How Many Downlights Do I Need? Spacing, Layout and Why Fewer Often Looks Better
There's no single right number. As a starting point on a standard 2.4 m ceiling, space downlights roughly 1.2 to 1.8 m apart and about half that distance from the walls, then adjust for the fitting's beam and the room's use. Many rooms look better with fewer downlights placed where you need light, plus cove, wall or joinery lighting.
The quick answer
These ranges assume a 2.4 m ceiling, good-quality LED downlights and downlights as the main light source. Where cove, wall or joinery lighting does some of the work, use fewer.
| Room | Typical size | Downlights (starting point) | Notes |
|---|---|---|---|
| Bedroom | 3.5 x 3.5 m | 4 to 6 | Keep them off the bed; add bedside lights |
| Living room | 5 x 4.5 m | 6 to 9 | Place near walls and art rather than in the middle |
| Kitchen | 4 x 4 m | 4 to 8 | Over the front edge of benches; add under-cabinet strip |
| Hallway | 1.2 x 6 m | 3 to 4 | One every 1.5 to 2 m, or wall lights instead |
| Ensuite | 2.5 x 3 m | 2 to 4 | Clear of the shower zone rules; add mirror lighting |
A rough rule for rooms lit mainly by downlights is one per 2 to 3 square metres. Treat it as a ceiling, not a target.
Why a grid of downlights looks flat
Builders' electrical plans often show downlights in a neat grid across every ceiling. It's easy to draw and easy to price, but it tends to produce:
- A "Swiss cheese" ceiling full of holes
- Glare from bright sources directly overhead
- Bright floors and dark walls, which makes rooms feel smaller
- Flat light with no focus or mood
- More energy use than the room needs
How to place downlights properly
- Light the walls and work surfaces, not the middle of the floor. Walls reflect light back into the room and make it feel bigger.
- Align with the architecture. Line downlights up with joinery, windows, benches and doorways so the ceiling looks ordered.
- Keep them out of the way of glare. Not directly above beds, sofas, the TV or the dining chairs.
- Use them for jobs. A downlight over the front edge of a benchtop, above a reading chair or aimed at artwork is doing work. One in the middle of a bedroom ceiling usually isn't.
Spacing rules of thumb
Spacing depends on three things: ceiling height, the beam angle of the fitting and how much light you want.
- Ceiling height. Higher ceilings let each beam spread further, so fittings can be further apart.
- Beam angle. Narrow beams (under about 40 degrees) need closer spacing or are best used for accent; wide beams (60 degrees or more) spread further.
- Distance from walls. About half the spacing between fittings is a common start. To wash a wall evenly, bring the fittings closer to it and use gimbals to aim them.
Planning a build or renovation?
Luxe designs and installs architectural lighting across the Sunshine Coast and Brisbane. Book a lighting consultation.
Choosing the fitting
| Type | Look | Best for |
|---|---|---|
| Standard fixed downlight | A visible trim ring | General ambient light, budget-conscious projects |
| Gimbal (adjustable) | Trim ring, aimable beam | Wall washing, art, sloped ceilings, benchtops |
| Trimless or plaster-in | No visible rim, just a clean hole of light | Minimal, architectural interiors; set during plastering |
| Deep-recessed low-glare | Light source sits well back from the ceiling | Living rooms and bedrooms where comfort matters |
| Black or coloured trims | Trim matches a dark ceiling | Dark or timber ceilings |
Whatever the style, choose high colour rendering (CRI 90+) and one colour temperature throughout (see warm white vs cool white).
Energy rules
The National Construction Code limits the lighting power in new homes to 4 W/m² of lit internal floor area (NCC 2022 Part H6). Efficient LEDs make this easy to meet in a well-designed scheme. A downlight grid in every room is one of the quickest ways to push towards the limit, and another reason to design rather than fill.
Reviewing your builder's electrical plan
Before you sign off the electrical plan, check:
- Is every downlight doing a job, or filling a grid?
- Are downlights clear of beds, sofas, the TV and the dining table?
- Do kitchen downlights sit over the bench edges?
- Are walls, art and joinery lit?
- Are there other light sources: cove, wall lights, strip, lamps?
- Is everything dimmable where it should be?
- Is one colour temperature and CRI specified for all fittings?
Our guide on how to plan lighting for a new home walks through the full process, and our guide to cove, bulkhead and shadow-line lighting covers the most common alternative to extra downlights. For help with your plan, see our residential LED lighting, hidden and recessed LED lighting and architectural lighting in Buderim pages.
Frequently asked questions
How many downlights do I need in a room?
It depends on the room size, ceiling height, the fittings' beam angle and brightness, and what else lights the room. As a rough start on a 2.4 m ceiling, allow one downlight per 2 to 3 square metres where downlights are the main light, and fewer where cove, wall or joinery lighting does some of the work.
How far apart should downlights be?
A common starting point on a 2.4 m ceiling is 1.2 to 1.8 metres apart, and about half that distance from walls. Narrow beams need closer spacing; wide beams can go further apart. Always check the layout against the fitting's beam angle and where you actually need light.
Are too many downlights a bad thing?
Yes. A dense grid makes ceilings look busy, throws glare, lights the floor more than the walls, and uses more energy. Rooms usually look better with fewer, well-placed downlights combined with other light sources.
What are trimless downlights?
Trimless downlights are plastered into the ceiling so there's no visible rim, leaving only a clean hole of light. They look minimal and architectural but need to be installed before or during plastering, which makes them best suited to new builds and full renovations.
Are gimbal downlights worth it?
Yes, where you want to aim light at a wall, artwork, joinery or a benchtop. Gimbal (adjustable) downlights let the beam be tilted, which makes them useful for wall washing and accent lighting, and for sloped ceilings.
Get your free lighting quote.
Call 0411 212 528 or request your consultation. Licensed electrical contractor #90549.
