Mercer County and Princeton property record for 343 Prospect Ave, Princeton, NJ 08540
| Property Type | Single Family Home |
|---|---|
| Details | 3,444 sqft · built 1960 |
| Lot Size | 0.302 acres (13,159 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $375,000 (Aug 1989) |
| Tax Bill | $22,681 (2025) |
| Deeds & Mortgages | Jan 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 14-00056-06-00151 |
| Primary APN | 14-00056-06-00151 |
|---|---|
| Alternative APN |
|
| Stories | 2 Stories |
|---|---|
| Building Area | 3,444 sqft Living Area |
| Year Built | Built 1960 |
|---|---|
| Effective Year Built | Effective 1960 |
| Construction Type | Frame |
| Lot Area | 13,159 sqft (0.302 acres) |
| Lot Dimensions | 140 ft deep x 94 ft wide |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 343 PROSPECT AVE |
|---|---|
| City | PRINCETON |
| State | NJ |
| Zip | 08540-5330 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R2 |
| Legal Description | B-56,L-151 |
| Legal Block | 56.6 |
| Legal Lot Number | 151 |
| Jurisdiction | MERCER NJ |
| Township / Civil Division | PRINCETON |
| Census Block Group | 4 |
| Census Block | 4022 |
| Census Tract | 4204 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Lake Carnegie Historic District listed 1990 · 6 contributing resources · NRIS 90001000 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
Source: Mercer County and Princeton assessment roll, as of July 6, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 343 PROSPECT AVE, PRINCETON, NJ 08540-5330 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Aug 14, 1989 · Amount on Record |
| Deed Sale | Aug 14, 1989 · Amount on Record |
| Deed Book / Page | 2497 / 729 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | MERCER NJ |
| Property Address | 343 PROSPECT AVE, PRINCETON, NJ 08540-5330 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | BETA ABSTRACT OF NJ LLC |
| Name | Verified Name |
|---|
| Document Number | 0000004931 |
|---|---|
| Date | Jan 30, 2020 |
| Book Page | 11484/0548 |
| Instrument | 2020004931 |
| Name | FIRST REPUBLIC BANK |
|---|---|
| Type | Bank |
| Address | SAN FRANCISCO, CA 94111 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Feb 1, 2050 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 2.85% |
| Adjustable | Adjustable Rate Rider |
| Type Change Date | Feb 1, 2027 |
| Change Frequency | Annually |
| Index | 1-Year CMT |
| Max Rate | 10.9% |
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 | $829,900 (-) Land $488,000 Building $341,900 | $829,900 (-) Land $488,000 Building $341,900 | |
| 2025 | $22,681.00 (+2.63%) | $829,900 (-) Land $488,000 Building $341,900 | $829,900 (-) Land $488,000 Building $341,900 |
| 2024 | $22,100.00 (+9.5%) | ||
| 2023 | $829,900 Land $488,000 Building $341,900 | $829,900 Land $488,000 Building $341,900 | |
| 2022 | $20,183.00 |
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 |
| Flood Insurance Cost | Premium on Record median of 16 policies |
| Nearby Flood Policies | 16 in force |
| Nearby Flood Claims | 12 (1984–2024) |
| Claims Outside the SFHA | 9 of 12 |
| Most Recent Claim | Apr 2024 · rainfall accumulation |
| Claims by Event |
|
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 80% of the US · lower than 65% of New Jersey |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Direct burnable vegetation at the parcel |
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 283 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 |
5G (outdoors only) and 4G LTE
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