Westchester County and Mount Kisco Village property record for 309 Spring St, Mount Kisco, NY 10549
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,318 sqft · built 1947 |
| Lot Size | 0.178 acres (7,792 sqft) |
| Owner | 2 Trust Names on File |
| Tax Bill | $9,589 (2026) |
| Deeds & Mortgages | Jun 2025 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 555601 80.57-5-14 |
| Primary APN | 555601 80.57-5-14 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 2,318 sqft Living Area |
| 1st Floor Area | 1,282 sqft |
| Upper Floors Area | 1,036 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1947 |
|---|---|
| Effective Year Built | Effective 1947 |
| Architectural Style | Cape Cod |
| Exterior Material | Brick |
| Lot Area | 7,792 sqft (0.178 acres) |
| Lot Dimensions | 151 ft deep x 50 ft wide |
| Garage Type | Basement |
| Porch | Slab |
| Porch Area | 20 sqft |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Oil |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 052800 |
|---|---|
| Street Address | 309 SPRING ST |
| City | MOUNT KISCO |
| State | NY |
| Zip | 10549 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RS-6 |
| Legal Block | 5 |
| Legal Lot Number | 14.000 |
| Jurisdiction | WESTCHESTER NY |
| Township / Civil Division | MOUNT KISCO |
| Census Block Group | 4 |
| Census Block | 4008 |
| Census Tract | 13000 |
309 Spring St is owner-occupied and held in a trust since January 2025.
Source: Westchester County and Mount Kisco Village records, as of October 21, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 309 SPRING ST, MOUNT KISCO, NY 10549 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Revocable Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Jan 31, 2025 |
| Transfer Doc | 0000003196 |
| Record Updated | Oct 29, 2026 |
| Document Type | Bargain and Sale Deed |
|---|---|
| Jurisdiction | WESTCHESTER NY |
| Recording Date | Jun 2, 2025 |
| Property Address | 309 SPRING ST, MOUNT KISCO, NY 10549 |
| Document Number | 0643113196 |
| Map Reference | MAP 2980 |
| Instrument Date | Jan 31, 2025 |
| Instrument | 643113196 |
| Transaction Type | Transfer |
| Record Updated | Mar 31, 2026 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 305 SPRING ST, MOUNT KISCO, NY 10549-3312 |
The 2026 property tax bill for 309 Spring St was $9,589, up 789.5% from the year before.
Source: Westchester County and Mount Kisco Village assessment roll, as of May 14, 2026
| Type | Name |
|---|---|
| State | New York |
| County | Westchester County |
| County Subdivision / Municipality | Mount Kisco Village |
| Unified School District | Bedford Central School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $9,589.00 (+789.52%) | ||
| 2025 | $1,078.00 | $58,500 (-) Land $9,900 Building $48,600 | $420,561 (-53.41%) Land $71,172 Building $349,389 |
| 2024 | $58,500 (-) Land $9,900 Building $48,600 | $902,778 (+10.49%) Land $152,778 Building $750,000 | |
| 2023 | $58,500 Land $9,900 Building $48,600 | $817,039 Land $138,268 Building $678,771 | |
| 2020 | $9,836.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 309 Spring St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Claims | 7 (1979–2016) |
| Claims Outside the SFHA | 4 of 7 |
| Most Recent Claim | Feb 2016 · rainfall accumulation |
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 risk around 309 Spring 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 | Indirect 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 | MOUNT KISCO WATER DEPARTMENT serves 11,187 people · EPA ID NY5903437 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Aug 2025 |
| Lead | 1 ppb (2025) action level 15 ppb |
| Water Quality | Treatment failure resolved · Nov 2024 |
|---|---|
| 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 279 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Verizon Fiber · Fixed Wireless in parts of the area | 980 / 880 |
| Optimum Cable | 940 / 35 |
| T-Mobile Fixed Wireless | 100 / 20 |
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