If you are planning a renovation, buying an older property or dealing with persistent electrical faults, one question usually comes first: how long does rewiring take? For most homes, a full rewire takes around five to 10 working days. Larger, older or occupied properties can take longer, while a focused partial rewire may be completed in one to three days.
The honest answer depends on the building, the condition of its existing wiring and what needs to be upgraded at the same time. Rewiring is not simply replacing cables. It is a safety-critical project that may involve new circuits, a switchboard upgrade, extra power points, lighting, smoke alarms, testing and certification. Good planning keeps the work moving and helps avoid unnecessary disruption.
How long does rewiring take for different properties?
A small unit or townhouse with accessible ceilings and underfloor space may be rewired in three to five days. A standard three-bedroom home commonly takes five to 10 working days, particularly if the electrician needs to install a new switchboard, modern safety switches and additional outlets.
A large family home, heritage property or commercial space may take two weeks or more. Solid brick walls, plaster ceilings, restricted roof access and previous renovations can all slow the process. In some cases, wiring has been added in stages over decades, so the first task is identifying which cables are still live and which circuits serve each area.
For a partial rewire, the timeline is shorter. Replacing unsafe wiring in a kitchen, adding circuits for an extension or upgrading wiring to support an EV charger may take one to three days. The work is still carefully tested, but there is less cable to run and fewer rooms to make good afterwards.
What affects a rewiring timeline?
Every property has its own practical challenges. A licensed electrician should inspect the site before committing to a schedule, rather than offering a one-size-fits-all timeframe over the phone.
The biggest factor is access. Cables can be installed more efficiently where there is clear roof space, a subfloor or open wall framing during a renovation. In a finished home with concrete floors, tight roof cavities or masonry walls, electricians may need to carefully lift flooring, access cavities through small openings or coordinate with other trades.
The age and layout of the property also matter. Older homes may contain obsolete wiring, such as rubber-insulated cable, or circuits that do not meet current safety expectations. If the existing switchboard is outdated, upgrading it alongside the rewire is often the sensible option. It adds work upfront, but provides suitable protection for the new installation and capacity for modern household demand.
Your scope of work can change the schedule too. A basic replacement of existing circuits is different from redesigning the electrical layout. Adding kitchen appliance circuits, data cabling, outdoor lighting, security cameras, air conditioning supplies or EV charging can be efficiently planned into the same project, but each addition requires time, materials and testing.
Finally, the condition of the site makes a difference. A vacant property is generally quicker to rewire than a home that remains occupied. Furniture, pets, children and daily routines all need to be managed safely and respectfully. An experienced electrician will work in stages where possible, restoring power to completed areas and clearly communicating any planned outages.
What happens during a full house rewire?
A professional rewire starts with an inspection and a clear quotation. This is the time to discuss concerns such as flickering lights, tripping circuits, too few power points or plans for future appliances. The electrician will assess the switchboard, identify likely cable routes and explain what access is required.
Once work begins, the team isolates and removes or disconnects old wiring where appropriate. New cables are then run from the switchboard to lights, switches, power points, fixed appliances and safety equipment. This rough-in stage can involve controlled access to walls and ceilings, particularly where there is no roof or underfloor entry.
After cables are in place, fittings and accessories are installed. Depending on the project, this can include LED downlights, new switches and outlets, hardwired smoke alarms, exhaust fans and surge protection. The switchboard may also be replaced or upgraded with safety switches and clearly labelled circuits.
The final stage is not a quick visual check. Each circuit is tested to confirm polarity, earthing, insulation resistance and correct operation of safety devices. The electrician then provides the required electrical safety documentation for the completed work. This testing is one reason a proper rewire should never be rushed.
Will you need to move out while the house is rewired?
Not always, but it is worth considering for a full rewire. If electricians are working through most rooms, there may be periods without power, lighting or access to parts of the home. Dust, temporary floor coverings and small wall or ceiling openings can also make normal routines difficult.
For a small or staged project, many households remain at home. Electricians can often schedule work room by room and retain temporary power where it is safe to do so. However, this approach may extend the overall programme because access needs to be coordinated around the occupants.
Moving out temporarily can make sense when the property is vacant before settlement, between tenants or already under renovation. It gives the team open access, can reduce labour time and lets plastering and painting repairs follow promptly. The best choice comes down to your budget, household needs and the extent of the work.
How to prepare your home or business for rewiring
Preparation helps the job run on time and protects your belongings. Before the start date, confirm which rooms will be worked on first and ask about expected power interruptions. If you work from home, make arrangements for internet, refrigeration, medical equipment or any other essential services during planned outages.
Clear furniture, artwork and fragile items away from walls where practical. Provide access to the switchboard, roof space, subfloor and relevant rooms. For businesses, let staff know about restricted work areas and coordinate the timing around customers, trading hours and critical equipment.
It is also a good time to make decisions before cables are installed. Think about where you charge devices, how you use kitchen benches, whether outdoor areas need lighting and whether future needs such as solar, an EV charger or security equipment should be allowed for. Installing suitable circuits during a rewire is usually more cost-effective than opening up finished walls later.
Is a faster rewire always better?
A prompt, well-organised project is valuable, but speed should not come at the expense of safety or finish quality. Cutting corners on cable routing, circuit testing or switchboard work creates risks that may only become apparent after the walls have been repaired and painted.
The right electrician will provide a realistic timeframe, explain what could affect it and keep you updated if hidden issues are uncovered. Transparent communication matters just as much as technical skill. You should know when power will be off, what work has been completed and what remains before the property is handed back.
If your wiring is showing its age, plan the project before a fault turns into an urgent disruption. A thorough on-site assessment gives you a clear scope, a practical schedule and the confidence that your home or business is ready for safer, more reliable electrical use.