House Rewiresin Mitcham
Rewiring for Mitcham's interwar estate houses and Victorian terraces, for owners, landlords and anyone taking on an older home.
A house rewire in Mitcham often starts from a specific event: buying a home that has not been touched for decades, an inspection report on a rented property, or a fuse board that no longer looks right. TH Electricians LTD is an electrician based in Sutton, roughly three miles south-west of Mitcham, and we carry out full and partial rewires across CR4. This page sets out how the housing here shapes the work and what a rewire involves.

The housing behind the work
Much of Mitcham is Victorian terraces near the Cricket Green, together with very large interwar estates. The St Helier estate and Pollards Hill were built in the 1920s and 1930s, and between them they account for a great many of the homes in the area.
Interwar estate housing is fuse board and rewire stock. A house that went up in the 1930s may still have its original cabling, or wiring that was extended over the years without the old circuits being replaced. The Victorian terraces bring a different set of questions, with older cable types and layouts that were never designed for modern appliances.
Scroll. Watch a room get rewired.
Keep scrollingWalls chased, old cables out, new circuits going in.

House rewire Mitcham landlords and owners ask about
A lot of the interwar housing here is let, which is where landlord inspections come from. A landlord who has an Electrical Installation Condition Report, or EICR, carried out will receive a written statement of the installation's condition, with any faults or items needing attention listed.
Sometimes that report leads to repairs. Sometimes it shows wiring that is best replaced. Owner-occupiers take the same route when they buy: an inspection first, then a decision on whether a full rewire, a partial one or a few targeted repairs is the right answer. We can carry out the inspection and explain what it shows.
See the difference we make.
Seven services, each shown from the problem to the finished job. These are illustrations of typical work; photos from our own jobs are further down the page.

House Rewires
Chased walls and loose cables to a finished, certified room.

Fuse Board Upgrades
Old rewireable fuses out, a modern RCBO consumer unit in.

Lighting Upgrades
One flickering tube replaced with layered LED lighting.

Emergency Electrician
Power out, fault found, lights back on.

CCTV Installation
Discreet cameras and a security light, cables hidden.

Office Fit Outs
A stripped shell to lit, powered desks ready for staff.

Shop Fit Outs
An empty unit turned into a lit, trading shop.

What a full rewire replaces
A full rewire replaces the cables, sockets, switches and lighting connections across the whole property, and in most cases the consumer unit as well. The result is a single tested installation in place of years of additions.
- new cabling for lights, sockets and fixed appliances
- new accessories throughout
- a new consumer unit with RCD or RCBO protection
- testing and certification at the end
A partial rewire does the same for part of the installation only, such as a floor, a kitchen and its supply, or an extension. It suits a house where some of the wiring tests well.

Fuse boards and interwar wiring
Fuse boards and wiring belong together in older estate houses. A board with rewireable fuses and no RCD protection is a common finding, and where the board is that old, the circuits behind it deserve testing too.
Sometimes a new consumer unit is all a house needs for the moment, and sometimes the tests show that the cable behind it should be replaced. We test first, then tell you which applies. Signs that point to closer inspection include:
- rubber or lead-sheathed cable in the roof space or under floors
- a shortage of sockets and heavy reliance on extension leads
- circuits that trip, or lights that flicker

Terraces near the Cricket Green
Victorian terraces are narrower and more compact. There is less space for cable routes, walls are often solid, and any earlier alterations may have hidden how circuits are arranged. A rewire in a terrace needs careful thought about where cable will run and how to keep disturbance to a minimum.
We look at the house on site, talk through the routes and explain where floors or walls will have to be opened. Because a terrace has fewer rooms, the work can be easier to stage, and we agree the order with you before starting.

Certificates, Part P and what you keep
Rewiring is notifiable work in a home, so it is certified under Part P of the Building Regulations. We are NAPIT registered, and when the job is finished you receive an Electrical Installation Certificate with the test results.
For a landlord, that certificate sits alongside the EICR as proof of the state of the installation. For an owner, it is a record to hand over when the house is sold. Either way, it is worth keeping somewhere safe.

Timing, tenants and working in Mitcham
If the house is let, timing matters. A rewire leaves rooms without power for periods and needs access to every floor, so it is easiest when the property is empty between tenancies. Where a tenant is in place, we can talk through what would be affected and how to keep it to a minimum.
Owners planning to move in follow a similar pattern, doing the rewire before furniture and decoration go in. Either way, tell us your dates early and we will say what looks realistic once we have seen the house.
We come to Mitcham from Sutton, and also work in nearby Morden, Hackbridge, Colliers Wood and Beddington. Tell us about the house, how old it is and whether it is lived in or let, and we can explain how we would approach a rewire or an inspection first.
Electrical services in Sutton & surrounding areas.
Planned domestic work, commercial installations and urgent faults. Pick a circuit.
IllustrationWay 01HomesHouse Rewires
Full and partial rewires planned room by room, with the least disruption we can manage.
IllustrationWay 02HomesFuse Board Upgrades
Consumer unit replacements with RCD and RCBO protection, tested and certified.
Our jobWay 03Homes · LetsEICR Safety Reports
Electrical Installation Condition Reports for landlords, buyers, homeowners and businesses.
Our jobWay 04HomesLighting & Sockets
LED downlights, pendants, smart lighting and extra sockets during a renovation.
IllustrationWay 05UrgentEmergency Electrician
Power loss, a board that won't reset, burning smells or sparks. Call us straight away.
Our jobWay 06Homes · BusinessCCTV Installation
Planned, fitted and configured by qualified electricians. No DIY kits, no botched wiring.
Our jobWay 07BusinessCommercial Contractor
Installations, LED upgrades, power distribution, data cabling and planned maintenance.
IllustrationWay 08BusinessOffice & Shop Fit Outs
Full electrical fit-outs for offices and retail units, scheduled around your opening date.
Not sure which service you need? Contact us and we'll point you in the right direction. We also cover shop fit outs in Sutton.
Rewire questions
Does a rented house need rewiring?
Not automatically. An EICR shows the condition of the installation. It may find nothing serious, some repairs, or wiring that should be replaced. The report decides the next step.
What does an EICR involve?
It is an inspection and test of the existing installation, ending in a written report on its condition and anything needing attention. It is a good starting point before deciding on a rewire.
Can you rewire part of a house?
Yes. A partial rewire replaces part of the installation, such as one floor or an extension, and leaves older wiring that tests well. Inspection and testing show whether that is enough.
Will I get a certificate?
Yes. Rewiring is notifiable under Part P, and the work ends with testing and an Electrical Installation Certificate.
Photos from our own jobs.
Control panels, testing, sockets and security lighting. Every photo here was taken on a TH Electricians job, not pulled from a stock library.







To talk about a rewire in Mitcham, call 07907 468 578 or message us on WhatsApp with the address and what you know about the wiring.
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