# 255 Union Avenue, New Rochelle Office in New Rochelle, New York. It covers 59,699 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 255 Union Avenue, New Rochelle. Office in New Rochelle, New York. Property ID sp708gd6c1j14yt. ## Facts **Facts about 255 Union Avenue, New Rochelle** | Fact | Value | Source | | --- | --- | --- | | Address | 255 Union Avenue, New Rochelle, NY 10801 | [USA Structures](https://skypsi.com/property/ny/new-york/sp708gd6c1j14yt-255-union-avenue-new-rochelle/#how-we-know) | | Building type | Office | [USA Structures and SkyPSI estimator](https://skypsi.com/property/ny/new-york/sp708gd6c1j14yt-255-union-avenue-new-rochelle/#how-we-know) | | Footprint | 59,699 square feet | [USA Structures](https://skypsi.com/property/ny/new-york/sp708gd6c1j14yt-255-union-avenue-new-rochelle/#how-we-know) | | Perimeter | 1,640.2 feet | [USA Structures](https://skypsi.com/property/ny/new-york/sp708gd6c1j14yt-255-union-avenue-new-rochelle/#how-we-know) | | Height | 42.95 feet | [USGS 3D Elevation Program](https://skypsi.com/property/ny/new-york/sp708gd6c1j14yt-255-union-avenue-new-rochelle/#how-we-know) | | Height survey year | 2019 | [USGS 3D Elevation Program](https://skypsi.com/property/ny/new-york/sp708gd6c1j14yt-255-union-avenue-new-rochelle/#how-we-know) | | Stories | 3 stories | [USGS 3D Elevation Program](https://skypsi.com/property/ny/new-york/sp708gd6c1j14yt-255-union-avenue-new-rochelle/#how-we-know) | | Exterior wall area | 70,441 square feet | [SkyPSI estimator](https://skypsi.com/property/ny/new-york/sp708gd6c1j14yt-255-union-avenue-new-rochelle/#how-we-know) | | Parcel number | 5510004-1280-0024 | [County and state public records](https://skypsi.com/property/ny/new-york/sp708gd6c1j14yt-255-union-avenue-new-rochelle/#how-we-know) | | Land use | 483 Converted residence | [County and state public records](https://skypsi.com/property/ny/new-york/sp708gd6c1j14yt-255-union-avenue-new-rochelle/#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 from a boom lift, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Facade wash, conventional access | $11,000 | $20,000 | $33,500 | ## Best method - [Exterior soft wash](https://skypsi.com/estimates/exterior-soft-wash/): Boom lift fits this building, most likely $20,000. ## Similar buildings nearby - [238 Washington Avenue, New Rochelle](https://skypsi.com/property/ny/new-york/sp2rcxgm4m1ccak-238-washington-avenue-new-rochelle/) - [70 4th Street, New Rochelle](https://skypsi.com/property/ny/new-york/spbtzj6613v42gk-70-4th-street-new-rochelle/) - [236 Washington Avenue, New Rochelle](https://skypsi.com/property/ny/new-york/sp4d797r6z6yhb2-236-washington-avenue-new-rochelle/) - [54 3rd Street, New Rochelle](https://skypsi.com/property/ny/new-york/sp1r9ahr3w7x977-54-3rd-street-new-rochelle/) - [266 Union Avenue, New Rochelle](https://skypsi.com/property/ny/new-york/sp3b1j7w1yg9x31-266-union-avenue-new-rochelle/) - [233 Union Avenue, New Rochelle](https://skypsi.com/property/ny/new-york/spqgg9qbn7tjte9-233-union-avenue-new-rochelle/) - [83 3rd Street, New Rochelle](https://skypsi.com/property/ny/new-york/sphfqczv3e405he-83-3rd-street-new-rochelle/) - [254 Washington Avenue, New Rochelle](https://skypsi.com/property/ny/new-york/sphmxxv6h72pxc5-254-washington-avenue-new-rochelle/) ## 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/sp708gd6c1j14yt-255-union-avenue-new-rochelle/ JSON: https://skypsi.com/property/ny/new-york/sp708gd6c1j14yt-255-union-avenue-new-rochelle.json Content license: https://skypsi.com/content-license.txt