21 Dorothea St, Plainview, NY 11803 Property Records

Nassau County and Oyster Bay Town property record for 21 Dorothea St, Plainview, NY 11803

Property Summary

Property Type	Single Family Home
Details	2.5 ba · 2,604 sqft · built 1956
Lot Size	0.161 acres (7,000 sqft)
Owner	2 Individual Names on File
Last Sale	$515,000 (Oct 2005)
Tax Bill	$16,174 (2025)
Deeds & Mortgages	Apr 2023 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`47-063-00-0009`

Property Details

APN / Parcel Number

Primary APN	`47-063-00-0009`
Alternative APNs	`2489-47-063-00-0009-0` `47063000009000000000` `282489 47.-63-9` `47063 00090`

Interior

Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	6 Rooms
Stories	1 Story
Building Area	2,604 sqft Living Area
1st Floor Area	1,251 sqft
Basement Area	430 sqft
Finished Basement	430 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1956
Effective Year Built	Effective 1956
Architectural Style	Split Level
Exterior Material	Aluminum/Vinyl
Construction Type	Frame
Roof Material	Other
Lot Area	7,000 sqft (0.161 acres)
Lot Dimensions	100 ft deep x 70 ft wide
Garage Type	Basement
Parking Spaces	1 Parking Space

Exterior Amenities

Porch	Open Frame Porch
Porch Area	35 sqft
Deck Area	60 sqft
Patio Area	325 sqft

Utilities, Heating & Cooling

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

Location & Zoning

Account Number	47063 00090
Street Address	21 DOROTHEA ST
City	PLAINVIEW
State	NY
Zip	11803-6211
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	TOWN #3 SCH DIST 021
Legal Block	63
Legal Lot Number	9
Jurisdiction	NASSAU NY
Township / Civil Division	OYSTER BAY
Census Block Group	3
Census Block	3010
Census Tract	519802

Owner

21 Dorothea St is owned and occupied by two individuals who bought it in October 2005.

Source: Nassau County and Oyster Bay Town records, as of June 17, 2026

Owner of Record	2 Individual Names on File
Mailing Address	21 DOROTHEA ST, PLAINVIEW, NY 11803-6211
Occupancy	Owner Occupied
Owner Type	Individual

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Oct 5, 2005 · Amount on File
Deed Sale	Oct 5, 2005 · Amount on File
Deed Book / Page	12019 / 333
Record Updated	Sep 20, 2026

April 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	NASSAU NY
Property Address	21 DOROTHEA ST, PLAINVIEW, NY 11803-6211
Transaction Type	Mortgage
Record Updated	May 3, 2023
Title Company	CHICAGO TITLE COMPANY, CHICAGO TITLE INSURANCE CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	21 DOROTHEA ST, PLAINVIEW, NY 11803-6211

Mortgage

Document Number	M471220653
Date	Apr 25, 2023
Book Page	M47122/653
Instrument	2023-24215

Lender

Name	BETHPAGE FCU
Type	Credit Union
Address	BETHPAGE, NY 11714

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	May 1, 2053

Interest

Rate Type	Adjustable Rate
Rate	5.12%
Type Change Date	May 1, 2030
Change Frequency	Annually
Min Rate At Change	2.5%
Max Rate At Change	10.1%
Index	1-Year T-Bill
Max Rate	11.1%

Tax Assessment & Valuation

The 2025 property tax bill for 21 Dorothea St was $16,174 with a senior citizen's exemption.

Source: Nassau County and Oyster Bay Town assessment roll, as of June 17, 2026

Property Jurisdictions

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

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$595 Land $248 Building $347	$595,000
2025	$16,174.00
2023	$15,509.00 Homeowner's exemption	$682 Land $284 Building $398	$682,000

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.

Flood

FEMA maps place 21 Dorothea St in Zone X, an area of minimal flood risk, though there have been 3 flood claims nearby since 1979.

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	5 in force
Nearby Flood Claims	3 (1979–2019)
Claims Outside the SFHA	3 of 3
Most Recent Claim	Dec 2019 · other causes

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.

Wildfire

Wildfire risk around 21 Dorothea St is low, with less than a 0.01% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 99.1% of the US · lower than 99.2% of New York
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	BETHPAGE WD serves 33,000 people · EPA ID NY2902817
Water Source	Groundwater
Last State Inspection	Jul 2025
Lead	Under 1 ppb (2021–2023) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
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.

Internet Providers

Source: FCC Broadband Data Collection, based on 625 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