Shadow Risk Analyser
Will a new build next door block your sun?
All sources are independent — a positive from one confirms or contradicts another
What This Report Checks
Shadow modelling from the maximum-height building envelope on the adjacent lot.
Five ADG Solar Access Scenarios
Shadow modelled at 9am, noon, and 3pm on the winter solstice (June 21), plus noon on the spring equinox (September 21) and summer solstice (December 21). These are the test dates NSW planning panels use.
Maximum-Height Building Envelope
Shadow is cast from the tallest building permitted on the adjacent lot under the applicable planning controls. This is the worst case — the actual development may be shorter.
Shadow Path and Overlap
For each scenario, the exact shadow direction, length, and whether it crosses onto your property. Displayed on an interactive map so you can see precisely which part of your lot is affected.
Construction Activity Detection
High-resolution satellite imagery analysis to check whether construction has already begun on the adjacent lot. If earthworks or building activity is detected, you may need to act faster.
Free Check vs Full Report
Get an instant ADG verdict, or unlock the full scenario analysis for $29.
How It Works
Solar position is calculated using astronomical algorithms for your exact latitude and longitude at each test date and time. Shadow length and direction are derived geometrically from the maximum permissible building height on the adjacent lot, sourced from NSW Government planning controls. No assumptions are made about the design — the model uses the full height envelope. Construction detection uses spectral analysis of high-resolution satellite imagery to identify disturbed ground.