Greenwich Town property record for 270 Lake Ave, Greenwich, CT 06830
| Property Type | Public School (Administration, Campus, Dorms, Instruction) |
|---|---|
| Details | 6,318 sqft · built 1920 |
| Lot Size | 16.2 acres (708,721 sqft) |
| Owner | Company Name on File |
| Flood Zone | Zone X (minimal risk) |
| APN | 10-4028S |
| Primary APN | 10-4028S |
|---|---|
| Alternative APNs |
|
| Total Rooms | 4 Rooms |
|---|---|
| Stories | 3 Stories |
| Building Area | 6,318 sqft Total Area |
| Basement Area | 12,604 sqft |
| Unfinished Basement | 12,604 sqft |
| Elevator | Elevator |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1920 |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 708,721 sqft (16.2 acres) |
| Deck Area | Deck Area |
| Total Buildings | 9 Buildings |
| Heating System | Hot Water |
|---|
| Account Number | 246/060 |
|---|---|
| Street Address | 270 LAKE AVE |
| City | GREENWICH |
| State | CT |
| Zip | 06830-4518 |
| Property Category | Public Works |
| Property Type | Public Works > Public School (Administration, Campus, Dorms, Instruction) |
| Local Zoning Code | RA-2 |
| Legal Block | 4028/S |
| Jurisdiction | GREENWICH CT |
| Township / Civil Division | GREENWICH |
| Census Block Group | 3 |
| Census Block | 3013 |
| Census Tract | 10300 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Individually Listed | Rosemary Hall listed 1998 · 17 contributing resources · NRIS 90001137 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
270 Lake Ave, a public works property, is owned by a company.
Source: Greenwich Town records, as of October 21, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 100 MAHER AVE, GREENWICH, CT 06830-5618 |
| Owner Type | Company |
| Vesting | Company |
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 |
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 | Assessed Value | Assessed Market Value |
|---|---|---|
| 2026 | $39,727,030 (+127.01%) Land $16,648,520 Building $23,078,510 | |
| 2025 | $17,500,000 Land $14,000,000 Building $3,500,000 | $12,250,000 Land $9,800,000 Building $2,450,000 |
| 2023 | $44,777,740 (-) Land $21,351,610 Building $23,426,130 | |
| 2022 | $44,777,740 Land $21,351,610 Building $23,426,130 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 270 Lake Ave 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 270 Lake Ave 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 95% of the US · lower than 92% 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: 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 124 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 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
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