How Long Does a Rewire Take in 2026? (UK)
A full rewire of a typical 3-bed house takes around 5–10 working days in 2026. A flat is usually 3–5 days, and a large or older property can run to 2–3 weeks. The timeline splits into first fix (cabling) and second fix (accessories and testing), with plaster drying in between. Here is the full stage-by-stage timeline, what makes a rewire take longer, and how to plan around the disruption.
Rewire timeline by property size
As a 2026 guide: a flat or 1–2 bed takes 3–5 days, a typical 3-bed house 5–10 days, and a 4–5 bed or older property 2–3 weeks. Occupied homes take longer than empty ones because work happens room by room rather than all at once.
The two stages explained
First fix is the disruptive part — lifting floors, chasing walls and running new cables back to the consumer unit. Second fix fits sockets, switches, lights and the new consumer unit, then the system is tested and certified. Plaster repairs and drying time sit between the two stages, which is why a rewire spans more calendar days than working days.
What makes a rewire take longer
1. Property size and age
More rooms, more floors and solid older walls all add time.
2. Full vs partial
A full rewire takes far longer than a consumer-unit upgrade or partial rewire of one area.
3. Living in vs empty
An empty property can be rewired in one pass; an occupied home is done room by room to keep power on.
4. Access and finishes
Lifting laminate, tiling and replastering to a high finish all extend the schedule.
Certification
Every rewire must end with an Electrical Installation Certificate and, under Part P, notification to building control. Use an NICEIC or NAPIT registered electrician so the work is self-certified and you receive the right paperwork — essential when you sell.
FAQs
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