Layer Estimates:

Layer: Building Polygons (ID:0)
Count: 171875
Extent:

XMin: -7142945.13736518
YMin: 5530216.17878915
XMax: -6918640.83602799
YMax: 5667125.04902859
Spatial Reference: 102100 (3857)

Layer: Buildings (ID:1)
Count: 137412

Layer: Building Uses (ID:2)
Count: 162191