Property record

333 East Ontario Street, Chicago

Apartments in Chicago, Illinois. It covers 12,459 square feet on the ground.

This building

333 East Ontario Street, Chicago. Apartments in Chicago, Illinois. Property ID sp1fd8nn4fkzbe6.

Facts about 333 East Ontario Street, Chicago
Fact	Value	Source
Address	333 East Ontario Street, Chicago, IL 60611	Overture Maps addresses
Building type	Apartments	Overture Maps building footprints and SkyPSI estimator
Footprint	12,459 square feet	Overture Maps building footprints
Perimeter	486.81 feet	Overture Maps building footprints
Height	429.79 feet	Overture Maps building footprints and Google Open Buildings
Stories	53 stories	Overture Maps building footprints and Google Open Buildings
Exterior wall area	117,513 square feet	SkyPSI estimator
Parcel number	17102070140000	County and state public records
Land use	397 Multi-Family	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 and by rope access, whole building
Service	Low	Most likely	High
Facade wash, conventional access	$32,500	$58,500	$97,500

Window cleaning by rope access, whole building
Service	Low	Most likely	High
Exterior windows, rope access	$43,500	$86,500	$151,500
Windows inside and out, rope access	$47,500	$95,000	$168,500

Exterior soft wash: Boom lift and Rope access fit this building at the same cost, most likely $58,500.
Window cleaning: Rope access fits this building, most likely $86,500.

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.

County and state public records: Situs addresses, parcel numbers, land use, year built and floor counts from county appraisal districts and state open data.
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: County and state public records, Google Open Buildings, Overture Maps addresses, Overture Maps building footprints, SkyPSI estimator.

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