33 William St, #2, Mount Vernon, NY 10552 Property Records

Westchester County and Mount Vernon City property record for 33 William St, #2, Mount Vernon, NY 10552

Property Summary

Property Type	Apartments (5+ Units)
Details	53,424 sqft · built 1954
Lot Size	1.15 acres (50,094 sqft)
Owner	2 Company Names on File
Last Sale	$27,500,000 (Feb 2017)
Tax Bill	$245,775 (2026)
Deeds & Mortgages	Apr 2018 Mortgage Dec 2019 Mortgage + 3 more
Flood Zone	Zone X (minimal risk)
APN	`550800 165.38-1161-2`

Property Details

APN / Parcel Number

Primary APN	`550800 165.38-1161-2`
Alternative APNs	`080016503811610020000000` `028780`

Interior

Units	141 Units
Stories	6 Stories
Building Area	53,424 sqft Gross Area
Basement Area	19,242 sqft
Unfinished Basement	19,242 sqft

Exterior

Year Built	Built 1954
Effective Year Built	Effective 1954
Architectural Style	Condo/Apartment
Lot Area	50,094 sqft (1.15 acres)

Location & Zoning

Account Number	028780
Street Address	33 WILLIAM ST, 2
City	MOUNT VERNON
State	NY
Zip	10552-2871
Property Category	Residential
Property Type	Residential > Multi-Unit > Apartments (5+ Units)
Legal Subdivision	MAP FLEETWOOD
Legal Block	1161
Legal Lot Number	2.000
Jurisdiction	WESTCHESTER NY
Township / Civil Division	MOUNT VERNON
Census Block Group	2
Census Block	2000
Census Tract	3800

Owner

33 William St, #2 is owned by a company that bought it in February 2017.

Source: Westchester County and Mount Vernon City records, as of October 21, 2026

Owner of Record	2 Company Names on File
Mailing Address	95 CHURCH ST, 201, WHITE PLAINS, NY 10601-1518
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 10, 2018	Deed of Trust, Mortgage · Commercial Mortgage NEW YORK COMMUNITY BANK
Dec 23, 2019	Deed of Trust, Mortgage · Commercial Mortgage NEW YORK COMMUNITY BANK
Mar 23, 2018	Loan Modification, Mortgage NEW YORK CMNTY BK
Feb 16, 2017	Bargain and Sale Deed, Transfer
Feb 7, 2017	Loan Modification, Mortgage SANTANDER BK NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Feb 16, 2017 · Amount on File
Deed Sale	Feb 16, 2017 · Amount on File
Prior Sale	Sep 25, 1996 · Amount on File
Deed Document Number	2017570313628
Prior Transfer Date	Feb 7, 2017
Prior Transfer Doc	0570313628
Record Updated	Oct 29, 2026

April 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	WESTCHESTER NY
Property Address	33 WILLIAM ST APT 2, 2, MOUNT VERNON, NY 10552-2871
Transaction Type	Mortgage
Record Updated	Jun 28, 2022
Title Company	COMMONWEALTH LAND TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0580873531
Date	Apr 10, 2018
Instrument	580873531

Lender

Name	NEW YORK COMMUNITY BANK
Type	Bank
Address	HICKSVILLE, NY 11801

Agreement

Type	Commercial Mortgage
Amount	Amount on Record

December 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	WESTCHESTER NY
Property Address	33 WILLIAM ST APT 2, 2, MOUNT VERNON, NY 10552-2871
Transaction Type	Mortgage
Record Updated	Jun 28, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0593403641
Date	Dec 23, 2019
Instrument	593403641

Lender

Name	NEW YORK COMMUNITY BANK
Type	Bank
Address	HICKSVILLE, NY 11801

Agreement

Type	Commercial Mortgage
Amount	Amount on Record

March 2018: Loan Modification, Mortgage

Document Type	Loan Modification
Jurisdiction	WESTCHESTER NY
Property Address	33 WILLIAM ST APT 2, 2, MOUNT VERNON, NY 10552-2871
Document Number	0580873535
Instrument Date	Mar 23, 2018
Transaction Type	Mortgage
Record Updated	Jul 21, 2020
Title Company	NEW YORK LAND SERVICE, INC.

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	42 OAK AVE #3RD EASTCHESTER NY 107074025, 3RD, EASTCHESTER, NY 10707-4025

Mortgage

Document Number	0580873535
Date	Apr 10, 2018
Book Page	058087/003535

Lender

Name	NEW YORK CMNTY BK
Type	Bank
Address	HICKSVILLE, NY 11801

Agreement

Amount	Amount on Record

February 2017: Bargain and Sale Deed, Transfer

Document Type	Bargain and Sale Deed
Jurisdiction	WESTCHESTER NY
Recording Date	Feb 16, 2017
Property Address	33 WILLIAM ST APT 2, 2, MOUNT VERNON, NY 10552-2871
Document Number	0570313628
Instrument Date	Feb 7, 2017
Instrument	570313628
Transaction Type	Transfer
Record Updated	Jun 28, 2022

Transaction

Amount	Amount on Record
Tax	$10,000.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	12 CALE RD, 12, AMAWALK, NY 10501-1114

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	42 OAK AVE # 3, 3, TUCKAHOE, NY 10707-4025

February 2017: Loan Modification, Mortgage

Document Type	Loan Modification
Jurisdiction	WESTCHESTER NY
Property Address	33 WILLIAM ST APT 2, 2, MOUNT VERNON, NY 10552-2871
Document Number	0570403128
Instrument Date	Feb 7, 2017
Transaction Type	Mortgage
Record Updated	Mar 18, 2019
Title Company	NEW YORK LAND SERVICE, INC.

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Tenants in Common
Address	42 OAK AVE #3RD TUCKAHOE NY 107074025, 3RD, TUCKAHOE, NY 10707-4025

Mortgage

Document Number	0570403128
Date	Feb 16, 2017
Book Page	057040/003128

Lender

Name	SANTANDER BK NA
Type	Bank
Address	200 LIBERTY ST # 17TH, NEW YORK, NY 10281-1003

Agreement

Amount	Amount on Record

Tax Assessment & Valuation

The 2026 property tax bill for 33 William St, #2 was $245,775, up 1,216.2% from the year before.

Source: Westchester County and Mount Vernon City assessment roll, as of May 14, 2026

Property Jurisdictions

Type	Name
State	New York
County	Westchester County
Municipality	Mount Vernon City
Unified School District	Mount Vernon School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026	$245,775.00 (+1,216.21%)
2025	$18,673.00	$143,000 (-) Land $33,600 Building $109,400	$7,944,445 (+6.67%) Land $1,866,667 Building $6,077,778
2024		$143,000 (-) Land $33,600 Building $109,400	$7,447,917 (-10.94%) Land $1,750,000 Building $5,697,917
2023		$143,000 Land $33,600 Building $109,400	$8,362,573 Land $1,964,912 Building $6,397,661

Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.

Flood

FEMA maps place 33 William St, #2 in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective September 18, 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 33 William St, #2 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	MOUNT VERNON WATER DEPARTMENT serves 73,893 people · EPA ID NY5903441
Water Source	Purchased surface water from several systems
Last State Inspection	Jul 2025
Lead	7 ppb (2025–2027) 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 367 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Verizon Fiber · Fixed Wireless in parts of the area	2,300 / 2,300
Spectrum Cable · Fiber in parts of the area	1,000 / 1,000

May also be available: Optimum, T-Mobile.

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