# 156 South 1st Avenue, Mount Vernon School in Mount Vernon, New York. It covers 11,884 square feet on the ground. Rates calibrated October 2, 2026. Review by December 31, 2026. Updated October 27, 2026. Method propdata-estimator-v6. ## This building 156 South 1st Avenue, Mount Vernon. School in Mount Vernon, New York. Property ID spqs6bv5fqp3w0k. ## Facts **Facts about 156 South 1st Avenue, Mount Vernon** | Fact | Value | Source | | --- | --- | --- | | Address | 156 South 1st Avenue, Mount Vernon, NY 10550 | [USA Structures](https://skypsi.com/property/ny/new-york/spqs6bv5fqp3w0k-156-south-1st-avenue-mount-vernon/#how-we-know) | | Building type | School | [USA Structures and SkyPSI estimator](https://skypsi.com/property/ny/new-york/spqs6bv5fqp3w0k-156-south-1st-avenue-mount-vernon/#how-we-know) | | Footprint | 11,884 square feet | [USA Structures](https://skypsi.com/property/ny/new-york/spqs6bv5fqp3w0k-156-south-1st-avenue-mount-vernon/#how-we-know) | | Perimeter | 811.45 feet | [USA Structures](https://skypsi.com/property/ny/new-york/spqs6bv5fqp3w0k-156-south-1st-avenue-mount-vernon/#how-we-know) | | Height | 50.66 feet | [USGS 3D Elevation Program](https://skypsi.com/property/ny/new-york/spqs6bv5fqp3w0k-156-south-1st-avenue-mount-vernon/#how-we-know) | | Height survey year | 2019 | [USGS 3D Elevation Program](https://skypsi.com/property/ny/new-york/spqs6bv5fqp3w0k-156-south-1st-avenue-mount-vernon/#how-we-know) | | Stories | 4 stories | [USGS 3D Elevation Program](https://skypsi.com/property/ny/new-york/spqs6bv5fqp3w0k-156-south-1st-avenue-mount-vernon/#how-we-know) | | Exterior wall area | 41,105 square feet | [SkyPSI estimator](https://skypsi.com/property/ny/new-york/spqs6bv5fqp3w0k-156-south-1st-avenue-mount-vernon/#how-we-know) | | Parcel number | 550800165.79-3122-17 | [County and state public records](https://skypsi.com/property/ny/new-york/spqs6bv5fqp3w0k-156-south-1st-avenue-mount-vernon/#how-we-know) | | Land use | 482 Downtown row type (detached) | [County and state public records](https://skypsi.com/property/ny/new-york/spqs6bv5fqp3w0k-156-south-1st-avenue-mount-vernon/#how-we-know) | ## Cost ranges Whole-building ranges from the SkyPSI estimator, calibrated October 2, 2026. Grade C: modelled from the Texas calibration. [What the grades mean](https://skypsi.com/estimates/methodology/confidence-grades/). ### Exterior soft wash **Exterior soft wash by drone, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Facade wash (drone) | $3,500 | $6,500 | $10,500 | | Facade wash with mold or growth treatment | $5,000 | $9,500 | $16,500 | **Exterior soft wash from a boom lift and by rope access, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Facade wash, conventional access | $6,500 | $11,500 | $19,500 | ### Window cleaning **Window cleaning by drone, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Exterior windows only | $1,500 | $2,500 | $4,500 | | Windows inside and out | $2,000 | $4,500 | $7,500 | **Window cleaning by rope access, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Exterior windows, rope access | $8,500 | $17,000 | $30,000 | | Windows inside and out, rope access | $9,500 | $19,000 | $33,500 | ## Best method - [Exterior soft wash](https://skypsi.com/estimates/exterior-soft-wash/): Drone has the lowest cost, most likely $6,500. - [Window cleaning](https://skypsi.com/estimates/window-cleaning/): Drone has the lowest cost, most likely $2,500. ## Similar buildings nearby - [149 South 2nd Avenue, Mount Vernon](https://skypsi.com/property/ny/new-york/spmbwcnjj3wn9ay-149-south-2nd-avenue-mount-vernon/) - [240 Franklin Avenue, Mount Vernon](https://skypsi.com/property/ny/new-york/spb3pvf0djw0v6r-240-franklin-avenue-mount-vernon/) - [258 South 4th Avenue, Mount Vernon](https://skypsi.com/property/ny/new-york/spxbkbm5551cptz-258-south-4th-avenue-mount-vernon/) - [50 East 1st Street, Mount Vernon](https://skypsi.com/property/ny/new-york/sp4jn24f7jenx7z-50-east-1st-street-mount-vernon/) - [118 East 4th Street, Mount Vernon](https://skypsi.com/property/ny/new-york/sp733855qgkyp20-118-east-4th-street-mount-vernon/) - [122 South 5th Avenue, Mount Vernon](https://skypsi.com/property/ny/new-york/spj0ywpj937jyyq-122-south-5th-avenue-mount-vernon/) - [121 South 6th Avenue, Mount Vernon](https://skypsi.com/property/ny/new-york/sp7fd3eyf1rf175-121-south-6th-avenue-mount-vernon/) - [250 South 6th Avenue, Mount Vernon](https://skypsi.com/property/ny/new-york/sp3y4nfv28df865-250-south-6th-avenue-mount-vernon/) ## 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](https://comptroller.texas.gov/taxes/property-tax/): Situs addresses, parcel numbers, land use, year built and floor counts from county appraisal districts and state open data. - [USA Structures](https://disasters.geoplatform.gov/USA_Structures/): Building footprints, heights and occupancy from FEMA's USA Structures. - [SkyPSI estimator](https://skypsi.com/estimates/methodology/sources-and-licensing/): SkyPSI's own price model, calibrated rates and building-class rules. - [USGS 3D Elevation Program](https://www.usgs.gov/3d-elevation-program): Lidar elevation data that gives building heights where other sources have none. Cost ranges come from the SkyPSI estimator, calibrated October 2, 2026. [How a SkyEstimate is built](https://skypsi.com/estimates/methodology/how-a-skyestimate-is-built/). [Request a Quote](https://skypsi.com/request-a-quote) --- Sources: County and state public records, USA Structures, SkyPSI estimator, USGS 3D Elevation Program. Parcel and address facts from county appraisal districts and state open-data programs (public records). https://comptroller.texas.gov/taxes/property-tax/ Building footprints: USA Structures, FEMA Response Geospatial Office, Oak Ridge National Laboratory and U.S. Geological Survey (CC BY 4.0). https://disasters.geoplatform.gov/USA_Structures/ Building heights from the U.S. Geological Survey 3D Elevation Program (public domain). https://www.usgs.gov/3d-elevation-program Page: https://skypsi.com/property/ny/new-york/spqs6bv5fqp3w0k-156-south-1st-avenue-mount-vernon/ JSON: https://skypsi.com/property/ny/new-york/spqs6bv5fqp3w0k-156-south-1st-avenue-mount-vernon.json Content license: https://skypsi.com/content-license.txt