Shadow Check in Blacktown, NSW
See how much shadow neighbouring buildings cast on your Blacktown property at the summer and winter solstice. Large-lot suburban blocks typically provide good separation, but secondary dwelling additions on smaller corner lots create localised shadow risk. Shadow analysis works best alongside a solar yield estimate — shading directly reduces panel output. If you are planning a granny flat, check SEPP eligibility and nearby development activity in Blacktown.
Analysis points
Summer + Winter
solstice comparison
ADG check
3hrs direct sun
NSW min. standard
Heritage items
131
in Blacktown
Shadow and overshadowing in Blacktown — common questions
Is shadow a risk in Blacktown?
Shadow risk is lower in Blacktown than in inner Sydney, due to larger lot sizes and lower density. However, secondary dwelling additions and dual-occupancy development on smaller lots can create shadow impacts, particularly where north-facing yards are narrow.
What causes shadow issues in Blacktown?
The main sources are secondary dwelling (granny flat) additions to rear yards, and dual-occupancy development on smaller lots in older suburbs. Two-storey new dwellings on knockdown-rebuild sites can also cast shadow on adjoining single-storey homes.
Are secondary dwellings a shadow concern in Blacktown?
They can be. A granny flat built to the rear of a neighbouring property can affect your north-facing yard if your property is immediately south. The tool above runs a seasonal shadow analysis using the actual position of existing buildings at your address.
More property checks for Blacktown
Also check nearby councils
Shadow analysis uses building footprints and height data from NSW Spatial Services aerial imagery. The ADG 3-hour minimum applies to habitable rooms in new residential development assessed under the Apartment Design Guide. Results are indicative only -- actual shadow impact depends on exact roof pitch, vegetation, and neighbouring building heights. Not planning advice.