403 Beach Ave, Mamaroneck, NY 10543 Property Records

Westchester County and Rye Town property record for 403 Beach Ave, Mamaroneck, NY 10543

Property Summary

Property Type	Duplex
Details	6 bd · 2 ba · 2,472 sqft · built 1900
Lot Size	0.236 acres (10,265 sqft)
Owner	2 Individual Names on Record
Last Sale	$367,000 (Nov 1998)
Tax Bill	$24,727 (2026)
Deeds & Mortgages	Feb 2018 Loan Modification
Flood Zone	Zone X (minimal risk)
APN	`554803 154.42-2-33`

Property Details

APN / Parcel Number

Primary APN	`554803 154.42-2-33`
Alternative APNs	`480315404200020330000000` `00006039000`

Interior

Bedrooms	6 Beds
Full Baths	2 Baths
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	2,472 sqft Total Area
1st Floor Area	1,580 sqft
2nd Floor Area	892 sqft

Exterior

Year Built	Built 1900
Effective Year Built	Effective 1983
Architectural Style	Traditional
Exterior Material	Wood
Lot Area	10,265 sqft (0.236 acres)
Lot Dimensions	138 ft deep x 56 ft wide
Garage Type	Detached
Garage Area	462 sqft
Parking Spaces	2 Parking Spaces
Porch	Slab
Porch Area	329 sqft
Patio Area	468 sqft

Utilities, Heating & Cooling

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

Location & Zoning

Account Number	00006039000
Street Address	403 BEACH AVE
City	MAMARONECK
State	NY
Zip	10543-2707
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	02 - SINGL
Legal Block	2
Legal Lot Number	33.000
Jurisdiction	WESTCHESTER NY
Township / Civil Division	RYE
Census Block Group	3
Census Block	3004
Census Tract	7401

Owner

Source: Westchester County and Rye Town records, as of October 21, 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	403 BEACH AVE, MAMARONECK, NY 10543-2707
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Nov 18, 1998 · Amount on Record
Deed Sale	Nov 18, 1998 · Amount on Record
Deed Book / Page	12165 / 63
Record Updated	Oct 29, 2026

February 2018: Loan Modification, Mortgage

Document Type	Loan Modification
Jurisdiction	WESTCHESTER NY
Property Address	403 BEACH AVE, MAMARONECK, NY 10543-2707
Document Number	0582823055
Instrument Date	Feb 12, 2018
Transaction Type	Mortgage
Record Updated	Oct 22, 2018

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	403 BEACH AVE MAMARONECK NY 105432707, MAMARONECK, NY 10543-2707

Mortgage

Document Number	0582823055
Date	Oct 9, 2018
Book Page	058282/003055

Lender

Name	SPECIALIZED LN SERVICING
Type	Funding / Finance Company
Address	HIGHLANDS RANCH, CO 80129

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded

Interest

Rate	3.87%

Tax Assessment & Valuation

Source: Westchester County and Rye Town assessment roll, as of May 14, 2026

Property Jurisdictions

Type	Name
State	New York
County	Westchester County
County Subdivision	Rye Town
Municipality	Mamaroneck Village
Unified School District	Rye Neck Union Free School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026	$24,727.00 (+37.05%)
2025	$18,042.00	$1,059,600 (+5%) Land $483,100 Building $576,500	$1,059,600 (+5%) Land $483,100 Building $576,500
2024		$1,009,100 (+4%) Land $483,100 Building $526,000	$1,009,100 (+4%) Land $483,100 Building $526,000
2023		$970,300 Land $460,100 Building $510,200	$970,300 Land $460,100 Building $510,200

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective September 18, 2026 · 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 Record median of 17 policies
Community Rating System	Class 8 (10% premium discount)
Nearby Flood Policies	17 in force
Nearby Flood Claims	41 (1978–2023)
Claims Outside the SFHA	30 of 41
Most Recent Claim	Sep 2023 · Severe Storm And Flooding
Claims by Event	Remnants Of Hurricane Ida, Sep 2021 · 5 claims Hurricane Irene, Aug 2011 · 5 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

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	WESTCHESTER JOINT WATER WORKS serves 59,629 people · EPA ID NY5903435
Water Source	Surface water
Last State Inspection	Mar 2025
Lead	3 ppb (2026–2028) action level 15 ppb

Violations Reported to EPA

Water Quality	Failure to filter currently in violation since Jun 1993 Haloacetic acids resolved · Jul 2019
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 673 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	980 / 880
T-Mobile Fixed Wireless	100 / 20