Ground-floor area, m².
Balconies.
Ground-floor level (local y), stilts included; set once the terrain is known.
Bottom of the foundation or stilts (local y).
Footprint centroid.
Rooftop plant, tanks, antennas, chimneys, wall AC units, stilts.
District it stands in.
Main door.
Storey height, metres.
Storeys.
Highest wall top, metres above the base.
Index in the building list.
Lot it stands on.
Wall material.
Volumes (an L-shaped house has two).
Estimated residents.
Pitched roof material (flat roofs are always concrete/membrane).
Stable random number 0..1 (colour pick, window lights).
Shopfronts on the ground floor.
Stilt height under the ground floor, metres (0 = on the ground).
Style.
OptionaltintWall colour (#rrggbb) instead of one from the material's palette (a red barn).
A landmark or farm building, or null for homes, shops, offices and industry.
A planned building (pure data; geometry is built from it).