Shadow Check in Blue Mountains, NSW
See how much shadow neighbouring buildings cast on your Blue Mountains property at the summer and winter solstice. Heritage village character with single-storey cottages, but steep terrain and mature canopy create natural shadow. New 2-storey builds on sloping lots are the main built shadow risk. Blue Mountains has 489 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 Blue Mountains.
Analysis points
Summer + Winter
solstice comparison
ADG check
3hrs direct sun
NSW min. standard
Heritage items
489
in Blue Mountains
Shadow and overshadowing in Blue Mountains — common questions
Is shadow a risk in the Blue Mountains?
Shadow risk from built development is low to moderate. Village character and heritage controls limit large-scale development. However, steep terrain and dense tree canopy create significant natural shadow, particularly on south-facing slopes in winter.
What causes shadow issues in the Blue Mountains?
Terrain and tree canopy are the dominant shadow sources. Where built shadow occurs, it is typically from 2-storey dwellings on elevated lots. New builds replacing single-storey cottages with 2-storey designs also create localised impact.
Does heritage village character limit shadow risk?
Partially. Heritage conservation areas in Leura, Katoomba, and Wentworth Falls restrict demolition and replacement with larger buildings. However, not all areas are heritage-protected.
More property checks for Blue Mountains
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.