Greenwich Town property record for 511 River Rd, Cos Cob, CT 06807 · Last verified July 2026
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.5 ba · 1,546 sqft · built 1957 |
| Lot Size | 0.32 acres (13,939 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $7,887 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 12-2207S |
| Primary APN | 12-2207S |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,546 sqft Living Area |
| Basement Area | 800 sqft |
| Unfinished Basement | 800 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1957 |
|---|---|
| Effective Year Built | Effective 1970 |
| Architectural Style | Split Level |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 13,939 sqft (0.32 acres) |
| Garage Type | Basement |
| Parking Spaces | 1 Parking Space |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Oil |
| Account Number | 403/125 |
|---|---|
| Street Address | 511 RIVER RD |
| City | COS COB |
| State | CT |
| Zip | 06807-1904 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Block | 2207/S |
| Jurisdiction | GREENWICH CT |
| Township / Civil Division | GREENWICH |
| Census Block Group | 3 |
| Census Block | 3009 |
| Census Tract | 10202 |
Source: Greenwich Town records · APN 12-2207S
Assessment roll updated June 25, 2026 · Last verified July 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 511 RIVER RD, COS COB, CT 06807-1904 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Verified Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
Source: Greenwich Town records · Assessment roll updated June 25, 2026 · Last verified July 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 | $7,887.00 | $638,120 (-) Land $510,440 Building $127,680 | $446,684 Land $357,308 Building $89,376 |
| 2024 | $7,887.00 (+6.22%) | ||
| 2023 | $7,425.00 (+0.91%) | $638,120 (-) Land $510,440 Building $127,680 | |
| 2022 | $7,358.00 | $638,120 Land $510,440 Building $127,680 |
Source: FEMA National Flood Hazard Layer, County delivery 09001C updated November 28, 2025 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Special Flood Hazard Area | No |
| Wildfire Risk | Low above 4% of the US · above 6% of Connecticut |
|---|---|
| Wildfire Likelihood | Less than 1 in 10,000 per year |
| Exposure | Direct burnable vegetation at the parcel |
Values are read at the parcel center point; lenders make the official flood determination.
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