Property record

28420 Witherspoon Parkway

Industrial in California. It covers 11,467 square feet on the ground.

This building

28420 Witherspoon Parkway. Industrial in California. Property ID sppq9qj9sg5gvrt.

Facts about 28420 Witherspoon Parkway
Fact	Value	Source
Address	28420 Witherspoon Parkway, CA 91355	Overture Maps addresses
Building type	Industrial	USA Structures and SkyPSI estimator
Footprint	11,467 square feet	USA Structures
Perimeter	464.47 feet	USA Structures
Height	28.54 feet	Overture Maps building footprints and Google Open Buildings
Stories	1 story	Overture Maps building footprints and Google Open Buildings
Exterior wall area	13,258 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	$2,000	$3,500	$6,000

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 addresses: Street addresses from the Overture Maps addresses 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 addresses, Overture Maps building footprints, SkyPSI estimator.

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