Rewiring a flat in London is one of the most important investments you can make in your property’s safety, functionality, and long-term value. Whether you’re moving into an older flat, renovating your current home, or ensuring compliance with modern electrical regulations, RCD Electrical is here to help with expert rewiring services across the capital.
But how long does it actually take to complete a full rewire in a typical London flat? The short answer is: between 3 to 7 days—depending on the size of the property, level of access, whether it’s occupied, and how complex the electrical layout is.
In this article, we’ll break down the factors that affect the duration of a rewire, what’s involved at each stage, and why choosing a trusted provider like RCD Electrical ensures your project runs smoothly, safely, and within timeframe.
What Is Involved in a Full Rewire?
A complete rewire means replacing all electrical cables, sockets, switches, lighting circuits, and often upgrading the consumer unit (fuse board). The rewire is typically done in two stages:
1. First Fix
2. Second Fix
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Fitting sockets, switches, light fixtures
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Connecting the consumer unit
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Testing circuits and issuing safety certification
Depending on the condition of the property and your layout preferences, the electrician might also install modern upgrades such as:
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USB sockets
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Spotlights
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Smart thermostats
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Smoke and heat alarms
How Long Does Each Stage Take?
Here’s an estimated breakdown for a standard London flat:
| Flat Size |
First Fix Time |
Second Fix Time |
Total Duration |
| 1-Bedroom (40–50m²) |
1–2 days |
1–2 days |
3–4 days |
| 2-Bedroom (50–70m²) |
2–3 days |
1–2 days |
4–5 days |
| 3-Bedroom (70–90m²) |
3–4 days |
2–3 days |
5–7 days |
Note: These timelines assume good access and a clear working environment. Occupied flats, listed buildings, or properties with limited access may take longer.
Occupied vs Unoccupied Flats
Unoccupied Flats
Ideal for rewiring. No furniture, no tenants, and fewer interruptions. Work progresses faster and mess is minimal.
Occupied Flats
Still possible, but requires careful planning. Temporary power arrangements, daily clean-up, and coordination with occupants will increase the duration—usually by 1–2 days.
Factors That Can Affect Timescales
Flat Size and Layout
Larger properties with more rooms and multiple circuits naturally take longer.
Wall Type
Concrete or brick walls require more labour to chase than plasterboard, affecting the speed of the first fix.
Number of Circuits
More sockets, lighting zones, or additional features like electric underfloor heating can add time.
Finishes and Fixtures
If you're installing bespoke lighting or high-end fittings, these may require more precision during second fix.
Access to Mains & Distribution
Flats in blocks with limited access to mains intake cupboards may require liaison with managing agents or building maintenance teams, which can delay work.
When Should I Consider a Rewire?
You might need a full or partial rewire if:
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The wiring is over 30 years old
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The fuse board is outdated
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Sockets or switches are damaged or discoloured
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You notice flickering lights or frequent tripping
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You’re planning a major renovation or extension
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An EICR (Electrical Installation Condition Report) has flagged issues
If in doubt, book an inspection with RCD Electrical to assess your current setup.
How RCD Electrical Ensures Smooth Rewiring Projects
We take pride in delivering high-quality rewires that are neat, compliant, and cause minimal disruption. Here’s how we make the process as stress-free as possible:
Clear Quotation Upfront
No hidden fees. You’ll receive a detailed quote outlining labour, materials, and timescales before we start.
Project Timeline
We provide a clear schedule and keep you updated throughout the job.
Professional Standards
Our electricians are NICEIC-approved, fully insured, and follow BS 7671 wiring regulations.
Aftercare & Certification
Once the rewire is complete, we issue all relevant safety certificates and can assist with Building Control notifications if needed.
How to Prepare for a Flat Rewire
To help your project go smoothly:
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Clear the space – Move furniture away from walls where possible
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Secure valuables – Rewires can be dusty during the first fix
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Notify neighbours – Especially if noise is expected from wall chasing
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Plan temporary power – For kitchens or essential areas if you're remaining in the flat
We’re happy to guide you through preparation during our initial visit.
How Much Does a Rewire Cost?
While this article focuses on duration, it’s natural to ask about cost. Rewiring a London flat typically starts from £2,000–£5,000+, depending on:
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Size and number of circuits
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Type of fixtures and fittings
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Whether the property is occupied
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Access and structural conditions
Contact us for a bespoke quote with no obligation.
Do I Need Permission to Rewire a Flat?
In most cases, no formal permission is needed. However:
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Leasehold flats: You may need consent from the freeholder or managing agent.
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Listed buildings or conservation areas: Listed Building Consent may be required.
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Council or housing association tenants: Speak with your housing officer first.
We’re happy to advise on all compliance matters as part of our service.
Book a Rewire Consultation with RCD Electrical Today
If you’re considering rewiring your flat in London, trust RCD Electrical for professional, timely, and fully compliant service. From studio flats to three-bedroom conversions, we’ve helped hundreds of Londoners modernise their homes safely and efficiently.
Call: 02034882928
Email: info@rcdelectrician.co.uk
We’ll arrange a site visit, assess your needs, and provide a clear plan—so you can enjoy modern electrics with complete peace of mind.