Ansonia City property record for 11 William St, Ansonia, CT 06401
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.5 ba · 2,624 sqft · built 1883 |
| Lot Size | 0.3 acres (13,068 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $7,141 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 36061 |
| Primary APN | 36061 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 3 Stories |
| Building Area | 2,624 sqft Living Area |
| Gross Area | 3,868 sqft |
| 1st Floor Area | 775 sqft |
| Attic | Attic |
| Attic Area | 748 sqft |
| Basement Area | 775 sqft |
| Unfinished Basement | 325 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1883 |
|---|---|
| Effective Year Built | Effective 1883 |
| Architectural Style | Conventional |
| Exterior Material | Brick |
| Construction Type | Masonry / Concrete Block |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 13,068 sqft (0.3 acres) |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Gas |
| Sewer | Septic |
| Account Number | 36061 |
|---|---|
| Street Address | 11 WILLIAM ST |
| City | ANSONIA |
| State | CT |
| Zip | 06401-1917 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | B |
| Legal Block | 6 |
| Jurisdiction | ANSONIA CT |
| Township / Civil Division | ANSONIA |
| Census Block Group | 1 |
| Census Block | 1013 |
| Census Tract | 125200 |
11 William St, a single family home, is owned by an individual.
Source: Ansonia City records, as of October 20, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 420 E MAIN ST, 7, BRANFORD, CT 06405-2941 |
| 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 11 William St was $7,141, up 3.2% from the year before.
Source: Ansonia City assessment roll, as of September 25, 2026
| Type | Name |
|---|---|
| State | Connecticut |
| County Subdivision / Municipality | Ansonia City |
| Unified School District | Ansonia School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $7,141.00 (+3.18%) | $242,410 (-) Land $38,570 Building $203,840 | $420,613 (+147.88%) |
| 2025 | $6,921.00 | $242,410 Land $38,570 Building $203,840 | $169,687 Land $26,999 Building $142,688 |
| 2024 | $6,921.00 (+8.8%) | ||
| 2023 | $6,361.00 (+5.51%) | $242,410 (+51.98%) Land $38,570 Building $203,840 | |
| 2022 | $6,029.00 | $159,500 Land $48,900 Building $110,600 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 11 William St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
Source: FEMA National Flood Hazard Layer, effective January 25, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| 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 11 William St 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 | None beyond 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 | REGIONAL WATER AUTHORITY serves 418,900 people · EPA ID CT0930011 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jun 2024 |
| 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 | None 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 346 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Frontier Fiber | 7,000 / 7,000 |
| GoNetspeed Fiber | 2,000 / 2,000 |
| Xfinity Cable | 2,000 / 250 |
May also be available: Verizon.
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