56 William St, Princeton, NJ 08540 Property Records

Mercer County and Princeton property record for 56 William St, Princeton, NJ 08540

Property Summary

Property Type	Single Family Home
Details	1,944 sqft · built 1840
Lot Size	0.076 acres (3,293 sqft)
Owner	2 Individual Names on File
Last Sale	$916,712 (Aug 2023)
Tax Bill	$21,823 (2025)
Deeds & Mortgages	Aug 2023 Sale & Mortgage Apr 2021 Sale
Flood Zone	Zone X (minimal risk)
APN	`14-00047-02-00040`

Property Details

APN / Parcel Number

Primary APN	`14-00047-02-00040`
Alternative APN	`0900047 0200040`

Interior

Stories	2 Stories
Building Area	1,944 sqft Living Area

Exterior

Year Built	Built 1840
Effective Year Built	Effective 1840
Exterior Material	Brick
Construction Type	Brick
Lot Area	3,293 sqft (0.076 acres)
Lot Dimensions	54 ft deep x 61 ft wide

Location & Zoning

Street Address	56 WILLIAM ST
City	PRINCETON
State	NJ
Zip	08540-5201
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R4
Legal Description	B-47,L-40
Legal Subdivision	WILLIAM STREET
Legal Block	47.2
Legal Lot Number	40
Jurisdiction	MERCER NJ
Township / Civil Division	PRINCETON
Census Block Group	3
Census Block	3025
Census Tract	4501

Historic Designation

Source: NPS National Register of Historic Places, as of August 1, 2026

Historic District	Within the Princeton Historic District (Boundary Increase) listed 2017 · 1 contributing resources · NRIS 75001143

Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.

Owner

56 William St is owned and occupied by two individuals who bought it in August 2023.

Source: Mercer County and Princeton records, as of August 17, 2026

Owner of Record	2 Individual Names on File
Mailing Address	56 WILLIAM ST, PRINCETON, NJ 08540-5201
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Tenants by the Entirety

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
Aug 24, 2023	Deed, Transfer · Stand-Alone First Mortgage THE TRUSTEES OF PRINCETON UNIVERSIT
Apr 14, 2021	Deed, Transfer EMPIRE TITLE AND ABSTRACT AGENCY INC, EMPIRE TTL & ABSTRACT AGCY L

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 24, 2023 · Amount on File
Deed Sale	Aug 24, 2023 · Amount on File
Prior Sale	Apr 14, 2021 · Amount on File
Deed Document Number	202329199
Deed Book / Page	6532 / 776
Record Updated	Sep 20, 2026

August 2023: Deed, Transfer

Document Type	Deed
Jurisdiction	MERCER NJ
Recording Date	Aug 24, 2023
Property Address	56 WILLIAM ST, PRINCETON, NJ 08540-5201
Document Number	0000029199
Book / Page	6532 / 776
Instrument Date	Aug 22, 2023
Instrument	2023029199
Transaction Type	Transfer
Record Updated	Sep 7, 2023
Title Company	ENTERPRISE TITLE SERVICES

Transaction

Amount	Amount on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$8,612.20
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	1 NASSAU HALL, PRINCETON, NJ 08544-2001

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	56 WILLIAM ST, PRINCETON, NJ 08540-5201

Mortgage

Document Number	0000029200
Date	Aug 24, 2023
Instrument	2023029200

Lender

Name	THE TRUSTEES OF PRINCETON UNIVERSIT
Type	Government Agency

Agreement

Type	Stand-Alone First Mortgage
Amount	Amount on Record
Term	481 Months
Due	Aug 31, 2063

Mortgage

Document Number	0000029201
Date	Aug 24, 2023
Book Page	11828/205
Instrument	2023029201

Lender

Name	THE TRUSTEES OF PRINCETON UNIVERSITY
Type	Government Agency
Address	PRINCETON, NJ 08540

Agreement

Amount	Amount on Record

April 2021: Deed, Transfer

Document Type	Deed
Jurisdiction	MERCER NJ
Recording Date	Apr 14, 2021
Property Address	56 WILLIAM ST, PRINCETON, NJ 08540-5201
Document Number	0000022713
Book / Page	6437 / 913
Instrument Date	Apr 9, 2021
Instrument	2021022713
Transaction Type	Transfer
Record Updated	Aug 18, 2022
Title Company	EMPIRE TITLE AND ABSTRACT AGENCY INC, EMPIRE TTL & ABSTRACT AGCY L

Transaction

Amount	Amount on Record
Tax	$6,070.10
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	56 WILLIAM ST, 56, PRINCETON, NJ 08540-5201

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1 NASSAU HALL, PRINCETON, NJ 08544-2001

Tax Assessment & Valuation

The 2025 property tax bill for 56 William St was $21,823, up 2.6% from the year before.

Source: Mercer County and Princeton assessment roll, as of July 6, 2026

Property Jurisdictions

Type	Name
State	New Jersey
County	Mercer County
Municipality	Princeton
Unified School District	Princeton Public Schools (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$798,500 (-) Land $426,000 Building $372,500	$798,500 (-) Land $426,000 Building $372,500
2025	$21,823.00 (+2.63%)	$798,500 Land $426,000 Building $372,500	$798,500 Land $426,000 Building $372,500
2024	$21,264.00
2023		$798,500 (-) Land $426,000 Building $372,500	$798,500 (-) Land $426,000 Building $372,500
2022	$19,419.00 (-0.29%)	$798,500 Land $426,000 Building $372,500	$798,500 Land $426,000 Building $372,500
2021	$19,475.00

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

FEMA maps place 56 William St in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 2011.

Source: FEMA National Flood Hazard Layer, effective May 23, 2024 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	7 in force
Nearby Flood Claims	2 (2011–2021)
Claims Outside the SFHA	1 of 2
Most Recent Claim	Aug 2021 · river or lake flooding

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Wildfire risk around 56 William St is low, with less than 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 93% of the US · lower than 81% of New Jersey
Wildfire Likelihood	Under 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.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	NJ AMERICAN WATER - RARITAN private · serves 615,430 people · EPA ID NJ2004002
Water Source	Surface water
Last State Inspection	Jun 2024
Lead	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 566 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
Xfinity Cable	2,000 / 250
AT&T Fixed Wireless	100 / 20
T-Mobile Fixed Wireless	100 / 20

May also be available: Andrena.

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