Homeowners planning their garden
Where should the terrace, the vegetable patch or the sunken seating area go? See how the sun falls on your plot, hour by hour and season by season.
Use cases
Start with your situation.
Three main routes — objection, renovation, agency — plus the audiences we support occasionally or through custom work.
Objection to a building plan
Your neighbour builds, your sunlight disappears.
Is an extension, roof addition or apartment block coming next door? Enter the building plan and get a TNO-tested report for your formal response (zienswijze) or objection (bezwaar).
Start your objection fileApplying for a permit
Renovating or extending yourself
Are you planning an extension, roof addition or annexe? Simulate before the permit application whether the design is feasible — and avoid objections afterwards.
Check your renovationAgencies & professionals
Architects and structural designers
A sunlight study per project in 10 minutes instead of 10 days via an external agency. €29.95 per report, no subscription.
Schaduwplan for architectsAlso for
Specialist applications.
Not the main route, but a good fit. Email us for API access, a partnership or a custom quote.
Solar-panel installers
Yield calculations with real, built shadow instead of a Zonatlas estimate. €29.95 per address for a substantiated report.
Estate agents (makelaars) & sellers
Add sun-and-shadow analysis to your Funda listing. Prove to buyers that the garden really does get sun — and avoid surprises at the closing stage.
Landscapers (hoveniers) & garden designers
Use the 3D viewer to back up plant choices with data — hours of sun per location, across the whole year. The standard report is calibrated to TNO; get in touch for a landscaper variant.
Municipalities (gemeente) & policymakers
A reviewer tool for permit applications. Test submitted sunlight reports against your local norm.
Lawyers & legal aid
Case-by-case sunlight reports for neighbour law and administrative law. With a methodology appendix that matches the submission.
Don't see your situation here?
Email [email protected] or try Schaduwplan first. If we can help you think it through, we will.