33 Dederer St, Tappan, NY 10983 Property Records

Rockland County and Orangetown Town property record for 33 Dederer St, Tappan, NY 10983

Property Summary

Property Type	Single Family Home
Details	5 bd · 3 ba · 2,909 sqft · built 1981
Lot Size	0.23 acres (10,019 sqft)
Owner	Individual Name on File
Last Sale	$560,000 (Dec 2020)
Deeds & Mortgages	Dec 2020 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`392489 77.08-2-8`

Property Details

APN / Parcel Number

Primary APN	`392489 77.08-2-8`
Alternative APNs	`248907700800020080000000` `0026742`

Interior

Bedrooms	5 Beds
Full Baths	3 Baths
Half Baths	1 Half Bath
Stories	1 Story
Building Area	2,909 sqft Living Area
1st Floor Area	1,902 sqft
Basement Area	1,007 sqft
Finished Basement	1,007 sqft

Exterior

Year Built	Built 1981
Architectural Style	Raised Ranch
Exterior Material	Aluminum/Vinyl
Lot Area	10,019 sqft (0.23 acres)
Garage Type	Basement
Porch	Open Porch
Porch Area	140 sqft

Utilities, Heating & Cooling

Heating System	Hot Water
Heating Fuel	Gas
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Account Number	0026742
Old Parcel Number	248907700800020080000000
Street Address	33 DEDERER ST
City	TAPPAN
State	NY
Zip	10983-1711
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	RG
Legal Description	60/55/471/6
Legal Subdivision	SPARKILL ESTATES SEC B
Legal Block	2
Legal Lot Number	8.000
Jurisdiction	ROCKLAND NY
Township / Civil Division	ORANGETOWN
Census Block Group	3
Census Block	3006
Census Tract	13402

Owner

33 Dederer St is owned by an individual who bought it in December 2020.

Source: Rockland County and Orangetown Town records, as of December 26, 2025

Owner of Record	Individual Name on File
Mailing Address	16 WILLIAM ST, SPARKILL, NY 10976-1220
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	Name on Deed
Last Sale	Dec 18, 2020 · Amount on File
Deed Sale	Dec 18, 2020 · Amount on File
Deed Document Number	0202038879
Deed Book / Page	2020 / 38879
Record Updated	Jun 8, 2026

December 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ROCKLAND NY
Recording Date	Dec 18, 2020
Property Address	33 DEDERER ST, TAPPAN, NY 10983-1711
Document Number	0000038879
Instrument Date	Oct 8, 2020
Instrument	38879
Transaction Type	Transfer
Record Updated	Jan 29, 2021
Title Company	FIRST AMERICAN TITLE, FIRST AMERICAN TITLE INSURANCE

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$2,240.00
Amount Accuracy	Confirmed
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	16 WILLIAM ST SPARKILL NY 109761220, SPARKILL, NY 10976-1220

Mortgage

Document Number	38880
Date	Dec 18, 2020
Instrument	38880

Lender

Name	KEYBANK USA
Type	Bank
Address	CLEVELAND, OH 44114-1306

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Dec 17, 2050

Tax Assessment & Valuation

Source: Rockland County and Orangetown Town assessment roll, as of May 31, 2024

Property Jurisdictions

Type	Name
State	New York
County	Rockland County
County Subdivision	Orangetown Town
Unified School District	South Orangetown Central School District (PK - 12)

Tax Bill & Assessment History

Year	Assessed Value	Assessed Market Value
2024	$206,500 (-) Land $44,500 Building $162,000	$604,863 (+4.36%) Land $130,346 Building $474,517
2023	$206,500 Land $44,500 Building $162,000	$579,568 Land $124,895 Building $454,673

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 33 Dederer St in Zone X, an area of minimal flood risk, though there have been 33 flood claims nearby since 1979.

Source: FEMA National Flood Hazard Layer, effective August 19, 2025 · 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
Flood Insurance Cost	Premium on File median of 19 policies
Nearby Flood Policies	19 in force
Nearby Flood Claims	33 (1979–2025)
Claims Outside the SFHA	12 of 33
Most Recent Claim	Jan 2025 · other causes
Claims by Event	Remnants Of Hurricane Ida, Sep 2021 · 12 claims Hurricane Irene, Aug 2011 · 4 claims Severe Storms And Inland And Coastal Flooding, Apr 2007 · 5 claims

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 33 Dederer St is low, with 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 80% of the US · above 54% of New York
Wildfire Likelihood	0.01% annual chance
Exposure	Direct burnable vegetation

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	VEOLIA WATER NEW YORK private · serves 270,000 people · EPA ID NY4303673
Water Source	Surface water
Last State Inspection	Mar 2023
Lead	3 ppb (2026) 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 255 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Optimum Fiber · Cable	8,000 / 8,000
Verizon Fiber	980 / 880
T-Mobile Fixed Wireless	100 / 20