Property record
71 Convent Avenue, New York
School in New York, New York. It covers 7,904 square feet on the ground.
This building
71 Convent Avenue, New York. School in New York, New York. Property ID spqzc81160eg579.
Facts
| Fact | Value | Source |
|---|---|---|
| Address | 71 Convent Avenue, New York, NY 10027 | USA Structures |
| Building type | School | USA Structures and SkyPSI estimator |
| Place name | Sisulu-Walker Charter School | Overture Maps places |
| Place type | public school | Overture Maps places |
| Footprint | 7,904 square feet | USA Structures |
| Perimeter | 424.38 feet | USA Structures |
| Height | 53.51 feet | USA Structures |
| Stories | 4 stories | USA Structures |
| Exterior wall area | 22,709 square feet | SkyPSI estimator |
| Parcel number | 1019570001 | County and state public records |
| Land use | 08 Public Facilities & Institutions (class W5) | County and state public records |
| Year built | 1930 | County and state public records |
| Stories on the parcel record | 5 stories | County and state public records |
| Building area on the parcel record | 400,160 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) | $2,000 | $3,500 | $6,000 |
| Facade wash with mold or growth treatment | $3,000 | $5,500 | $9,500 |
| Service | Low | Most likely | High |
|---|---|---|---|
| Facade wash, conventional access | $3,500 | $6,500 | $11,000 |
Window cleaning
| Service | Low | Most likely | High |
|---|---|---|---|
| Exterior windows only | $500 | $1,500 | $2,500 |
| Windows inside and out | $1,000 | $2,500 | $4,500 |
| Service | Low | Most likely | High |
|---|---|---|---|
| Exterior windows, rope access | $5,000 | $10,000 | $17,000 |
| Windows inside and out, rope access | $5,500 | $11,000 | $19,000 |
Best method
- Exterior soft wash: Drone has the lowest cost, most likely $3,500.
- Window cleaning: Drone has the lowest cost, most likely $1,500.
Similar buildings nearby
- 89 Convent Avenue, New York
- 425 West 130 Street, New York
- 111 Convent Avenue, New York
- 119 Convent Avenue, New York
- 115 Convent Avenue, New York
- 85 St Nicholas Ter, New York
- 141 Convent Avenue, New York
- 141 Convent Avenue, 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.
- 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, Overture Maps places, SkyPSI estimator.
An estimate, not a quote. How a SkyEstimate is built.