How to Light a Stairwell Safely With Wall Lights

Quick answer

Light a stairwell safely by placing wall lights at each landing and every 3–4 steps, mounting them at least 1.8 metres above the tread nosing, and choosing warm (2700K–3000K) bulbs with a diffuser to reduce glare. Add a two-way switch at the top and bottom so no one walks a dark staircase to find a light.

Start with a lighting plan, not a fixture

Walk your staircase at night with the existing lights off and note where shadows fall. Mark the top and bottom landings, then count the steps between them. A safe plan puts a light source near each landing and repeats a fixture every 3–4 steps along the flight. On a straight run of 12 steps, that usually means two wall lights plus a ceiling or pendant light at the top landing. On a dog-leg or L-shaped stair, treat each flight separately and add a light at the turn.

Check what is behind the wall before you commit. Stairwell walls often hide structural timbers or pipes, so use a detector or ask an electrician to confirm a clear cable route. If you rent or cannot chase cables, battery-powered wall lights with a remote switch are a practical fallback.

Mount wall lights high and slightly ahead of the tread

Position wall lights so the light falls on the treads rather than into your eyes. A good rule is to mount the fixture at least 1.8 metres above the tread nosing and offset it 30–45 centimetres horizontally from the step edge. This throws light down the flight and reduces the chance of a bulb sitting at eye level when you climb.

Keep fixtures clear of the handrail and any door swing. If the staircase is narrow, use a slim wall light rather than a deep shade that can be knocked. A directional or downward-facing wall light is safer than an exposed bulb that spills light sideways.

Choose bulbs that flatter timber and cut glare

Stairwell lighting works best with warm white bulbs in the 2700K–3000K range. Cool white light can make wood look grey and harsh, while very warm light can be too dim on the treads. Aim for 300–400 lumens per fixture on a typical domestic staircase, and use a dimmer if the stair is also used at night.

Glare is the main safety risk with wall lights on stairs. Pick a fixture with a diffuser, frosted glass, or a shade that hides the bulb from the side. If you already have exposed-bulb fittings, swap to a silvered or opal bulb, or add a shield. For more on this, see our guide to reducing glare from wall lights.

Wire for two-way switching and keep it simple

A stairwell light that only switches on at the bottom is a trip hazard. Ask your electrician to wire the circuit for two-way switching, with a switch at the bottom and top of the stairs. If you are adding wall lights to an existing circuit, check the load and use a qualified electrician to avoid overloading.

Keep the control simple. A single switch by each landing is easier to find in the dark than a bank of dimmers. If you want a night-time low level, use a dimmer with a preset or a separate low-output wall light rather than relying on memory.

Step-by-step: lighting a stairwell safely

1. Map the stair and mark landing points: Walk the staircase at night and mark the top and bottom landings and any turn. Count the steps between them so you know how many fixtures you need. Checkpoint: if you cannot see the tread nosing from the top step, you need another light source.
2. Set the mounting height and offset: Mark each wall light at least 1.8 metres above the tread nosing and 30–45 centimetres horizontally from the step edge, clear of the handrail. Common mistake: mounting too low, so the bulb sits at eye level and causes glare.
3. Choose warm, diffused bulbs: Use 2700K–3000K bulbs at roughly 300–400 lumens per fixture, with a diffuser or shade that hides the bulb from the side. Checkpoint: stand at the bottom and look up; if you can see the bare filament directly, add a shield or change the bulb.
4. Wire for two-way switching: Have an electrician wire the stairwell lights so they can be switched on and off at both the top and bottom of the stairs. Common mistake: a single switch at the bottom only, which leaves the top landing dark.
5. Test the finished lighting at night: Turn off all other lights and walk the stairs slowly. Check for shadows on the treads, glare at eye level, and any step that still looks dark. Next step: adjust the angle or add one more fixture at the darkest step rather than increasing bulb wattage everywhere.

Wooden wall lights that suit stairwells

• Hanter Wall Light: The Hanter Wall Light is a steam-bent solid oak arc with an exposed filament bulb and a brass fitting, handcrafted in sustainably sourced oak. Its slim, curved profile projects less into the stairwell than a boxy shade, and the exposed bulb gives a warm, downward glow that can work on a landing if you choose a low-glare bulb.
• Leven Pendant Small: The Leven Pendant Small is a tiered drum pendant handcrafted from three tiers of curving oak or walnut timber on a plywood frame, inspired by Cornish cliff formations. A pendant like this can light an open stairwell from above, but it needs enough headroom and a ceiling point; use it as the top-landing light rather than a wall light on the flight.