Property record

4250 Route 71, Oswego

School in Oswego, Illinois. It covers 432,590 square feet on the ground.

This building

4250 Route 71, Oswego. School in Oswego, Illinois. Property ID spf4pa8qhb63sjm.

Facts about 4250 Route 71, Oswego
Fact	Value	Source
Address	4250 Route 71, Oswego, IL 60543	Overture Maps addresses
Building type	School	USA Structures and SkyPSI estimator
Footprint	432,590 square feet	USA Structures
Perimeter	5,291.24 feet	USA Structures
Height	20.4 feet	Overture Maps building footprints and Google Open Buildings
Height survey year	2017	Overture Maps building footprints and Google Open Buildings
Stories	2 stories	Overture Maps building footprints and Google Open Buildings
Exterior wall area	107,966 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	$16,000	$29,000	$48,500

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 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.