8 Knowles St, Plainview, NY 11803 Property Records

Nassau County and Oyster Bay Town property record for 8 Knowles St, Plainview, NY 11803 · Last verified June 2026

Property Summary

Property Type	Single Family Home
Details	2.5 ba · 2,169 sqft · built 1957
Lot Size	0.209 acres (9,100 sqft)
Owner	2 Individual Names on File
Last Sale	$600,000 (Feb 2005)
Tax Bill	$19,633 (2025)
Flood Zone	Zone X (minimal risk)
APN	`12-490-00-0041`

Property Details

APN / Parcel Number

Primary APN	`12-490-00-0041`
Alternative APNs	`2489-12-490-00-0041-0` `12490000041000000000` `282489 12.-490-41` `12490 00410`

Interior

Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	6 Rooms
Stories	1 Story
Building Area	2,169 sqft Living Area
Gross Area	2,397 sqft
1st Floor Area	1,350 sqft
Basement Area	338 sqft
Finished Basement	338 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1957
Effective Year Built	Effective 1957
Architectural Style	Split Level
Exterior Material	Aluminum/Vinyl
Roof Material	Other
Lot Area	9,100 sqft (0.209 acres)
Lot Dimensions	140 ft deep x 83 ft wide
Garage Type	Attached
Garage Area	228 sqft
Parking Spaces	1 Parking Space

Exterior Amenities

Porch	Open Frame Porch
Porch Area	96 sqft
Patio Area	96 sqft
Balcony Area	90 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Heating Fuel	Oil
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Account Number	12490 00410
Street Address	8 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	41
Jurisdiction	NASSAU NY
Township / Civil Division	OYSTER BAY
Census Block Group	2
Census Block	2009
Census Tract	519704

Owner

Source: Nassau County and Oyster Bay Town records · APN 12-490-00-0041

Assessment roll updated June 17, 2026 · Last verified June 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 File
Mailing Address	8 KNOWLES ST, PLAINVIEW, NY 11803-3947
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Feb 24, 2005 · Amount on Record
Deed Sale	Feb 24, 2005 · Amount on Record
Deed Book / Page	11918 / 339
Record Updated	Sep 20, 2026

Tax Assessment & Valuation

Source: Nassau County and Oyster Bay Town records · Assessment roll updated June 17, 2026 · Last verified June 2026

Property Jurisdictions

Type	Name
State	New York
County	Nassau County
County Subdivision	Oyster Bay Town
Unified School District	Plainview-Old Bethpage Central School District (KG - 12)

Tax Bill & Assessment History

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.

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$642 (-7.36%) Land $310 Building $332	$642,000 (-7.36%)
2025	$19,633.00 (+13.18%)
2023	$17,347.00 Additional exemption filed	$693 Land $335 Building $358	$693,000

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Nassau County (36059C), updated April 5, 2023 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 360595197042, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Special Flood Hazard Area	No
Flood Hazard	Minimal
500-Year Floodplain	No
Flood Insurance Cost	Premium on Record median of 6 individual NFIP policies nearby
Nearby Flood Policies	6 in force 6 of 6 on primary residences
Nearby Flood Claims	7 (1978–2012)
Claims Outside the SFHA	5 of 7
Most Recent Claim	Dec 2012, rainfall accumulation

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None beyond ember reach

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.