Guest Room Light Levels: A Specification You Can Defend

Guest Room Light Levels: A Specification You Can Defend

Guest room lighting is usually specified by feel and defended by nobody. A short table of targets turns a subjective discussion into a reviewable specification, and it gives the operator something to test after handover.

The six jobs in one room

Each has a measurable target at a specific plane:

PositionPlaneTargetControl
EntryFloor, 1 m radius100–150 lxSwitch at the door
DeskDesk surface300–500 lxLocal, at the desk
Bedside readingPage, seated300–500 lxSwitch within reach of the bed
General ambientMid-room, floor80–150 lxStepped or dimmable
Bathroom mirrorFace, standing500 lxLocal, frontal, warm
Night pathFloor between bed and bathUnder 20 lxVery low dimming floor

Warm and dimmable is the default

2700K to 3000K covers almost every brand standard, with uniform colour temperature across the room so that mixed sources do not produce colour shifts on skin. Every luminaire a guest can control should dim, and the dimming floor should be low enough to serve as a night light without a separate fixture.

Contrast between zones is the complaint generator

Guests do not complain about lux. They complain about a bright bathroom and a dark bedroom, or about a spotlight over the desk that makes the rest of the room feel like a cave. Keeping adjacent spaces within a factor of three or four removes most of that reaction.

Testing after handover

Measure the targets in three rooms, not one. Record the results with the room number and the date, because a lighting complaint nine months later is easier to answer with a measurement than with a memory.

Where portable luminaires earn their place

Floor and table lamps give the room a residential feel and give the operator flexibility for a renovation. They also allow a room to be re-styled without touching the electrical installation, which for an older property is frequently the difference between a refresh and a project.

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