Light pollution is increasingly part of planning conditions, and it is simply wasted light. A facade scheme can be both striking and responsible.
1. Light down where you can
Top-down washing from a cornice puts light on the facade and keeps it out of the sky. Where uplighting is necessary, keep beams tight and stop them below the roofline.
2. Match the beam to the surface
A beam wider than the wall lights the sky around it. Narrow and asymmetric optics put the light where it is needed.
3. Use shields and louvres
Snoots, visors and louvres cut glare toward neighbours and passers-by, and reduce spill past the edge of the building.
4. Choose warmer white
Warm white sources contain less short-wavelength light, which scatters more in the atmosphere and affects wildlife more. For most heritage and landscape settings, 2700 to 3000 K is a good starting point.
5. Switch off or dim late
A curfew, full scene until late evening, reduced scene afterwards, cuts energy and spill when few people are watching.
None of these habits makes a building look worse. Most make it look more deliberate.