| Primary address | 18 Knowles Street, Plainview |
| Zip code | 11803 |
| County | Nassau |
| Town/City | Oyster Bay |
| Village (swiss code) | None (unincorporated town) |
| Parcel ID | 12-490-43 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Tax class | Register |
| Current property tax | $14,608 |
| Building sqft | 1,470 |
| Building class | One Family Year - Round Residence (210.01) |
| Land | Primary site |
| Topography | Level |
| Acreage | 0.22 |
| Buildings on lot | 1 |
| Year built | 1957 |
| Stories | 1 |
| Style | Ranch |
| Rooms | 6 |
| Bathrooms | 2 |
| Attic | None |
| Basement | Full |
| Exterior wall | Brick |
| Heating type | Central |
| Heating system | Forced hot air |
| Fireplace | 2 |
| Zoning district | Register (See more on map) |
| School district | Plainview |
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:
18 Knowles Street, Plainview, NY 11803 was built in 1957 and has a total of 1,470 square feet.
What is the assessed value of 18 Knowles Street, Plainview, NY 11803 and the property tax paid?Assessed at $511, the tax amount paid for 18 Knowles Street, Plainview, NY 11803 is $15,615.
When was 18 Knowles Street, Plainview, NY 11803 last sold?18 Knowles Street, Plainview, NY 11803 was last sold in 09/28/1993.
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 18 Knowles Street, Plainview, including title documents, transfer conditions, mortgages and liens.
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 18 Knowles Street, Plainview, NY 11803. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2026 |
| Base tax | $15,616 |
| Current property tax | $14,609 |
| Tax class | Register |
| Market value | $511,000 |
| Assessed value | $511 |
Here's the assessment & property tax history for 18 Knowles Street, Plainview, 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 | $531,000 | $531 | 2970.267 | $15,772 | -11.07% |
| 2024 | $583,910 | $558 | 3178.305 | $17,735 | -7.56% |
| 2023 | $574,000 | $574 | 3342.412 | $19,185 | -8.87% |
| 2022 | $568,000 | $568 | 3706.543 | $21,053 | -6.63% |
| 2021 | $536,000 | $536 | 4206.654 | $22,548 | +107.89% |
The complete history of permits filed for 18 Knowles Street, Plainview, 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 18 Knowles Street, Plainview, 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 18 Knowles Street, Plainview 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) |
|---|---|---|---|---|---|
| Good Shepherd Lutheran School | NR | Private | 0 | 0.27 | |
| Hebrew Academy of Nassau-Plainview Campus | NR | Private | PK-6 | 142 | 0.40 |
| Hebrew Academy of Nassau-Plainview Campus | NR | Private | PK-6 | 142 | 0.40 |
| Plainview Old Bethpage Middle School | 8 | Public | 5-8 | 889 | 0.43 |
| Miss Sue's Nursery School and Kindergarten | NR | Private | 0 | 0.62 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Good Shepherd Lutheran School | NR | Private | 0 | 0.27 | |
| Plainview Old Bethpage Middle School | 8 | Public | 5-8 | 889 | 0.43 |
| Miss Sue's Nursery School and Kindergarten | NR | Private | 0 | 0.62 | |
| H B Mattlin Middle School | 8 | Public | 5-8 | 772 | 0.63 |
| Our Lady Of Mercy School | NR | Private | PK-8 | 195 | 1.44 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Good Shepherd Lutheran School | NR | Private | 0 | 0.27 | |
| Miss Sue's Nursery School and Kindergarten | NR | Private | 0 | 0.62 | |
| Plainview Old Bethpage JFK High School | 10 | Public | 9-12 | 1,649 | 0.93 |
| Bethpage Senior High School | 9 | Public | 9-12 | 932 | 1.51 |
| Fusion Academy Woodbury Ny | NR | Private | 6-12 | 75 | 2.22 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 18 Knowles Street, Plainview.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 12 Knowles St, Plainview | 1,470 | 08/30/2018 | $520,000 |
| 154 Grace St, Plainview | 2,194 | 06/28/2012 | $635,000 |
| 34 Knowles St, Plainview | 1,708 | 11/15/2017 | $540,000 |
| 38 Knowles St, Plainview | 1,638 | ||
| 29 Randy Ln, Plainview | 1,796 | 12/13/2012 | |
| 133 Grace St, Plainview | 2,142 | 07/22/2020 | $650,000 |
| 135 Grace St, Plainview | 2,316 | 05/27/2003 | $575,000 |
| 8 Knowles St, Plainview | 2,169 | 01/26/2005 | $600,000 |
| 148 Grace St, Plainview | 1,751 | 12/26/2015 | |
| 139 Grace St, Plainview | 1,727 | 04/27/2023 | |
| 137 Grace St, Plainview | 2,665 | 07/25/2003 | |
| 51 Randy Ln, Plainview | 1,445 | ||
| 156 Grace St, Plainview | 2,115 | 07/12/1995 | $267,000 |
| 152 Grace St, Plainview | 1,918 | 10/17/2006 | $596,000 |
| 22 Knowles St, Plainview | 1,973 | 01/19/1999 | $260,000 |
| 30 Knowles St, Plainview | 1,805 | 06/26/2008 | $460,000 |
| 53 Randy Ln, Plainview | 1,778 | 11/22/2024 | $985,000 |
| 150 Grace St, Plainview | 1,703 | ||
| 26 Knowles St, Plainview | 1,946 | 01/27/2017 | |
| 55 Randy Ln, Plainview | 1,470 | 09/26/2007 | $460,000 |