How many light sources does a room need?

At least three light sources, on separate switches. A single ceiling light flattens a room because every surface receives the same flat wash from the same angle. Designers layer light instead: ambient for overall level, task for what you are doing, and accent for the things worth looking at.

The three layers

Ambient light is the base level: downlights, a pendant, or light bounced off a ceiling. It should be dimmable and it should not be the only thing on at night.

Task light is aimed at what you are doing: under-cabinet strips at a bench, a reading lamp beside a chair, mirror lighting at a vanity that hits the face from both sides rather than from directly above.

Accent light is what makes a room feel considered. A wall washer on art, a strip inside a shelf, an uplight through a plant. It carries very little of the total light and almost all of the atmosphere.

Why it must be planned before walls close

Lighting is the layer most often left to the electrician, and it is the one that is hardest to fix afterwards. Switch positions, circuit grouping, dimmer types and cable runs all need deciding before the plasterboard goes up. Adding a wall light later means opening a wall.

Colour temperature and dimming

Keep residential lighting warm, around 2700K, and keep it consistent within a room. Mixing warm and cool in one space reads as a mistake even when people cannot name it. Check that the dimming system and the fittings actually agree. A lot of LED flicker comes from a mismatch between driver and dimmer, and the lamp gets the blame.

A quick test

Stand in the room at night and turn on only the ceiling light. If the corners are dark, the ceiling is the brightest surface and faces look tired, the room needs its other two layers.

Lighting is planned as part of interior architecture, and the homes in the interior designer Gold Coast guide show what that looks like once it is built in.