37 William St, New Haven, CT 06511 Property Records

New Haven City property record for 37 William St, New Haven, CT 06511

Property Summary

Property Type	Apartment House (2-4 Units)
Details	5,452 sqft · built 1880
Lot Size	0.136 acres (5,930 sqft)
Owner	Company Name on File
Last Sale	$1,375,000 (Oct 2020)
Tax Bill	$22,186 (2026)
Deeds & Mortgages	Apr 2021 Sale Oct 2020 Sale
Flood Zone	Zone X (minimal risk)
APN	`209 0591 00600`

Property Details

APN / Parcel Number

Primary APN	`209 0591 00600`
Alternative APN	`NHVN M:209 B:0591 L:00600`

Interior

Units	6 Units
Stories	3 Stories
Building Area	5,452 sqft Living Area
Gross Area	7,604 sqft
1st Floor Area	1,880 sqft
Basement Area	1,880 sqft
Unfinished Basement	1,880 sqft

Exterior

Year Built	Built 1880
Effective Year Built	Effective 1880
Architectural Style	Condo/Apartment
Exterior Material	Brick
Construction Type	Masonry / Concrete Block
Roof Type	Flat
Roof Material	Tar & Gravel
Lot Area	5,930 sqft (0.136 acres)

Utilities, Heating & Cooling

Heating System	Forced Air with A/C
Heating Fuel	Oil

Location & Zoning

Account Number	209 0591 00600
Street Address	37 WILLIAM ST
City	NEW HAVEN
State	CT
Zip	06511-0801
Property Category	Commercial
Property Type	Residential > Multi-Unit > Apartment House (2-4 Units)
Local Zoning Code	RM2
Legal Block	591
Legal Lot Number	600
Jurisdiction	NEW HAVEN CT
Township / Civil Division	NEW HAVEN
Census Block Group	1
Census Block	1014
Census Tract	142100

Owner

37 William St, a residential property, is owned by a company that bought it in October 2020.

Source: New Haven City records, as of October 20, 2026

Owner of Record	Company Name on File
Mailing Address	399 WHALLEY AVE, 103, NEW HAVEN, CT 06511-3013
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.

Deeds, Mortgages & Sale History

Date	Document
Apr 7, 2021	Warranty Deed, Transfer
Oct 29, 2020	Warranty Deed, Transfer UNKNOWN

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Oct 29, 2020 · Amount on File
Deed Sale	Oct 29, 2020 · Amount on File
Deed Document Number	20202020-08603
Deed Book / Page	10072 / 144
Record Updated	Oct 29, 2026

April 2021: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	NEW HAVEN CT
Recording Date	Apr 7, 2021
Property Address	37 WILLIAM ST, NEW HAVEN, CT 06511-0801
Document Number	010151-103
Book / Page	10151 / 103
Instrument Date	Mar 24, 2021
Instrument	2021-03251
Transaction Type	Transfer
Record Updated	Jul 18, 2024

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Arm's Length Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	399 WHALLEY AVE, NEW HAVEN, CT 06511-3008
Investor	Possibly a Property Investor

October 2020: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	NEW HAVEN CT
Recording Date	Oct 29, 2020
Property Address	37 WILLIAM ST, NEW HAVEN, CT 06511-0801
Document Number	10072-144
Book / Page	010072 / 000144
Instrument Date	Oct 22, 2020
Instrument	8603
Transaction Type	Transfer
Record Updated	Nov 17, 2020
Title Company	UNKNOWN

Transaction

Amount	Amount on Record
Tax	$1,375.00
Amount Accuracy	Confirmed
Additional	Arm's Length Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	399 WHALLEY AVE NEW HAVEN CT 065113008, NEW HAVEN, CT 06511-3008

Tax Assessment & Valuation

The 2026 property tax bill for 37 William St was $22,186, up 1.4% from the year before.

Source: New Haven City assessment roll, as of September 25, 2026

Property Jurisdictions

Type	Name
State	Connecticut
County Subdivision / Municipality	New Haven City
Unified School District	New Haven School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026	$22,186.00 (+1.43%)	$555,170 (-) Building $420,280
2025	$21,874.00	$555,170 Land $134,890 Building $420,280	$793,100 Land $192,700 Building $600,400
2024	$21,874.00 (+5.92%)
2023	$20,652.00 (-6.42%)	$555,170 (-) Land $134,890 Building $420,280
2022	$22,068.00	$555,170 Land $134,890 Building $420,280

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

FEMA maps place 37 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.

Wildfire

The area around 37 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.

Drinking Water

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

Violations Reported to EPA

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.

Internet Providers

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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