Lighting is the least noticed and most felt design decision in a house. The same room looks cold and flat under the wrong light, warm and deep under the right one. Architect Kerem Yücel's time in lighting design at Tillotson Design Associates in New York left him with the habit of treating light as a material. This guide gathers the principles that help when planning the lighting of a home.
Think of light in layers
A well-lit room is made not of one source but of layers that complement each other:
- Ambient light: soft, even light for moving comfortably through the whole space.
- Task light: directed light where work happens, such as the kitchen counter, a desk or a reading chair.
- Accent light: light that brings out a wall texture, an artwork or an architectural detail.
- Decorative light: pendants and wall lights that are objects in their own right.
Putting the layers on separate, dimmable circuits lets the same room hold different moods for the morning, the evening and for guests.
Choose the right colour temperature
The colour of light is measured in Kelvin (K). In living spaces, warm white between 2700K and 3000K keeps a sense of home. Higher values can suit workspaces or technical rooms. Keeping one colour temperature throughout a house avoids jarring changes between rooms.
Mind colour rendering (CRI)
CRI describes how faithfully light shows colours. Under a low-CRI LED, timber looks grey and skin looks pale. In homes, fittings with a CRI of 90 or above keep materials true to their colour.
Show the light, not the source
A bright source shining straight into the eye causes glare and makes a space tiring. Deeply recessed downlights, concealed LED strips and indirect light washing a wall bring out the effect of light rather than the fitting. Instead of filling the ceiling with dots, decide which surfaces the light should fall on.
Design with daylight
Artificial light starts where daylight ends. The orientation of windows, the depth of overhangs and the colour of interior surfaces decide how much artificial light you need during the day. Light ceilings and walls spread light; dark surfaces need more fittings.
Plan lighting from the start
The most common mistake is leaving lighting to the end of construction. By then the cables are in, ceiling levels are fixed and the options have narrowed. Lighting should be designed with the architecture and with the furniture layout known. If the position of the dining table is not decided, neither is the position of the pendant above it.
Light is not the last layer of a space but one of its first materials.
Frequently asked questions
What colour temperature is best for a living room?
For living rooms and bedrooms, warm white between 2700K and 3000K is the usual choice. Dimmable fittings let you soften the light further in the evening.
When should a lighting plan be made?
Together with the architectural design and furniture layout, before the electrical drawings. That way cables, junction boxes and ceiling details are planned around the light.
Do more spotlights light a room better?
Not always. Many spotlights create flat, shadowless light and a cluttered ceiling. Fewer, well-placed sources combined with indirect light usually work better.
