Property record

946 East Old Willow Road, Prospect Heights

Apartments in Prospect Heights, Illinois. It covers 67,542 square feet on the ground.

This building

946 East Old Willow Road, Prospect Heights. Apartments in Prospect Heights, Illinois. Property ID sphym3c25em0wap.

Facts about 946 East Old Willow Road, Prospect Heights
Fact	Value	Source
Address	946 East Old Willow Road, Prospect Heights, IL 60070	USA Structures
Building type	Apartments	USA Structures and SkyPSI estimator
Footprint	67,542 square feet	USA Structures
Perimeter	3,019.82 feet	USA Structures
Height	25.84 feet	Overture Maps building footprints and Google Open Buildings
Stories	3 stories	Overture Maps building footprints and Google Open Buildings
Exterior wall area	78,036 square feet	SkyPSI estimator

Whole-building ranges from the SkyPSI estimator, calibrated October 2, 2026. Grade C: modelled from the Texas calibration. What the grades mean.

Exterior soft wash from a boom lift, whole building
Service	Low	Most likely	High
Facade wash, conventional access	$8,500	$15,500	$25,500

Each fact names the source it comes from. A building file carries the source of each field, and SkyPSI shows that source beside the fact.

USA Structures: Building footprints, heights and occupancy from FEMA's USA Structures.
Google Open Buildings: Building outlines and heights from Google Open Buildings, reached through the Overture Maps buildings theme.
Overture Maps building footprints: Building outlines, heights and floor counts from the Overture Maps buildings theme.
SkyPSI estimator: SkyPSI's own price model, calibrated rates and building-class rules.

Cost ranges come from the SkyPSI estimator, calibrated October 2, 2026. How a SkyEstimate is built.

Ask SkyPSI for a quote on your building.

Sources: USA Structures, Google Open Buildings, Overture Maps building footprints, SkyPSI estimator.

An estimate, not a quote. How a SkyEstimate is built.