Adding Sockets Without Damaging Your Walls or Your Wiring

Why extension leads are rarely a good long-term fix

An extension lead can be useful temporarily, but it is not a proper substitute for enough fixed sockets. In older homes, one double socket often ends up serving a television, router, lamps, chargers, office equipment and kitchen appliances all at once.

That creates avoidable risks. Plugs and adaptors can overheat, leads get trapped behind furniture, and cables across floors become a trip hazard. In flat conversions and smaller rooms, where space is tighter, those problems show up quickly.

If you regularly rely on daisy-chained extensions, have plugs that feel warm, or find yourself unplugging one item to use another, it is usually time to look at adding sockets properly.

How sockets should be added properly

A proper job starts with understanding the existing circuit, not with opening up the wall straight away. The electrician needs to check how the current sockets are supplied, whether the circuit has capacity for the addition, and whether the earthing and protective devices are suitable.

In practice, an extra socket may be added as part of an existing ring or radial circuit, or a new cable run may be the safer option. Which approach is right depends on the layout, the age of the installation and what you plan to use in that room.

This is especially important in London and Surrey housing stock, where alterations over the years may have left mixed cable ages, undocumented changes or awkward routes through solid walls, floor voids and later extensions. A tidy finish matters, but the first priority is always that the wiring arrangement itself is correct.

• Check whether the existing circuit is suitable for an additional socket
• Confirm cable routes and likely access points before work begins
• Choose the socket position based on actual use, not just the easiest wall to reach
• Allow for testing once the work is complete

Surface-mounted or chased into the wall

There are usually two main ways to install additional sockets. One is a surface-mounted finish, where cable is run in trunking or surface conduit and the socket box sits on the wall. The other is a chased-in finish, where channels are cut into the plaster or masonry so the cable and box can be recessed.

Surface-mounted work is often quicker, less disruptive and a sensible choice in utility areas, garages, cupboards, cellars and some rental properties. It can also be the better option where walls are difficult to chase neatly, such as some solid masonry walls in older houses.

Chased-in sockets usually give the cleaner look people want in living rooms and bedrooms, but they involve more making good afterwards. In period homes and conversions, wall construction can vary even within one room, so a route that looks simple on paper may be more involved once the wall is opened.

• Surface-mounted is often best where practicality matters more than appearance
• Chased-in is usually preferred in finished living spaces
• Solid walls, old plaster and previous repairs can increase disruption
• If you are redecorating anyway, chased-in work is often easier to plan around

What the work typically involves in each room

In a living room or bedroom, the main issues are usually furniture layout, wall finish and cable routes. Floor voids can sometimes make access easier in houses, while flats may have more limitations depending on the structure and what is above or below.

In a home office, it is worth planning for actual demand rather than adding a single extra outlet. Computers, monitors, printers, routers and chargers can quickly fill a double socket, so sensible positioning matters as much as the number of outlets.

Kitchens need more caution because portable high-load appliances are common and wall space is often limited. You should avoid assuming that a convenient nearby socket can simply be extended without checking what else is already on that circuit.

Hallways, landings and converted loft spaces often present access issues rather than heavy demand. In those areas, the quality of the route and finish usually matters most, particularly in narrow terraced properties where visible trunking may feel intrusive.

• Living rooms: place sockets where furniture will actually sit
• Bedrooms: think about bedside charging, lamps and future furniture changes
• Home offices: allow for more outlets than you currently use
• Kitchens: be careful with appliance loads and limited wall space
• Lofts and conversions: expect access and routing to need more thought

What you can check yourself and when to call a professional

As a homeowner, you can do useful preparation before any electrical work starts. Note which sockets are already overloaded, where extension leads are in regular use, and where furniture or appliances force awkward cable runs. You can also clear access, move fragile items and decide whether you want a surface-mounted or chased-in finish in each area.

You should not try to add sockets yourself unless you are properly qualified and sure of the circuit design. The risk is not just getting a poor cosmetic result. Incorrect spurs, loose terminations, damaged cables and unsuitable additions to existing circuits can all create faults that are hidden until they become dangerous.

Call a professional if sockets are discoloured, crackle, feel warm, trip the power, or stop working intermittently. The same applies if you live in an older property with uncertain wiring history, or a flat conversion where previous alterations may not be obvious. CS Services can advise on planned electrical work and enquiries are welcome ahead of launch, which is useful if you are planning room upgrades or trying to reduce reliance on extension leads.

Frequently Asked Questions