| Primary address | 521 East 3rd Street, Mount Vernon |
| Zip code | 10553 |
| County | Westchester |
| Municipality | Mt Vernon |
| Neighborhood | Mount Vernon Heights |
| Parcel ID | 165.82-4028-8 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 04/29/2022 |
| Sale price | $4,150,000 |
| Arm's length | Register |
| Current property tax | $38,130 |
| Building sqft | 11,969 |
| Building class | Office Building |
| Acreage | 0.48 |
| Zoning district | Register |
| School district | Mount Vernon |
View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.
Property reports include comprehensive occupancy, improvement and development information (where available).
Create a free account to access valuable data points such as:
This Office Building (SCILSO) located at 521 East 3rd Street, Mount Vernon, NY 10553 has a total of 11,969 square feet and a current price per square foot of $346.
What is the market value of 521 East 3rd Street, Mount Vernon, NY 10553?The current market value is $3,055,556.
View detailed property contacts like owners, building management, representatives from permits and tenants with a free account.
| Listing type | For Sale |
|---|---|
| Listing date | 11/13/2025 |
| Last updated | 05/15/2026 |
| Lot size | 21000 SF |
~22,032 SF BUILDING SIZE ON 21,000 SF LOT • ON-SITE PARKING • TWO TENANT BUILDING • OPERATE AND COLLECT RENT • EXCELLENT INVESTMENT OPPORTUNITY
The subject property consists of a ~22,032 SF building sits on a 21,000 SF lot. The property is comprised of two warehouses; a 7,500 SF upper-level warehouse, with a roll up door, curb cut and 22’ ft Ceiling, as well as a lower-level, 3,500 SF warehouse with one roll-up door and one bay. There is also a ~3,832 SF Class-A o ffi ce space with multiple private o ffi ces and large conference room, and ~7,200 SF converted lab space. The property bene fi ts from gated onsite parking, a freight elevator and ample electrical power boasting a 1,200 AM
Create a free account to view the complete sales history for 521 East 3rd Street, Mount Vernon, including title documents, transfer conditions, mortgages and liens.
*Here are the three most recent sales for this property.
To view the complete history of deeds, mortgages, assignments of leases and rents, and more, sign up for free. Available data goes back to 1966.
R: Recorded date
D: Document date
Access detailed property tax data for 521 East 3rd Street, Mount Vernon, NY 10553. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025 |
| Base tax | $35,605 |
| Current property tax | $38,130 |
| Market value | $3,055,556 |
| Assessed value | $55,000 |
Here's the assessment & property tax history for 521 East 3rd Street, Mount Vernon, including the evolution of the total tax rate and corresponding property tax.
| Year | Market value | Assessment value | Total tax rate | Property tax | Year over year change |
|---|---|---|---|---|---|
| 2025 | $3,055,556 | $55,000 | 647.37 | $35,605 | -0.11% |
| 2024 | $2,864,583 | $55,000 | 648.11 | $35,646 | -58.39% |
| 2023 | $3,216,374 | $55,000 | 1557.71 | $85,674 | +1.03% |
| 2022 | $2,736,318 | $55,000 | 1541.8683 | $84,803 | +1.48% |
| 2021 | $2,500,000 | $55,000 | 1519.4252 | $83,568 | +2.96% |
| Total population | 11,011 |
| Median age | 36.5 |
| Average household income | $113,949 |
| Family households | 69.0% |
| Occupied housing units | 3,642 |
| Owner occupied units | 46.3% |
| Average number of people per household | 2.99 |
| Median year structure built | 1951 |
| Median value for units with a mortgage | $592,900 |
| Median value for units without a mortgage | $473,800 |
Create a free account to unlock extended information for 521 East 3rd Street, Mount Vernon, including whether it's located in FEMA flood zones, floodways or special flood hazard areas, as well as the Coastal barriers resources system area (COBRA).
| FEMA flood zone(s) | X (See more on map) |
Access the detailed traffic volume map for 521 East 3rd Street, Mount Vernon to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.
| View daily traffic map |
Here are the neighbors for 521 East 3rd Street, Mount Vernon.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 177 Hillside Ave, Mount Vernon | 04/24/2020 | ||
| 38 Farrell Ave, Mount Vernon | 04/06/2023 | $560,000 | |
| 537 E 3rd St, Mount Vernon | 03/11/2010 | ||
| 183 Hillside Ave, Mount Vernon | 12/28/2023 | ||
| 174 Brookside Ave, Mount Vernon | 02/21/2019 | ||
| 531 E 3rd St, Mount Vernon | |||
| 54 Farrell Ave, Mount Vernon | 12/16/2005 | ||
| 188 Brookside Ave, Mount Vernon | 05/21/2015 | ||
| 543 E 3rd St, Mount Vernon | 5,736 | 04/08/2004 | $312,500 |
| 187 Hillside Ave, Mount Vernon | 11/06/2006 | $465,000 | |
| 173 Hillside Ave, Mount Vernon | 10/19/2007 | $385,000 | |
| 182 Brookside Ave, Mount Vernon | 06/15/2018 | $6,000 | |
| 175 Hillside Ave, Mount Vernon | 09/19/2017 | $310,000 | |
| 529 E 3rd St, Mount Vernon | 09/02/2015 | ||
| 533 E 3rd St, Mount Vernon | 10/04/2000 | $257,000 | |
| 169 Hillside Ave, Mount Vernon | 05/08/2014 | ||
| 165 Hillside Ave, Mount Vernon | 08/17/2018 | $460,000 | |
| 159 Hillside Ave, Mount Vernon | |||
| 163 Hillside Ave, Mount Vernon | 10/11/2022 | $528,262 | |
| 545 E 3rd St, Mount Vernon | 07/08/1999 | $257,000 |
