
Your home’s wiring sits behind the plaster doing its job quietly, which is exactly why it gets forgotten. Over time it degrades, and wiring installed decades ago was never designed for the electrical load a modern household puts through it. When wiring reaches that point, the risks are serious: electrical fires and electric shock among them.
Lumiel provides rewiring services for homes across Sutton, South London and Surrey. This guide covers the warning signs worth acting on, what a rewire involves, and how we work.
Warning Signs Your Home Needs Rewiring
If you notice any of the following, book an assessment with a certified electrician.
Frequent Electrical Faults. Flickering lights, sockets that work intermittently, or power surges. The odd fault happens in any home. A pattern of them suggests the wiring can no longer handle the load placed on it.
Old Wiring Types. Rubber-insulated cable was fitted in UK homes into the 1960s and lead-sheathed cable earlier still. Rubber goes brittle and cracks with age, and neither type belongs in a modern installation. Electrical Safety First advises that electrics more than fifty years old should be checked and updated, which in practice means anything wired before the mid-1970s. If you are unsure what is behind your walls, an electrician can inspect and tell you.
Frequent Tripping. Circuit breakers exist to trip, so an occasional trip is not a crisis. Repeated tripping across multiple circuits points to an installation that is struggling, often after new appliances have been added to a system never designed for them.
Burning Smells or Scorch Marks. Around sockets, switches or the fuse board, these indicate overheating or a fault. Contact an electrician straight away.
Discoloured or Damaged Sockets and Switches. Cracking, browning around the edges or heat damage on an accessory is a visible symptom of a problem you cannot see. Have it inspected.
Any of these apply to your home? Book a safety inspection with Lumiel. Our electricians will assess the installation and tell you plainly whether a rewire is needed, or whether targeted remedial work will do the job.
What a Rewire Involves?
We follow the same process on every rewire, so you know what is happening at each stage.
Inspection. We assess the condition of your existing wiring, test the installation, identify risks and establish the scope of the work. Nothing is quoted before we have looked properly.
Fixed price quote. You receive a written quote covering labour, materials and certification. No hidden fees, and the price does not move unless you change the scope.
Installation. We remove the old wiring and install new cable that meets current standards. In most cases this includes upgrading the consumer unit to a modern RCD-protected board, so the whole installation is brought up to the same standard.
Testing and certification. The installation is tested on completion and you receive an Electrical Installation Certificate confirming the work meets BS 7671. A rewire is notifiable work under Part P of the Building Regulations, so a Building Regulations Compliance Certificate follows as well.
How Lumiel Works Around You
A rewire touches every room, and we plan the job around the household rather than the other way round.
We agree the schedule with you before we start and tell you which areas we are working in each day. Our electricians work neatly, protect the areas they work in, and clear up behind them.
You will know what is happening and who is in your home at every stage. If something changes as the work progresses, you hear it from us first, before any decision is made.
Why Homeowners in Sutton and South London Choose Lumiel for Rewires
A rewire is one of the largest pieces of work a home undergoes, and it is worth knowing who is doing it.
Lumiel is an NICEIC-approved contractor. Every rewire we carry out is completed to the 18th Edition Wiring Regulations, tested on completion and fully certified, which is the paperwork you need if you sell, let or insure the property later. We are fully insured, including public liability cover.
We are local. Our electricians work across Sutton, South London and Surrey, in the same housing stock day after day, which means the quirks of a 1930s semi or a converted Victorian terrace are familiar rather than a surprise on day one.
Book a Rewiring Assessment
If the signs above sound familiar, the next step is an inspection. Lumiel will test your existing installation, tell you what condition it is in, and give you a fixed price for the work if a rewire is needed.
Call Lumiel to book a rewiring assessment in Sutton, South London or Surrey.
Frequently Asked Questions
Frequent electrical faults, old wiring types, repeated tripping, burning smells and discoloured sockets or switches are the common indicators. A certified electrician can inspect and test your installation and confirm whether a rewire is needed. Condition matters more than age, so a tested installation in good order does not need replacing simply because it is old. That said, if your home has not been rewired in fifty years, have it checked.
In most cases, yes. A rewire is usually carried out alongside an upgrade to a modern RCD-protected consumer unit, so the whole installation meets the same standard. We confirm what is included in your quote before the work begins.
Yes. Every Lumiel rewire is tested on completion and issued with an Electrical Installation Certificate, followed by a Building Regulations Compliance Certificate for the notifiable work. Keep both, as a buyer’s solicitor will look for them when you sell.

