| Primary address | 14 Mary Avenue, Ronkonkoma |
| Zip code | 11779 |
| County | Suffolk |
| Municipality | Brookhaven |
| Parcel ID | 6202640 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Property tax | $7,064 |
| Building class | Converted Residence (483) |
| Acreage | 0.24 |
| School district | Sachem |
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:
The current market value is $377,359.
View detailed property contacts like owners, building management, representatives from permits and tenants with a free account.
| Listing type | For Sale |
|---|---|
| Listing date | 02/23/2021 |
| Last updated | 05/26/2026 |
| Lot size | 9.5 Acre |
14 Mary Avenue presents a fantastic opportunity for a developer to invest in one of Long Island’s hottest transit oriented markets.
In Contract
Create a free account to view the complete sales history for 14 Mary Avenue, Ronkonkoma, including title documents, transfer conditions, mortgages and liens.
Access detailed property tax data for 14 Mary Avenue, Ronkonkoma, NY 11779. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Property tax | $7,064 |
| Market value | $377,359 |
| Assessed value | $2,000 |
Here's the assessment & property tax history for 14 Mary Avenue, Ronkonkoma, 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 |
|---|---|---|---|---|---|
| 2024-2025 | $377,359 | $2,000 | 338.342 | $6,767 | -17.92% |
| 2023-2024 | $370,370 | $2,000 | 412.188 | $8,244 | +27.16% |
| 2022-2023 | $322,581 | $2,000 | 324.157 | $6,483 | +3.72% |
| 2021-2022 | $270,270 | $2,000 | 312.54 | $6,251 | +2.63% |
| 2020-2021 | $259,740 | $2,000 | 304.524 | $6,090 | +1.29% |
The complete history of permits filed for 14 Mary Avenue, Ronkonkoma, including new construction or demolition permits, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.
| Total population | 38,206 |
| Median age | 39.7 |
| Average household income | $130,603 |
| Family households | 67.5% |
| Occupied housing units | 13,215 |
| Owner occupied units | 75.7% |
| Average number of people per household | 2.86 |
| Median year structure built | 1971 |
| Median value for units with a mortgage | $496,500 |
| Median value for units without a mortgage | $461,300 |
Create a free account to unlock extended information for 14 Mary Avenue, Ronkonkoma, 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 14 Mary Avenue, Ronkonkoma to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.
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Here are the neighbors for 14 Mary Avenue, Ronkonkoma.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 53 Mary Ave, Ronkonkoma | 2,016 | 10/25/2002 | $330,000 |
| 139 Lorraine CT, Ronkonkoma | 2,009 | 04/30/2015 | |
| 51 Mary Ave, Ronkonkoma | 1,617 | 07/03/2007 | $370,000 |
| 137 Lorraine CT, Ronkonkoma | 1,472 | 05/20/2021 | $435,000 |
| 11 Amherst Rd, Ronkonkoma | 03/09/2022 | $500,000 | |
| 52 Mary Ave, Ronkonkoma | 1,980 | 10/09/2023 | |
| 15 Huxley Ln, Ronkonkoma | 1,296 | 07/11/2022 | $510,000 |
| 22 Huxley Ln, Ronkonkoma | 1,296 | 08/05/2025 | |
| 55 Mary Ave, Ronkonkoma | 2,004 | 11/02/2017 | $10 |
| 135 Lorraine CT, Ronkonkoma | 1,992 | ||
| 10 Huxley Ln, Ronkonkoma | 1,200 | 09/09/1997 | $135,000 |
| 133 Lorraine CT, Ronkonkoma | 1,416 | 10/23/2018 | |
| 16 Mary Ave, Ronkonkoma | 1,808 | 07/23/2018 | $237,000 |
| 149 Union Ave, Ronkonkoma | 3,768 | 08/24/2023 | $960,000 |
| 22 Mary Ave, Ronkonkoma | 1,864 | 11/17/2010 | $264,000 |
| 23 Huxley Ln, Ronkonkoma | 1,906 | 02/08/2022 | $515,000 |
| 19 Huxley Ln, Ronkonkoma | 1,625 | 05/15/2024 | $605,000 |
| 6 Huxley Ln, Ronkonkoma | 1,776 | ||
| 20 Mary Ave, Ronkonkoma | 1,236 | ||
| 54 Mary Ave, Ronkonkoma | 1,128 | 06/28/2021 | $435,000 |