Property record
401 East Ontario Street, Chicago
Apartments in Chicago, Illinois. It covers 10,601 square feet on the ground.
This building
401 East Ontario Street, Chicago. Apartments in Chicago, Illinois. Property ID sp9cef6zx8qx1j1.
Facts
| Fact | Value | Source |
|---|---|---|
| Address | 401 East Ontario Street, Chicago, IL 60611 | Overture Maps addresses |
| Building type | Apartments | USA Structures and SkyPSI estimator |
| Footprint | 10,601 square feet | USA Structures |
| Perimeter | 505 feet | USA Structures |
| Height | 515.09 feet | Overture Maps building footprints and Google Open Buildings |
| Stories | 51 stories | Overture Maps building footprints and Google Open Buildings |
| Exterior wall area | 260,122 square feet | SkyPSI estimator |
Cost ranges
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
| Service | Low | Most likely | High |
|---|---|---|---|
| Facade wash, conventional access | $40,000 | $72,500 | $120,500 |
Window cleaning
| Service | Low | Most likely | High |
|---|---|---|---|
| Exterior windows, rope access | $53,500 | $107,000 | $187,500 |
| Windows inside and out, rope access | $59,000 | $118,000 | $209,000 |
Best method
- Exterior soft wash: Boom lift and Rope access fit this building at the same cost, most likely $72,500.
- Window cleaning: Rope access fits this building, most likely $107,000.
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How we know
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.
Request a QuoteSources: USA Structures, Google Open Buildings, Overture Maps addresses, Overture Maps building footprints, SkyPSI estimator.
An estimate, not a quote. How a SkyEstimate is built.