Methodology

How the sunlight score works

Short version: we estimate direction, track likely sun position through the day, then score what that means for real rooms.

Try The Calculator

1) Orientation estimate

We try building footprints first. If that fails, we use nearby road geometry. If map data is thin, we mark confidence lower and let you adjust direction manually.

2) Sunlight timeline

For each half-hour block we estimate sun azimuth and altitude, then score likely direct sunlight based on how the windows face.

3) Seasonal variation

Summer and winter feel different at the same address. The season switch is there so you can see that shift before move-in.

What this cannot know

Interior finishes, tint, heavy curtains, exact floor plan, and temporary obstructions are outside map data. That is why the tool includes confidence and manual controls.