Site setup setbacks, driveway, easements, sun
Driveway
No council or national dataset holds private driveways, so this is
geometry, not observation — a corridor from the frontage to the
building. Trace the real one for anything that matters.
Sun
Sampled hourly from 9am to 3pm on the solstice, on flat ground.
Full sun is never overshadowed, deep shade always is. Christchurch
buildings carry measured LiDAR heights and ignore the storey count
above; it is the fallback everywhere else.