit is new. The electrician should clarify in the quote which work is notifiable and confirm CPS registration.

Regulations & Standards