How Long Does It Take to Rewire a House

Rewiring a house is one of the most important electrical upgrades a homeowner can undertake. While the decision to rewire is often driven by safety concerns or the need to bring a property in line with modern standards, one of the most common questions people ask is how long the process will take. Timescales can vary widely depending on the size of the property, the scope of the work, and whether the house is occupied, but understanding the typical duration and what affects it can help you prepare properly for the project.

Why Rewiring Is Necessary

Electrical installations in the UK are not designed to last indefinitely. Most systems should be reviewed after 25 to 30 years, as insulation deteriorates, connections loosen, and regulations change over time. Older wiring materials such as rubber or fabric sheathing are no longer considered safe, and consumer units without modern circuit breakers or residual current devices may not provide adequate protection against electric shock. Rewiring ensures that your home meets current BS7671 wiring regulations and Part P of the Building Regulations.

Average Timescales for a Full Rewire

For a typical two or three bedroom house, a full rewire usually takes between one and two weeks. Smaller flats or bungalows may take less time, sometimes as little as five to seven days, while larger detached properties with more rooms, additional floors, or complex layouts can take three weeks or longer. The presence of difficult to access areas, such as solid concrete floors or ceilings, will also extend the duration.

The timescale is divided into two main stages. The first fix involves running new cables, fitting back boxes for sockets and switches, and preparing for new circuits. This is the most disruptive stage, as it requires chasing into walls and lifting floorboards. The second fix takes place once the wiring is in place and includes connecting sockets, switches, light fittings, and the consumer unit. The installation is then tested to ensure compliance with BS7671 before certification is issued.

Factors That Influence Duration

Several factors affect how long it takes to rewire a house. The size and type of property are the most obvious. A compact flat with straightforward access to floor voids will be much quicker to rewire than a large period property with thick walls and limited access routes. Whether the property is occupied also has a major influence. An empty house allows electricians to work more quickly and efficiently, whereas a lived in property requires careful planning to keep certain areas habitable, which extends the timescale.

The extent of the work is another consideration. If the rewire involves only replacing existing wiring and fittings, the job will be faster than one that includes additional sockets, smart technology, or data cabling. The number of electricians working on site can also affect duration. A team of two or three may complete a standard house rewire in just over a week, while a single electrician may take considerably longer.

Disruption During the Process

While the main concern for most homeowners is how long a rewire will take, it is important to remember that the process is disruptive. Dust, noise, and temporary power loss are unavoidable. In many cases, it may be more convenient to move out for the duration of the project, particularly during the first fix stage when walls are being cut and floors lifted. For those staying in the property, electricians may rewire in phases, completing one section at a time so that some areas remain usable, but this approach increases the length of the job.

Planning to Reduce Timescales

Preparation can make a significant difference to how long a rewire takes. Removing furniture and lifting carpets before the electricians arrive can save time and allow them to start work immediately. Deciding in advance where you want sockets, switches, and lighting positioned avoids delays caused by last minute changes. If possible, carrying out a rewire before redecorating or moving into a property is the most efficient approach, as there is no need to work around occupants or worry about damage to new finishes.

Partial Rewires and Alternatives

Not every property needs a full rewire. Sometimes only certain circuits or rooms require upgrading, particularly if an Electrical Installation Condition Report shows that most of the wiring is in acceptable condition. A partial rewire takes much less time, often just a few days, and is less disruptive than a full project. Another alternative is upgrading the consumer unit. While this is not a substitute for replacing unsafe wiring, it can improve safety if the existing cabling is still in good condition.

Certification and Final Testing

At the end of the rewire, electricians carry out a full programme of inspection and testing to ensure the installation complies with BS7671. The duration of this testing phase depends on the size of the property but is usually completed within a day. Homeowners are then issued with certification to confirm that the installation meets current regulations, which is essential for future property sales and insurance purposes.

Final Thoughts

Rewiring a house is a major project that can take from a week to several weeks depending on the property and scope of work. While the process is disruptive, the long term benefits far outweigh the temporary inconvenience. A modern rewire improves safety, increases the number of sockets and circuits to meet current lifestyle needs, and ensures compliance with UK regulations. By planning carefully and working with a qualified electrician, the timescale can be managed efficiently, leaving you with a safe and reliable electrical system for years to come.