Westchester County and Mamaroneck Town property record for 1237 Knickerbocker Ave, Mamaroneck, NY 10543
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3 ba · 2,176 sqft · built 1927 |
| Lot Size | 0.28 acres (12,197 sqft) |
| Owner | 2 Individual Names on Record |
| Tax Bill | $19,033 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 553203 8-15-459 |
| Primary APN | 553203 8-15-459 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Stories | 2 Stories |
| Building Area | 2,176 sqft Living Area |
| 1st Floor Area | 1,108 sqft |
| 2nd Floor Area | 1,068 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1927 |
|---|---|
| Effective Year Built | Effective 1927 |
| Architectural Style | Traditional |
| Exterior Material | Stucco |
| Lot Area | 12,197 sqft (0.28 acres) |
| Patio Area | 150 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Hot Water |
| Heating Fuel | Oil |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 545200 |
|---|---|
| Street Address | 1237 KNICKERBOCKER AVE |
| City | MAMARONECK |
| State | NY |
| Zip | 10543-1418 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R-5 |
| Legal Block | 459 |
| Jurisdiction | WESTCHESTER NY |
| Township / Civil Division | MAMARONECK |
| Census Block Group | 3 |
| Census Block | 3007 |
| Census Tract | 7300 |
Source: Westchester County and Mamaroneck Town records, as of October 21, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 1237 KNICKERBOCKER AVE, MAMARONECK, NY 10543-1418 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Record Updated | Oct 29, 2026 |
Source: Westchester County and Mamaroneck Town assessment roll, as of May 14, 2026
| Type | Name |
|---|---|
| State | New York |
| County | Westchester County |
| County Subdivision | Mamaroneck Town |
| Municipality | Mamaroneck Village |
| Unified School District | Mamaroneck Union Free School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $19,033.00 (+40.46%) | ||
| 2025 | $13,550.00 | $864,000 (+3.97%) Land $216,000 Building $648,000 | $864,000 (+3.97%) Land $216,000 Building $648,000 |
| 2024 | $831,000 (+5.06%) Land $216,000 Building $615,000 | $831,000 (+5.06%) Land $216,000 Building $615,000 | |
| 2023 | $791,000 Land $216,000 Building $575,000 | $791,000 Land $216,000 Building $575,000 |
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 31 policies |
| Community Rating System | Class 8 (10% premium discount) |
| Nearby Flood Policies | 31 in force |
| Nearby Flood Claims | 28 (2011–2024) |
| Most Recent Claim | Mar 2024 · river or lake flooding |
| 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 |
|---|
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
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 458 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 |
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