| Primary address | 100 Jefferson Avenue, Port Jefferson |
| Zip code | 11777 |
| County | Suffolk |
| Municipality | Brookhaven |
| Parcel ID | 116490 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 07/07/2017 |
| Sale price | $475,000 |
| Arm's length | Register |
| Property tax | $10,750 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.26 |
| School district | Port Jefferson |
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:
Assessed at $3,510, the tax amount paid for 100 Jefferson Avenue, Port Jefferson, NY 11777 is $10,750.
When was 100 Jefferson Avenue, Port Jefferson, NY 11777 last sold and what was the last sale price?100 Jefferson Avenue, Port Jefferson, NY 11777 was last sold in 07/07/2017 for $475,000.
View detailed property contacts like owners, building management, representatives from permits and tenants with a free account.
Create a free account to view the complete sales history for 100 Jefferson Avenue, Port Jefferson, 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 100 Jefferson Avenue, Port Jefferson, NY 11777. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Property tax | $10,750 |
| Market value | $662,264 |
| Assessed value | $3,510 |
Here's the assessment & property tax history for 100 Jefferson Avenue, Port Jefferson, 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 | $770,755 | $4,085 | 284.291 | $11,613 | +5.86% |
| 2023-2024 | $756,481 | $4,085 | 268.55 | $10,970 | +4.88% |
| 2022-2023 | $658,871 | $4,085 | 256.055 | $10,460 | +4.66% |
| 2021-2022 | $552,027 | $4,085 | 244.646 | $9,994 | +3.24% |
| 2020-2021 | $530,519 | $4,085 | 236.966 | $9,680 | -5.22% |
The complete history of permits filed for 100 Jefferson Avenue, Port Jefferson, 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.
Create a free account to unlock extended information for 100 Jefferson Avenue, Port Jefferson, 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 100 Jefferson Avenue, Port Jefferson 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 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Our Lady of Wisdom Regional School | NR | Private | PK-8 | 74 | 1.01 |
| Our Lady of Wisdom Regional School | NR | Private | PK-8 | 74 | 1.01 |
| Maryhaven Center Of Hope | NR | Private | 47 | 1.05 | |
| Port Jefferson Elementary School | 5 | Public | PK, K-5 | 364 | 1.24 |
| Port Jefferson Elementary School | 5 | Public | PK, K-5 | 364 | 1.24 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Port Jefferson Middle School | 7 | Public | 6-8 | 222 | 0.38 |
| Our Lady of Wisdom Regional School | NR | Private | PK-8 | 74 | 1.01 |
| Maryhaven Center Of Hope | NR | Private | 47 | 1.05 | |
| The Laurel Hill School | NR | Private | PK-8 | 321 | 1.48 |
| John F Kennedy Middle School | 4 | Public | 4, 6-8 | 822 | 2.10 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Earl L Vandermeulen High School | 9 | Public | 9-12 | 323 | 0.38 |
| Maryhaven Center Of Hope | NR | Private | 47 | 1.05 | |
| Ward Melville Senior High School | 10 | Public | 9-12 | 1,507 | 1.51 |
| Mount Sinai High School | 9 | Public | 9-12 | 720 | 2.61 |
| Comsewogue High School | 6 | Public | 9-12 | 1,153 | 2.96 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 100 Jefferson Avenue, Port Jefferson.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 112 Jefferson Ave, Port Jefferson | 08/30/2023 | ||
| 110 Jefferson Ave, Port Jefferson | 04/26/2021 | $7,996 | |
| 160 Washington Ave, Port Jefferson | |||
| 701 Old Post Rd, Port Jefferson | |||
| 515 High St, Port Jefferson | 02/07/2007 | ||
| 102 Jefferson Ave, Port Jefferson | |||
| 1 James Way, Port Jefferson | 08/01/2022 | $825,000 | |
| 311 Thompson St, Port Jefferson | 09/01/2021 | $682,000 | |
| 102 Washington Ave, Port Jefferson | |||
| 27 Princess Tree CT, Port Jefferson | 12/02/2024 | $10 | |
| 106 Jefferson Ave, Port Jefferson | |||
| 100 Washington Ave, Port Jefferson | 03/12/2021 | $420,000 | |
| 3 James Way, Port Jefferson | 11/14/2024 | $750,000 | |
| 200 Washington Ave, Port Jefferson | 01/03/2020 | $520,000 | |
| 106 Alice St, Port Jefferson | 06/18/2012 | ||
| 25 Mill Creek Rd, Port Jefferson | 10/05/1999 | $158,167 | |
| 104 Alice St, Port Jefferson | 07/02/2003 | $340,000 | |
| 110 Main St, Port Jefferson | 24,577 | 06/01/2022 | $7,425,000 |
| 104 Jefferson Ave, Port Jefferson | 04/28/2017 | $465,000 | |
| 108 Jefferson Ave, Port Jefferson | 10/25/2013 | $440,000 |