Bathroom socket rules: where they can and cannot go

Why water and electricity split the bathroom into zones

Water conducts electricity, and a bathroom produces water in ways other rooms do not: splashing from a shower, condensation on tiles, steam settling on a mirror. The closer a socket sits to a shower head, bath rim or basin, the higher the chance that moisture reaches it, either directly or as vapour working its way into the fitting over time.

The practical response is to think of the bathroom in rings around each water source. Right next to the bath or shower, nothing electrical belongs at all. A bit further out, fixed and well-protected fittings are acceptable. Further still, close to ordinary room conditions, standard sockets are fine. This is the same logic an electrician applies whether the bathroom is a Soviet-era panel flat with a shower over the bath or a new-build with a separate walk-in shower.

Where a socket usually cannot go

The area directly around and above a bath or shower is off-limits for sockets, switches and most fixed electrical equipment. This includes the wall directly behind the shower, the space above the bath where someone might reach up with wet hands, and anywhere water could pool or splash during normal use.

It is not only about the socket itself. Cabling running through those zones under the plaster also needs to follow safe routes, which is one reason retrofitting a socket in an old bathroom sometimes means opening more wall than expected. A renovation is the easiest moment to get this right, because the walls are already open.

• No sockets on the wall directly behind or beside a shower cubicle
• No sockets within reach of someone standing in the bath
• Avoid low placements near a basin where splashing is likely
• Keep floor-level sockets away from areas that get mopped or flooded
• Cabling inside splash zones should be planned, not routed by habit

What makes a socket further from the water safe

Away from the direct splash zone, a socket can be installed safely provided it uses the right protective fittings. The main one is a residual current device, which cuts the power the instant it detects current leaking somewhere it should not, such as through a person or a patch of damp wall. In a bathroom circuit this is standard practice, not an optional extra.

Fittings rated for damp conditions, sometimes with a splash-proof cover or flap, add a second layer of protection for sockets that sit in a zone where occasional moisture is possible but direct splashing is not, for example next to a washing machine. Together, correct distance from water, the right fitting, and a residual current device are what make a socket in that middle zone acceptable rather than risky.

What you can decide yourself and what you cannot

You can reasonably decide where you would like appliances to sit: a washing machine in a corner, a hairdryer socket near the mirror, a shaver point by the basin. Sketching out furniture and appliance positions before the electrician arrives saves time and means the quote reflects what you actually want.

What you should not do yourself is decide exact socket placement relative to the shower or bath, or wire anything into the bathroom circuit. The margins that make a placement safe are not always obvious from eye, especially in older buildings where the shower position or plumbing has been altered over the years. This is where a professional assessment of the specific room, not a general rule of thumb, matters.

When to call an electrician and roughly what it costs

Any change to socket positions during a bathroom renovation is worth having a qualified electrician review, ideally before tiling starts, since moving a socket afterwards means breaking tiles to get at the wall. Electrical work is charged from 49 € per hour, and a straightforward socket installation, once the layout is agreed, starts from 35 € per job.

If the bathroom renovation covers more than sockets, a full bathroom renovation including the electrical layout, waterproofing and finishing is quoted as one job, from 3500 €. For a rented flat, check with the landlord or apartment association before altering wiring, since changes to shared risers or the building's electrical system may need their sign-off.