Shadow Check in Hornsby, NSW
See how much shadow neighbouring buildings cast on your Hornsby property at the summer and winter solstice. Mature tree canopy and 2-storey dwellings on moderately sloping blocks are the primary shadow sources -- terrain and vegetation both matter. Hornsby has 769 heritage items — character buildings can cast unexpected shadows. 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 Hornsby.
Analysis points
Summer + Winter
solstice comparison
ADG check
3hrs direct sun
NSW min. standard
Heritage items
769
in Hornsby
Shadow and overshadowing in Hornsby — common questions
Is shadow a risk in Hornsby Shire?
Shadow risk in Hornsby is moderate. The combination of mature tree canopy, sloping terrain, and 2-storey dwellings means many properties experience more shadow than in flat suburban areas. Secondary dwelling additions and dual-occupancy development are less frequent than in inner Sydney but do occur.
What causes shadow issues in Hornsby?
Established trees are the most common shadow source -- large neighbours' trees can shade north-facing windows and solar panels. Two-storey homes on upslope lots are the second major source. New medium-density development near Hornsby and Waitara stations is an emerging issue.
Can I do anything about neighbouring trees causing shadow in Hornsby?
Tree removal in Hornsby Shire requires a DA or tree permit in most cases due to the council's significant tree register. If a neighbour's tree is causing shadow, you can raise it with the council but removal is not guaranteed. The shadow tool above does not model individual trees -- it models buildings only.
More property checks for Hornsby
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.