Darien Town property record for 10 Prospect Ave, Darien, CT 06820
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 5 ba · 5,338 sqft · built 1875 |
| Lot Size | 0.79 acres (34,412 sqft) |
| Owner | Trust Name on File |
| Last Sale | $3,616,000 (Jan 2026) |
| Tax Bill | $26,949 (2025) |
| Deeds & Mortgages | Jan 2026 Sale Mar 2020 Refinance |
| Flood Zone | Zone X (minimal risk) |
| APN | DARI M:15 B:3 |
| Primary APN | DARI M:15 B:3 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 5 Baths |
| Half Baths | 2 Half Baths |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 5,338 sqft Living Area |
| 1st Floor Area | 2,348 sqft |
| Basement Area | 848 sqft |
| Unfinished Basement | 1,300 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1875 |
|---|---|
| Effective Year Built | Effective 2007 |
| Architectural Style | Colonial |
| Exterior Material | Wood Siding |
| Lot Area | 34,412 sqft (0.79 acres) |
| Garage Type | Attached |
| Parking Spaces | 1 Parking Space |
| Deck Area | Deck Area |
| Cooling System | HVAC |
|---|---|
| Heating System | Hot Water |
| Heating Fuel | Oil |
| Account Number | 4793 |
|---|---|
| Street Address | 10 PROSPECT AVE |
| City | DARIEN |
| State | CT |
| Zip | 06820-3511 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R12 |
| Legal Block | 3 |
| Jurisdiction | DARIEN CT |
| Township / Civil Division | DARIEN |
| Census Block Group | 2 |
| Census Block | 2009 |
| Census Tract | 30200 |
10 Prospect Ave is owner-occupied and held in a trust since January 2026.
Source: Darien Town records, as of June 25, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 10 PROSPECT AVE, DARIEN, CT 06820-3511 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Revocable Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Jan 7, 2026 | Warranty Deed, Transfer |
| Mar 3, 2020 | Deed of Trust, Mortgage · Stand-Alone Refinance BANK OF AMERICA NA |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jan 7, 2026 · Amount on File |
| Deed Sale | Jan 7, 2026 · Amount on File |
| Prior Sale | Oct 3, 2003 · Amount on File |
| Deed Document Number | 202619 |
| Deed Book / Page | 1782 / 874 |
| Record Updated | Sep 20, 2026 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | DARIEN CT |
| Recording Date | Jan 7, 2026 |
| Property Address | 10 PROSPECT AVE, DARIEN, CT 06820-3511 |
| Document Number | 001782-874 |
| Book / Page | 1782 / 874 |
| Instrument Date | Dec 30, 2025 |
| Instrument | 19 |
| Transaction Type | Transfer |
| Record Updated | Jan 28, 2026 |
| Amount | Amount on Record |
|---|---|
| Tax | $0.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | DARIEN CT |
| Property Address | 10 PROSPECT AVE, DARIEN, CT 06820-3511 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Name | Verified Name |
|---|
| Document Number | 1673-91 |
|---|---|
| Date | Mar 3, 2020 |
| Book Page | 1673/91 |
| Name | BANK OF AMERICA NA |
|---|---|
| Type | Bank |
| Type | Stand-Alone Refinance |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Apr 1, 2050 |
The 2025 property tax bill for 10 Prospect Ave was $26,949.
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 | $26,949.00 | $1,740,900 Land $688,730 Building $1,052,170 | $1,218,630 Land $482,111 Building $736,519 |
| 2024 | $26,949.00 (+13.6%) | ||
| 2023 | $23,723.00 (+2.21%) | $1,347,150 (-) Land $491,960 Building $855,190 | |
| 2022 | $23,211.00 | $1,347,150 Land $491,960 Building $855,190 |
Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.
FEMA maps place 10 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 10 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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