Darien Town property record for 12 Prospect Ave, Darien, CT 06820
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3 ba · 3,125 sqft · built 1881 |
| Lot Size | 0.79 acres (34,412 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $1,660,000 (Aug 2016) |
| Tax Bill | $18,893 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | DARI M:15 B:4 |
| Primary APN | DARI M:15 B:4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 3,125 sqft Living Area |
| 1st Floor Area | 1,690 sqft |
| Basement Area | 960 sqft |
| Unfinished Basement | 960 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1881 |
|---|---|
| Effective Year Built | Effective 2011 |
| Architectural Style | Other |
| Exterior Material | Wood Siding |
| Lot Area | 34,412 sqft (0.79 acres) |
| Deck Area | Deck Area |
| Cooling System | HVAC |
|---|---|
| Heating System | Hot Water |
| Heating Fuel | Oil |
| Account Number | 6588 |
|---|---|
| Street Address | 12 PROSPECT AVE |
| City | DARIEN |
| State | CT |
| Zip | 06820-3511 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R12 |
| Legal Block | 4 |
| Jurisdiction | DARIEN CT |
| Township / Civil Division | DARIEN |
| Census Block Group | 2 |
| Census Block | 2009 |
| Census Tract | 30200 |
12 Prospect Ave is owned and occupied by two individuals who bought it in August 2016.
Source: Darien Town records, as of June 25, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 12 PROSPECT AVE, DARIEN, CT 06820-3511 |
| 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 | 2 Names on Deed |
|---|---|
| Last Sale | Aug 18, 2016 · Amount on File |
| Deed Sale | Aug 18, 2016 · Amount on File |
| Prior Sale | May 7, 2007 · Amount on File |
| Deed Book / Page | 1593 / 618 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 12 Prospect Ave was $18,893.
Source: Darien Town assessment roll, as of June 25, 2026
| Type | Name |
|---|---|
| State | Connecticut |
| County Subdivision | Darien Town |
| Unified School District | Darien School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $18,893.00 | $1,220,450 Land $688,730 Building $531,720 | $854,315 Land $482,111 Building $372,204 |
| 2024 | $18,893.00 (+15.87%) | ||
| 2023 | $16,305.00 (+2.21%) | $925,890 (-) Land $491,960 Building $433,930 | |
| 2022 | $15,953.00 | $925,890 Land $491,960 Building $433,930 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 12 Prospect 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 12 Prospect Ave is low, with 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 80% of the US · above 55% of Connecticut |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 242 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
| Frontier Fiber | 7,000 / 7,000 |
| Verizon Fixed Wireless | 300 / 20 |
| Starlink Satellite | 280 / 30 |
May also be available: T-Mobile.
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