Property record

4151 South Ashland Avenue, Chicago

Government in Chicago, Illinois. It covers 197,849 square feet on the ground.

This building

4151 South Ashland Avenue, Chicago. Government in Chicago, Illinois. Property ID spwcsb9ec4pdzgd.

Facts about 4151 South Ashland Avenue, Chicago
Fact	Value	Source
Address	4151 South Ashland Avenue, Chicago, IL 60609	USA Structures
Building type	Government	USA Structures and SkyPSI estimator
Footprint	197,849 square feet	USA Structures
Perimeter	2,347.87 feet	USA Structures
Height	35.01 feet	USA Structures
Stories	3 stories	USA Structures
Exterior wall area	82,191 square feet	SkyPSI estimator
Parcel number	20051080010000	County and state public records
Land use	593 Commercial/Industrial	County and state public records

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	$12,500	$22,000	$37,000

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.

County and state public records: Situs addresses, parcel numbers, land use, year built and floor counts from county appraisal districts and state open data.
USA Structures: Building footprints, heights and occupancy from FEMA's USA Structures.
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: County and state public records, USA Structures, SkyPSI estimator.

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