Nassau County and Oyster Bay Town property record for 12 Knowles St, Plainview, NY 11803
| Property Type | Single Family Home |
|---|---|
| Details | 2 ba · 1,470 sqft · built 1957 |
| Lot Size | 0.278 acres (12,097 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $520,000 (Sep 2018) |
| Tax Bill | $17,108 (2025) |
| Deeds & Mortgages | Sep 2018 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 12-490-00-0042 |
| Primary APN | 12-490-00-0042 |
|---|---|
| Alternative APNs |
|
| Full Baths | 2 Baths |
|---|---|
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,470 sqft Living Area |
| Gross Area | 1,869 sqft |
| 1st Floor Area | 1,470 sqft |
| Game Room | Game Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1957 |
|---|---|
| Effective Year Built | Effective 1957 |
| Architectural Style | Ranch |
| Exterior Material | Brick |
| Roof Material | Other |
| Lot Area | 12,097 sqft (0.278 acres) |
| Lot Dimensions | 141 ft deep x 112 ft wide |
| Garage Type | Attached |
| Garage Area | 399 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Open Frame Porch |
| Porch Area | 190 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Oil |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 12490 00420 |
|---|---|
| Street Address | 12 KNOWLES ST |
| City | PLAINVIEW |
| State | NY |
| Zip | 11803-3947 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | TOWN #3 SCH DIST 019 |
| Legal Block | 490 |
| Legal Lot Number | 42 |
| Jurisdiction | NASSAU NY |
| Township / Civil Division | OYSTER BAY |
| Census Block Group | 2 |
| Census Block | 2009 |
| Census Tract | 519704 |
Source: Nassau County and Oyster Bay Town records, as of June 17, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 12 KNOWLES ST, PLAINVIEW, NY 11803-3947 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants with Right of Survivorship |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 10, 2018 · Amount on Record |
| Deed Sale | Sep 10, 2018 · Amount on Record |
| Deed Document Number | 2018-080919 |
| Deed Book / Page | 13704 / 91 |
| Record Updated | Sep 20, 2026 |
| Document Type | Bargain and Sale Deed |
|---|---|
| Jurisdiction | NASSAU NY |
| Recording Date | Sep 10, 2018 |
| Property Address | 12 KNOWLES ST, PLAINVIEW, NY 11803-3947 |
| Document Number | 0137040091 |
| Book / Page | 13704 / 91 |
| Map Reference | MAP 6444 |
| Instrument Date | Aug 30, 2018 |
| Instrument | 2018-080919 |
| Transaction Type | Transfer |
| Record Updated | May 14, 2021 |
| Title Company | FIDELITY NATIONAL TITLE |
| Amount | Amount Recorded |
|---|---|
| Tax | $2,080.00 |
| Amount Accuracy | Calculated from Transfer Tax |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 2 HOPE DR, PLAINVIEW, NY 11803-5626 |
Source: Nassau County and Oyster Bay Town assessment roll, as of June 17, 2026
| Type | Name |
|---|---|
| State | New York |
| County | Nassau County |
| County Subdivision | Oyster Bay Town |
| Unified School District | Plainview-Old Bethpage Central School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $588 (-) Land $305 Building $283 | $588,000 (-) | |
| 2025 | $17,108.00 (+16.07%) Homeowner's exemption | $588 (-) Land $305 Building $283 | $588,000 (-) |
| 2023 | $14,740.00 Additional exemption filed | $588 Land $305 Building $283 | $588,000 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
Source: FEMA National Flood Hazard Layer, effective April 5, 2023 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 6 in force |
| Nearby Flood Claims | 7 (1978–2012) |
| Claims Outside the SFHA | 5 of 7 |
| Most Recent Claim | Dec 2012 · rainfall accumulation |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | PLAINVIEW WD public/private · serves 34,000 people · EPA ID NY2902845 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Jun 2024 |
| Lead | Under 1 ppb (2021–2023) action level 15 ppb |
| Water Quality | Tetrachloroethylene resolved · Jul 2017 cis-1,2-Dichloroethylene resolved · Jul 2017 |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 607 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
| Verizon Fiber · Fixed Wireless in parts of the area | 2,300 / 2,300 |
| T-Mobile Fixed Wireless | 100 / 20 |
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