Westchester County and Rye Town property record for 451 E Boston Post Rd, Mamaroneck, NY 10543
| Property Type | Mixed Use Commercial Office / Residential |
|---|---|
| Details | 7,909 sqft · built 1956 |
| Lot Size | 0.172 acres (7,479 sqft) |
| Owner | Company Name on File |
| Last Sale | $850,000 (Oct 2019) |
| Tax Bill | $20,719 (2025) |
| Deeds & Mortgages | Jul 2022 Mortgage Oct 2019 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 554803 154.51-1-39 |
| Primary APN | 554803 154.51-1-39 |
|---|---|
| Alternative APNs |
|
| Units | 3 Units |
|---|---|
| Stories | 2 Stories |
| Building Area | 7,909 sqft Gross Area |
| Basement Area | 5,480 sqft |
| Unfinished Basement | 5,480 sqft |
| Fire Sprinklers | Fire Sprinklers |
| Year Built | Built 1956 |
|---|---|
| Effective Year Built | Effective 1981 |
| Lot Area | 7,479 sqft (0.172 acres) |
| Lot Width | 59 ft Width |
| Cooling System | Central |
|---|---|
| Heating Fuel | Oil |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 00006819000 |
|---|---|
| Street Address | 451 E BOSTON POST RD |
| City | MAMARONECK |
| State | NY |
| Zip | 10543-3759 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Mixed Use Commercial Office / Residential |
| Local Zoning Code | C-1 COMM |
| Legal Subdivision | THE FORHAN ESTATE |
| Legal Block | 1 |
| Legal Lot Number | 39.000 |
| Jurisdiction | WESTCHESTER NY |
| Township / Civil Division | RYE |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 7402 |
Source: Westchester County and Rye Town assessment roll, 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 | Company Name on File |
|---|---|
| Mailing Address | 2900 WESTCHESTER AVE, 100, PURCHASE, NY 10577-2586 |
| Owner Type | Company |
| Vesting | Company |
| Date | Document |
|---|---|
| Jul 13, 2022 | Deed of Trust, Mortgage · Commercial Mortgage VAST BANK NA |
| Oct 30, 2019 | Grant Deed, Transfer TITLEPRO AGENCY LLC |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Oct 30, 2019 · Amount on Record |
| Deed Sale | Oct 30, 2019 · Amount on Record |
| Prior Sale | Nov 5, 2012 · Amount on Record |
| Deed Document Number | 2019592813280 |
| Record Updated | Jun 8, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | WESTCHESTER NY |
| Property Address | 451 E BOSTON POST RD, MAMARONECK, NY 10543-3759 |
| Transaction Type | Mortgage |
| Record Updated | Jul 22, 2022 |
| Title Company | TITLEPRO AGENCY LLC |
| Name | Verified Name |
|---|
| Document Number | 0621603160 |
|---|---|
| Date | Jul 13, 2022 |
| Instrument | 621603160 |
| Name | VAST BANK NA |
|---|---|
| Type | Bank |
| Address | WHITE PLAINS, NY 10601 |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount Recorded |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | WESTCHESTER NY |
| Recording Date | Oct 30, 2019 |
| Property Address | 451 E BOSTON POST RD, MAMARONECK, NY 10543-3759 |
| Document Number | 0592813280 |
| Book / Page | 059281 / 003280 |
| Instrument Date | Oct 9, 2019 |
| Transaction Type | Transfer |
| Record Updated | Nov 12, 2019 |
| Title Company | TITLEPRO AGENCY LLC |
| Amount | Amount Recorded |
|---|---|
| Tax | $3,400.00 |
| Amount Accuracy | Confirmed |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 451 E BOSTON POST RD MAMARONECK NY 105433759, MAMARONECK, NY 10543-3759 |
Source: Westchester County and Rye Town assessment roll, as of May 14, 2026
| 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) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $20,719.00 | $1,158,800 (-) Land $360,800 Building $798,000 | $1,158,800 (-) Land $360,800 Building $798,000 |
| 2024 | $1,158,800 (-) Land $360,800 Building $798,000 | $1,158,800 (-) Land $360,800 Building $798,000 | |
| 2023 | $1,158,800 Land $360,800 Building $798,000 | $1,158,800 Land $360,800 Building $798,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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 35 policies |
| Community Rating System | Class 8 (10% premium discount) |
| Nearby Flood Policies | 35 in force |
| Nearby Flood Claims | 50 (1979–2024) |
| Claims Outside the SFHA | 10 of 50 |
| Most Recent Claim | Jan 2024 · other causes |
| Claims by Event |
|
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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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 |
| 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.
Source: FCC Broadband Data Collection, based on 334 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Communications Fiber · Cable | 8,000 / 8,000 |
| Verizon Fiber · Fixed Wireless in parts of the area | 980 / 880 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
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