Greenwich Town property record for 531 River Rd, Cos Cob, CT 06807
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3 ba · 2,310 sqft · built 1973 |
| Lot Size | 0.34 acres (14,810 sqft) |
| Owner | Company Name on File |
| Tax Bill | $8,465 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 12-2671S |
| Primary APN | 12-2671S |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 6 Rooms |
| Stories | 2 Stories |
| Building Area | 2,310 sqft Living Area |
| Basement Area | 408 sqft |
| Unfinished Basement | 408 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1973 |
|---|---|
| Effective Year Built | Effective 1975 |
| Architectural Style | Contemporary |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 14,810 sqft (0.34 acres) |
| Garage Type | Attached |
| Parking Spaces | 1 Parking Space |
| Deck Area | Deck Area |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Gas |
| Account Number | 402/020 |
|---|---|
| Street Address | 531 RIVER RD |
| City | COS COB |
| State | CT |
| Zip | 06807-1904 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R-12 |
| Legal Block | 2671/S |
| Jurisdiction | GREENWICH CT |
| Township / Civil Division | GREENWICH |
| Census Block Group | 3 |
| Census Block | 3009 |
| Census Tract | 10202 |
Source: Greenwich Town records · APN 12-2671S
Assessment roll updated June 25, 2026 · Last verified August 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 | 3217 DECKER LAKE DR, WEST VALLEY CITY, UT 84119-3284 |
| Owner Type | Company |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Feb 26, 2016 |
| Deed Sale | Feb 26, 2016 |
| Prior Sale | Mar 05, 2004 · Amount on Record |
| Deed Document Number | 20161569 |
| Deed Book / Page | 7028 / 274 |
| Record Updated | Sep 20, 2026 |
Source: Greenwich Town records · Assessment roll updated June 25, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | Connecticut |
| County Subdivision | Greenwich Town |
| Unified School District | Greenwich School District (PK - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $8,465.00 (+6.21%) | $684,950 (-) Land $515,410 Building $169,540 | $479,465 Land $360,787 Building $118,678 |
| 2023 | $7,970.00 (+0.92%) | $684,950 (-) Land $515,410 Building $169,540 | |
| 2022 | $7,897.00 | $684,950 Land $515,410 Building $169,540 |
Source: FEMA National Flood Hazard Layer as of November 28, 2025 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Wildfire Risk | Low lower than 96% of the US · lower than 94% of Connecticut |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | Direct burnable vegetation at the parcel |
Values are read at the parcel center point; lenders make the official flood determination.
Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Communications Fiber · Cable | 8,000 / 8,000 |
| Frontier Fiber | 5,000 / 5,000 |
May also be available: Verizon.
Based on FCC filings for 319 locations within half a mile of this property.
5G and 4G LTE (outdoors only)
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | AQUARION-EASTERN FAIRFIELD COUNTY private · serves 351,756 people |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jun 2025 |
| Lead | Under 1 ppb (2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 24 last 3 years |
Results are for the whole water system as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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