Greenwich Town property record for 10 Ronald Ln, Cos Cob, CT 06807
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3.5 ba · 1,912 sqft · built 1962 |
| Lot Size | 0.3 acres (13,068 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $8,162 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 08-3872S |
| Primary APN | 08-3872S |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,912 sqft Living Area |
| Basement Area | 971 sqft |
| Unfinished Basement | 971 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1962 |
|---|---|
| Effective Year Built | Effective 1962 |
| Architectural Style | Split Level |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 13,068 sqft (0.3 acres) |
| Garage Type | Basement |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | Deck Area |
| Cooling System | HVAC |
|---|---|
| Heating System | Hot Water |
| Heating Fuel | Gas |
| Account Number | 401/086 |
|---|---|
| Street Address | 10 RONALD LN |
| City | COS COB |
| State | CT |
| Zip | 06807-1616 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R-12 |
| Legal Block | 3872/S |
| Jurisdiction | GREENWICH CT |
| Township / Civil Division | GREENWICH |
| Census Block Group | 3 |
| Census Block | 3005 |
| Census Tract | 10202 |
10 Ronald Ln is owned and occupied by an individual.
Source: Greenwich Town records, as of October 21, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 10 RONALD LN, COS COB, CT 06807-1616 |
| Occupancy | Owner Occupied |
| 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 |
|---|---|
| Record Updated | Oct 29, 2026 |
The 2026 property tax bill for 10 Ronald Ln was $8,162, up 6% 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 | $8,162.00 (+6.01%) | $778,540 (+24.98%) Land $636,370 Building $142,170 | $1,483,202 (+240.14%) |
| 2025 | $7,699.00 | $622,930 Land $485,450 Building $137,480 | $436,051 Land $339,815 Building $96,236 |
| 2024 | $7,699.00 (+6.22%) | ||
| 2023 | $7,248.00 (+0.92%) | $622,930 (-) Land $485,450 Building $137,480 | |
| 2022 | $7,182.00 | $622,930 Land $485,450 Building $137,480 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 10 Ronald Ln 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.
The area around 10 Ronald Ln has no burnable land within ember reach, so its wildfire risk is not rated.
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 | AQUARION-EASTERN FAIRFIELD COUNTY private · serves 351,756 people · EPA ID CT0150011 |
|---|---|
| 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, 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 250 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
| Verizon Fiber · Fixed Wireless in parts of the area | 980 / 880 |
May also be available: Frontier.
5G and 4G LTE (outdoors only)
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