Greenwich Town property record for 399 Cognewaugh Rd, Cos Cob, CT 06807
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 4,171 sqft · built 1930 |
| Lot Size | 2.07 acres (90,169 sqft) |
| Owner | Individual Name on File |
| Last Sale | $1,800,000 (Feb 2008) |
| Tax Bill | $14,466 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 08-2418 |
| Primary APN | 08-2418 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 3 Stories |
| Building Area | 4,171 sqft Living Area |
| Basement Area | 1,452 sqft |
| Unfinished Basement | 1,452 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1930 |
|---|---|
| Effective Year Built | Effective 1975 |
| Architectural Style | Colonial |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 90,169 sqft (2.07 acres) |
| Garage Type | Basement |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | Deck Area |
| Cooling System | HVAC |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Account Number | 378/010 |
|---|---|
| Street Address | 399 COGNEWAUGH RD |
| City | COS COB |
| State | CT |
| Zip | 06807-1105 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RA-2 |
| Legal Block | 2418 |
| Jurisdiction | GREENWICH CT |
| Township / Civil Division | GREENWICH |
| Census Block Group | 1 |
| Census Block | 1002 |
| Census Tract | 10202 |
399 Cognewaugh Rd is owned by an individual who bought it in February 2008.
Source: Greenwich Town records, as of October 21, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 15 E PUTNAM AVE, GREENWICH, CT 06830-5424 |
| Owner Type | Individual |
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 | Name on Deed |
|---|---|
| Last Sale | Feb 28, 2008 · Amount on File |
| Deed Sale | Feb 28, 2008 · Amount on File |
| Deed Book / Page | 5569 / 304 |
| Record Updated | Oct 29, 2026 |
The 2026 property tax bill for 399 Cognewaugh Rd was $14,466, up 11.9% from the year before.
Source: Greenwich Town assessment roll, as of June 25, 2026
| Type | Name |
|---|---|
| State | Connecticut |
| County Subdivision | Greenwich Town |
| Unified School District | Greenwich School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $14,466.00 (+11.94%) | $1,428,700 (+33.1%) Land $651,840 Building $776,860 | $2,610,020 (+247.37%) |
| 2025 | $12,923.00 | $1,073,380 Land $501,410 Building $571,970 | $751,366 Land $350,987 Building $400,379 |
| 2024 | $12,923.00 (+5.7%) | ||
| 2023 | $12,226.00 (+0.97%) | $1,073,380 (-) Land $501,410 Building $571,970 | |
| 2022 | $12,108.00 | $1,073,380 Land $501,410 Building $571,970 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 399 Cognewaugh Rd in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective November 28, 2025
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Wildfire risk around 399 Cognewaugh Rd is low, with less than 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 96% of the US · lower than 94% of Connecticut |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | Direct burnable vegetation |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: FCC Broadband Data Collection, based on 101 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 |
4G LTE (outdoors only), no 5G reported
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