West Haven City property record for 521 First Ave, West Haven, CT 06516
| Property Type | Triplex |
|---|---|
| Details | 5 bd · 3 ba · 2,431 sqft · built 1910 |
| Lot Size | 0.11 acres (4,792 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $127,500 (Mar 2004) |
| Tax Bill | $8,283 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | WHAV M:0049 B:0160 L:0000 |
| Primary APN | WHAV M:0049 B:0160 L:0000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 15 Rooms |
| Units | 3 Units |
| Stories | 2 Stories |
| Building Area | 2,431 sqft Living Area |
| Gross Area | 4,386 sqft |
| 1st Floor Area | 1,026 sqft |
| Attic | Attic |
| Attic Area | 1,084 sqft |
| Basement Area | 1,026 sqft |
| Unfinished Basement | 1,026 sqft |
| Year Built | Built 1910 |
|---|---|
| Effective Year Built | Effective 1910 |
| Architectural Style | Other |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 4,792 sqft (0.11 acres) |
| Cooling System | HVAC |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Oil |
| Sewer | Septic |
| Account Number | 6479 |
|---|---|
| Street Address | 521 FIRST AVE |
| City | WEST HAVEN |
| State | CT |
| Zip | 06516-3819 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Triplex |
| Local Zoning Code | WD |
| Legal Block | 160 |
| Jurisdiction | WEST HAVEN CT |
| Township / Civil Division | WEST HAVEN |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 154500 |
521 First Ave, a triplex, is owned and occupied by two individuals who bought it in March 2004.
Source: West Haven City records, as of September 25, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 521 FIRST AVE, WEST HAVEN, CT 06516-3819 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
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 | Mar 15, 2004 · Amount on File |
| Deed Sale | Mar 15, 2004 · Amount on File |
| Prior Sale | Jun 24, 1999 · Amount on File |
| Deed Book / Page | 1324 / 573 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 521 First Ave was $8,283.
Source: West Haven City assessment roll, as of September 25, 2026
| Type | Name |
|---|---|
| State | Connecticut |
| County Subdivision / Municipality | West Haven City |
| Unified School District | West Haven School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $8,283.00 | $239,890 Land $58,450 Building $181,440 | $342,700 Land $83,500 Building $259,200 |
| 2024 | $8,283.00 (+13.33%) | ||
| 2023 | $7,309.00 (+2%) | $157,150 (-) Land $40,460 Building $116,690 | |
| 2022 | $7,166.00 | $157,150 Land $40,460 Building $116,690 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 521 First Ave in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective January 25, 2026
| 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 521 First Ave 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 | 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 703 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Frontier Fiber | 7,000 / 7,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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