1131 E Boston Post Rd, Mamaroneck, NY 10543 Property Records

Westchester County and Rye Town property record for 1131 E Boston Post Rd, Mamaroneck, NY 10543

Property Summary

Property Type	Duplex
Details	3 bd · 5 ba · 2,436 sqft · built 1920
Lot Size	0.144 acres (6,288 sqft)
Owner	2 Individual Names on Record
Last Sale	$1,065,000 (Sep 2023)
Tax Bill	$18,394 (2025)
Deeds & Mortgages	Sep 2023 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`554803 154.44-2-45`

Property Details

APN / Parcel Number

Primary APN	`554803 154.44-2-45`
Alternative APNs	`480315404400020450000000` `00007181000`

Interior

Bedrooms	3 Beds
Full Baths	5 Baths
Half Baths	2 Half Baths
Total Rooms	8 Rooms
Stories	1 Story
Building Area	2,436 sqft Total Area
1st Floor Area	1,476 sqft
Upper Floors Area	288 sqft
Game Room	Game Room
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1920
Effective Year Built	Effective 1996
Architectural Style	Cape Cod
Exterior Material	Composition/Composite
Lot Area	6,288 sqft (0.144 acres)
Garage Type	Attached
Garage Area	340 sqft
Parking Spaces	1 Parking Space
Porch	Slab
Porch Area	384 sqft

Utilities, Heating & Cooling

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

Location & Zoning

Account Number	00007181000
Street Address	1131 E BOSTON POST RD
City	MAMARONECK
State	NY
Zip	10543-4116
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	02 - SINGL
Legal Subdivision	SHORE ACRES
Legal Block	2
Legal Lot Number	45.000
Jurisdiction	WESTCHESTER NY
Township / Civil Division	RYE
Census Block Group	3
Census Block	3013
Census Tract	7402

Owner

Source: Westchester County and Rye Town records, as of May 14, 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	1131 E BOSTON POST RD, MAMARONECK, NY 10543-4116
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Husband and Wife

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Sep 15, 2023 · Amount on Record
Deed Sale	Sep 15, 2023 · Amount on Record
Prior Sale	Sep 15, 2023 · Amount on Record
Deed Document Number	2023632353570
Record Updated	Jun 8, 2026

September 2023: Bargain and Sale Deed, Transfer

Document Type	Bargain and Sale Deed
Jurisdiction	WESTCHESTER NY
Recording Date	Sep 15, 2023
Property Address	1131 E BOSTON POST RD, MAMARONECK, NY 10543-4116
Document Number	0632353570
Map Reference	MAP 2064
Instrument Date	Sep 8, 2023
Instrument	632353570
Transaction Type	Transfer
Record Updated	Oct 6, 2023
Title Company	RECORD AND RETURN TITLE AGENCY, RECORD & RETURN TITLE AGENCY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$4,260.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	1185 HARRISON AVE, MAMARONECK, NY 10543-3802

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1131 E BOSTON POST RD, MAMARONECK, NY 10543-4116

Mortgage

Document Number	0632583135
Date	Sep 15, 2023
Instrument	632583135

Lender

Name	UNITED NATIONS FCU
Type	Credit Union

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Oct 1, 2053

Interest

Rate Type	Adjustable Rate
Rate	5.82%
Adjustable	Adjustable Rate Rider
Type Change Date	Oct 1, 2029
Change Frequency	Annually
Min Rate At Change	2.75%
Max Rate At Change	10.6%
Index	1-Year CMT
Max Rate	10.6%

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
2025	$18,394.00	$1,090,600 (+6.01%) Land $494,500 Building $596,100	$1,090,600 (+6.01%) Land $494,500 Building $596,100
2024		$1,028,800 (+3%) Land $494,500 Building $534,300	$1,028,800 (+3%) Land $494,500 Building $534,300
2023		$998,800 (+9%) Land $470,900 Building $527,900	$998,800 (+9%) Land $470,900 Building $527,900
2022		$916,300 Land $470,900 Building $445,400	$916,300 Land $470,900 Building $445,400

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
Nearest Special Flood Hazard Area	Zone AE, within 100 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 49 individual policies
Community Rating System	Class 8 (10% premium discount)
Nearby Flood Policies	88 units insured incl. 39 condo units
Nearby Flood Claims	219 (1978–2023)
Claims Outside the SFHA	154 of 219
Most Recent Claim	Sep 2023 · Severe Storm And Flooding
Claims by Event	Hurricane Sandy, Oct 2012 · 36 claims Hurricane Irene, Aug 2011 · 27 claims Coastal Storm, High Tides, Heavy Rain, & Flooding, Dec 1992 · 30 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 95% of the US · lower than 94% of New York
Wildfire Likelihood	Under 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	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 499 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