Existing-installation assessment
Supply, consumer unit, earthing, circuit condition and accessible routes are reviewed.
Alesta · Electrical rewiring in London
Rewiring planned around the property.
Carefully scoped circuit and whole-home rewiring, with routes, access, protection, testing and reinstatement responsibilities agreed before work begins.
☎ Call 020 3608 3976Survey before cable routes
A rewire is a property project, not only an electrical task.
New cables must reach sockets, lighting points and fixed equipment through an existing building. The installation condition, room layout, desired outlets, floor and ceiling access, occupied areas and decorating programme all affect the safest and least disruptive plan.
We define whether the need is a single circuit, a partial upgrade or a full rewire. Testing and survey findings guide that scope; age alone does not prove that every cable must be replaced, while visible modern accessories do not confirm the concealed wiring is suitable.
Point and circuit schedule
Sockets, lights, appliances and specialist loads are mapped before work starts.
Cable route planning
Floor, ceiling, chase and service routes are coordinated with access and finishes.
Testing and certification
New work is inspected, tested and documented to the applicable scope.
Common reasons customers call
When the existing wiring no longer suits the home.
Testing identifies widespread defects
Insulation, earthing or circuit arrangements show that local patching will not provide a sound result.
A renovation changes the layout
New kitchens, extensions or room uses need circuits and outlet positions planned together.
The property has too few usable points
Extension leads and overloaded arrangements reveal a need for a safer permanent design.
Old alterations are inconsistent
Multiple generations of undocumented work make isolation, testing and future maintenance difficult.
Why Alesta for rewiring
A coordinated plan for wiring and finishes.
Scope comes from evidence
Survey findings and intended use define whether work is local, partial or property-wide.
Routes are discussed
Access through floors, walls and ceilings is planned before chasing or lifting begins.
Occupied homes are considered
Phasing, temporary power, dust and room access are addressed in the programme.
Testing closes the work
Circuits are identified, inspected, tested and documented before handover.
A planned installation
How we carry out electrical rewiring.
Rewiring starts with the property and the intended result. We review available inspection information, current circuit arrangements, the rooms being altered and the number and position of required points. High-load equipment, smoke alarms, data, exterior supplies and future plans are considered early. In older London properties, construction type, listed details, shared access and restricted floor voids can materially affect the route and programme.
The electrician develops a circuit and point schedule, then confirms where cables can run. This may involve floorboards, ceiling voids, surface routes or chases. The scope states who moves furniture, lifts finishes, opens access and completes plastering or decoration. Occupied homes may need phases so essential power can be restored between visits, but temporary arrangements must remain safe and cannot always preserve every room in use.
During installation, the relevant supply is isolated and work areas are protected. Old circuits are disconnected in a controlled sequence and new cables, boxes and accessories are installed to the agreed design. Cable zones, support, mechanical protection and separation from other services are considered throughout. Any concealed defect or blocked route that changes the plan is shown before extra opening-up or material is authorised.
Each new circuit is inspected and tested before energisation. The consumer unit schedule and accessory identification are updated, and required certification is prepared for the completed scope. The electrician explains any excluded legacy circuit, outstanding building repair and limitation caused by inaccessible areas. A successful rewire is not simply new cable: it is an installation that matches present use, can be isolated clearly and leaves future electricians with reliable information.
Clear pricing
Electrical rewiring prices.
The total depends on property size, point schedule, access routes, occupation, consumer-unit work and reinstatement responsibilities.
| Service scope | Price | What affects the final price |
|---|---|---|
| Defined circuit rewire | From £500 | Circuit length, points, route, access and making good |
| Partial property rewire | Quoted after survey | Rooms, retained circuits, phasing, access and testing |
| Whole-property rewire | From £3,000 | Property size, point count, specification, occupation and finishes |
Pricing context: Existing audited electrical data includes smaller rewiring scopes from several hundred pounds and whole-home projects from around £3,000. A survey and written specification are required for a reliable quote.
How the service works
From survey to tested new circuits.
Survey the installation and plans
We review circuit condition, room use, desired points and access constraints.
Agree routes, phases and finishes
The schedule defines openings, protection, power interruptions and making good.
Install, test and document
New circuits are completed, identified, tested and handed over with the applicable records.
Electrical rewiring FAQ
Before the rewiring project begins.
Useful answers about surveys, occupation, disruption, finishes and certification.
☎ Call 020 3608 3976How do I know whether the whole property needs rewiring?
Inspection and testing should determine the condition and suitability of circuits. Age or old-looking accessories alone are not enough to define a full rewire.
Can we remain in the property during the work?
Sometimes, with careful phasing, but rooms may be unavailable and power will be interrupted. The property layout, family needs and project size determine whether occupation is practical.
Does rewiring include plastering and decorating?
Only when listed. Electrical work often requires access holes or chases; the scope must state who is responsible for making good and final decoration.
Can existing sockets or circuits be retained?
They may be retained if inspection, testing, design and compatibility support it. The electrician will identify what can remain and any limitation.
How long does a rewire take?
It depends on property size, point count, access, occupation and other trades. A phased flat differs greatly from an empty multi-storey house.
Will the new installation be certified?
Applicable inspection, testing and certification are provided for the completed electrical scope, with any notification requirements handled as agreed.
What affects the final price?
Property size, number of circuits and points, cable routes, consumer-unit work, access, occupation, specification and making good all affect the quote.