New Haven City property record for 91 William St, New Haven, CT 06511
| Property Type | Commercial Building, Warehouse, Showroom |
|---|---|
| Details | 2,810 sqft · built 1900 |
| Lot Size | 0.201 acres (8,770 sqft) |
| Owner | Company Name on File |
| Last Sale | $350,000 (Jan 2009) |
| Tax Bill | $13,139 (2026) |
| Deeds & Mortgages | Mar 2022 Mortgage Mar 2022 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 209 0590 02000 |
| Primary APN | 209 0590 02000 |
|---|---|
| Alternative APN |
|
| Stories | 2 Stories |
|---|---|
| Building Area | 2,810 sqft Total Area |
| Gross Area | 4,338 sqft |
| 1st Floor Area | 1,441 sqft |
| Basement Area | 1,441 sqft |
| Unfinished Basement | 1,441 sqft |
| Year Built | Built 1900 |
|---|---|
| Effective Year Built | Effective 1900 |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 8,770 sqft (0.201 acres) |
| Cooling System | HVAC |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Account Number | 209 0590 02000 |
|---|---|
| Street Address | 91 WILLIAM ST |
| City | NEW HAVEN |
| State | CT |
| Zip | 06511-4940 |
| Property Category | Commercial |
| Property Type | Commercial > Retail > Commercial Building, Warehouse, Showroom |
| Local Zoning Code | RM2 |
| Legal Block | 590 |
| Legal Lot Number | 2000 |
| Jurisdiction | NEW HAVEN CT |
| Township / Civil Division | NEW HAVEN |
| Census Block Group | 1 |
| Census Block | 1014 |
| Census Tract | 142100 |
91 William St, a commercial property, is owned by a company that bought it in January 2009.
Source: New Haven City records, as of October 20, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 91 WILLIAM ST, NEW HAVEN, CT 06511-4940 |
| 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.
| Date | Document |
|---|---|
| Mar 29, 2022 | Deed of Trust, Mortgage · Commercial Mortgage NEW HAVEN BANK |
| Mar 29, 2022 | Deed of Trust, Mortgage · Commercial Mortgage NEW HAVEN BANK |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jan 30, 2009 · Amount on File |
| Deed Sale | Jan 30, 2009 · Amount on File |
| Deed Book / Page | 8335 / 316 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | NEW HAVEN CT |
| Property Address | 91 WILLIAM ST, NEW HAVEN, CT 06511-4940 |
| Transaction Type | Mortgage |
| Record Updated | Apr 14, 2022 |
| Name | Verified Name |
|---|
| Document Number | 010355-326 |
|---|---|
| Date | Mar 29, 2022 |
| Book Page | 10355/326 |
| Instrument | 2022-03257 |
| Name | NEW HAVEN BANK |
|---|
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount on Record |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | NEW HAVEN CT |
| Property Address | 91 WILLIAM ST, NEW HAVEN, CT 06511-4940 |
| Transaction Type | Mortgage |
| Record Updated | Apr 14, 2022 |
| Name | Verified Name |
|---|
| Document Number | 00010356-1 |
|---|---|
| Date | Mar 29, 2022 |
| Book Page | 10356/1 |
| Instrument | 2022-03258 |
| Name | NEW HAVEN BANK |
|---|
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount on Record |
The 2026 property tax bill for 91 William St was $13,139, up 1.4% from the year before.
Source: New Haven City assessment roll, as of September 25, 2026
| Type | Name |
|---|---|
| State | Connecticut |
| County Subdivision / Municipality | New Haven City |
| Unified School District | New Haven School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $13,139.00 (+1.43%) | $328,790 (-) Land $144,200 Building $184,590 | |
| 2025 | $12,954.00 | $328,790 Land $144,200 Building $184,590 | $469,700 Land $206,000 Building $263,700 |
| 2024 | $12,954.00 (+5.91%) | ||
| 2023 | $12,231.00 (-6.41%) | $328,790 (-) Land $144,200 Building $184,590 | |
| 2022 | $13,069.00 | $328,790 Land $144,200 Building $184,590 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 91 William St 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 91 William St 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 346 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 |
May also be available: T-Mobile.
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