How much does it cost to rewire a flat in the UK? This guide covers realistic 2026 pricing for studio, one-bedroom, two-bedroom, and three-bedroom flat rewires — including materials, labour, timescales, and the unique challenges of rewiring flats.
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Written and reviewed by Andrew Moore, founder of Elec-Mate, against BS 7671:2018+A4:2026, IET Guidance Note 3 and the IET On-Site Guide.
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A flat rewire replaces all of the electrical wiring, accessories, and the consumer unit in a flat with a completely new installation compliant with BS 7671:2018+A4:2026. It is typically necessary when the existing wiring is more than 25 to 30 years old, when an EICR has identified serious deficiencies, or as part of a major renovation.
Flats present unique challenges compared to houses. Cable routes are often restricted by concrete floors, party walls, and the absence of a loft void. Access to communal risers may be needed for the incoming supply. Despite these challenges, flat rewires are generally less expensive than house rewires because the overall area and number of circuits are smaller.
Common triggers for a flat rewire include: rubber or lead-sheathed cables, aluminium wiring, rewirable fuses with no RCD protection, a failed EICR with multiple C2 observations, or a complete renovation of the flat.
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Here are realistic 2026 costs for flat rewires in the UK, including all materials, labour, testing, Part P notification, and the EIC.
These prices do not include redecoration or plastering after the rewire. Budget an additional £500 to £1,500 for making good, depending on the extent of channelling required.
A comprehensive flat rewire typically includes:
Labour is the largest cost component of a flat rewire. The work is split into two phases:
Running new cables through walls, floors, and ceilings. Installing back boxes for sockets and switches. Running cables to the consumer unit location. This is the most disruptive phase and accounts for approximately 60% of the total labour time. Typically 2 to 5 days depending on flat size.
After plastering and decoration. Installing socket outlets, switches, light fittings, the consumer unit, and connecting all circuits. Testing every circuit and completing the EIC. Typically 1 to 3 days depending on flat size.
Electrician day rates in 2026 range from £250 to £400 depending on location. Many electricians quote flat rewires as a fixed price, which gives certainty to both parties.
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A flat rewire is notifiable work under Part P of the Building Regulations. The electrician must be registered with a competent person scheme to self-certify, or Building Control must be notified before work starts.
Key BS 7671 requirements for a flat rewire include Regulation 411.3.3 requiring 30mA RCD protection on socket outlet circuits up to 32A, all bathroom circuits, and any circuits supplying equipment outdoors (such as a balcony light). Regulation 421.1.201 requires the consumer unit to be a non-combustible enclosure in domestic premises. An SPD must be installed following the risk assessment under Regulation 443.4.
Upon completion, the electrician issues an Electrical Installation Certificate (EIC) covering the design, construction, inspection, and testing of the entire new installation. The homeowner also receives a Building Regulations Compliance Certificate through the electrician's competent person scheme.
Flat rewires often involve practical challenges that house rewires do not. The electrician should only work within the flat's demise — the boundary of your leasehold ownership. Key considerations include:
Flat rewires are profitable domestic jobs with predictable scope. Here are tips for accurate quoting:
Check floor construction (timber or concrete), wall type (plasterboard or solid), access to voids, and the condition of the incoming supply. These factors have the biggest impact on labour time.
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