Mercer County and Princeton property record for 40 William St, Princeton, NJ 08540
| Property Type | Single Family Home |
|---|---|
| Details | 960 sqft · built 1930 |
| Lot Size | 0.036 acres (1,581 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $11,867 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 14-00047-01-00030 |
| Primary APN | 14-00047-01-00030 |
|---|---|
| Alternative APN |
|
| Stories | 2 Stories |
|---|---|
| Building Area | 960 sqft Living Area |
| Year Built | Built 1930 |
|---|---|
| Effective Year Built | Effective 1930 |
| Construction Type | Frame |
| Lot Area | 1,581 sqft (0.036 acres) |
| Lot Dimensions | 79 ft deep x 20 ft wide |
| Street Address | 40 WILLIAM ST |
|---|---|
| City | PRINCETON |
| State | NJ |
| Zip | 08540-5238 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R4 |
| Legal Block | 47.1 |
| Legal Lot Number | 30 |
| Jurisdiction | MERCER NJ |
| Township / Civil Division | PRINCETON |
| Census Block Group | 3 |
| Census Block | 3008 |
| Census Tract | 4501 |
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.
Source: Mercer County and Princeton records, as of July 6, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 600 ALEXANDER RD, 200, PRINCETON, NJ 08540-6081 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
Source: Mercer County and Princeton assessment roll, as of July 6, 2026
| Type | Name |
|---|---|
| State | New Jersey |
| County | Mercer County |
| Municipality | Princeton |
| Unified School District | Princeton Public Schools (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $434,200 (-) Land $356,500 Building $77,700 | $434,200 (-) Land $356,500 Building $77,700 | |
| 2025 | $11,867.00 (+2.64%) | $434,200 (-) Land $356,500 Building $77,700 | $434,200 (-) Land $356,500 Building $77,700 |
| 2024 | $11,562.00 (+9.5%) | ||
| 2023 | $434,200 Land $356,500 Building $77,700 | $434,200 Land $356,500 Building $77,700 | |
| 2022 | $10,559.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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.
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.
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 |
| 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 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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