Property record
309 West 20 Street, New York
School in New York, New York. It covers 21,756 square feet on the ground.
This building
309 West 20 Street, New York. School in New York, New York. Property ID sp5axk0b1qh48kb.
Facts
| Fact | Value | Source |
|---|---|---|
| Address | 309 West 20 Street, New York, NY 10011 | USA Structures |
| Building type | School | USA Structures and SkyPSI estimator |
| Place name | Ryan Clinic At Ps 11 - William Harris School | Overture Maps places |
| Place type | health and medical | Overture Maps places |
| Footprint | 21,756 square feet | USA Structures |
| Perimeter | 1,012.95 feet | USA Structures |
| Height | 94.82 feet | Overture Maps building footprints and Google Open Buildings |
| Stories | 7 stories | Overture Maps building footprints and Google Open Buildings |
| Exterior wall area | 96,044 square feet | SkyPSI estimator |
| Parcel number | 1007440024 | County and state public records |
| Land use | 08 Public Facilities & Institutions (class W1) | County and state public records |
| Year built | 1925 | County and state public records |
| Stories on the parcel record | 5 stories | County and state public records |
| Building area on the parcel record | 89,802 square feet | County and state public records |
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 (drone) | $8,000 | $15,000 | $25,500 |
| Facade wash with mold or growth treatment | $12,000 | $22,500 | $38,500 |
| Service | Low | Most likely | High |
|---|---|---|---|
| Facade wash, conventional access | $15,000 | $27,500 | $45,500 |
Window cleaning
| Service | Low | Most likely | High |
|---|---|---|---|
| Exterior windows only | $3,000 | $6,000 | $10,000 |
| Windows inside and out | $5,000 | $10,000 | $18,500 |
| Service | Low | Most likely | High |
|---|---|---|---|
| Exterior windows, rope access | $20,500 | $40,500 | $71,000 |
| Windows inside and out, rope access | $22,500 | $44,500 | $79,500 |
Best method
- Exterior soft wash: Drone has the lowest cost, most likely $15,000.
- Window cleaning: Drone has the lowest cost, most likely $6,000.
Similar buildings nearby
- 313 W 20 St, New York
- 306 West 19 Street, New York
- 305 W 18 St, New York
- 319 W 18 St, New York
- 351 W 18 St, New York
- 440 West 21 Street, New York
- 353 West 17 Street, New York
- 313 West 17 Street, New York
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.
- 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.
- Google Open Buildings: Building outlines and heights from Google Open Buildings, reached through the Overture Maps buildings theme.
- Overture Maps building footprints: Building outlines, heights and floor counts from the Overture Maps buildings theme.
- Overture Maps places: Business and place names from the Overture Maps places 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: County and state public records, USA Structures, Google Open Buildings, Overture Maps building footprints, Overture Maps places, SkyPSI estimator.
An estimate, not a quote. How a SkyEstimate is built.