Plan outdoor space with context
Use the map to explore sunlight and shade around a location. It is useful when considering a home, planning a garden or terrace, or evaluating solar panels.
Free building shadow map
Building shadow calculator and interactive map
See when nearby buildings cast shade on an address, garden or plot.
Shadowly makes building shade easier to explore. Search for an address, select a date and time, then see where sunlight falls and which buildings create shade.
Open the shadow mapFrom address to shade map
Shadowly combines the sun's position with available building geometry and height data. For locations in the Netherlands, the app uses 3DBAG data when available; elsewhere OpenStreetMap is the fallback.
Compare the moments that matter
Shade changes by season, time and place. Compare more than one hour and date before making a spatial or practical decision.
Frequently asked questions
Can I check shade for my address?
Yes. Search for an address on the map, choose a date and change the hour to view estimated building shade in the immediate area.
How accurate is the shadow map?
Results depend on available building height and roof geometry. In the Netherlands, 3DBAG can provide detailed height data; elsewhere OpenStreetMap heights may be estimated.
Is Shadowly suitable for an official shadow study?
No. Shadowly is for exploration and indication. For permits, legal assessment or design decisions, commission a professional shadow study.
Explore shade on the map
Choose an address and compare hours and dates on the interactive shadow map.
Open the shadow map