Warren County and Mansfield Township property record for 21 Slope Dr, Hackettstown, NJ 07840
| Property Type | Single Family Home |
|---|---|
| Details | 1,846 sqft · built 1966 |
| Lot Size | 0.5 acres (21,780 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $510,000 (May 2026) |
| Tax Bill | $7,714 (2025) |
| Deeds & Mortgages | May 2026 Sale & Mortgage May 2026 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 16-02104-0000-00019 |
| Primary APN | 16-02104-0000-00019 |
|---|---|
| Alternative APN |
|
| Stories | 2 Stories |
|---|---|
| Building Area | 1,846 sqft Living Area |
| Year Built | Built 1966 |
|---|---|
| Effective Year Built | Effective 1966 |
| Construction Type | Frame |
| Lot Area | 21,780 sqft (0.5 acres) |
| Street Address | 21 SLOPE DR |
|---|---|
| City | HACKETTSTOWN |
| State | NJ |
| Zip | 07840-4124 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Block | 2104 |
| Legal Lot Number | 19 |
| Jurisdiction | WARREN NJ |
| Township / Civil Division | MANSFIELD |
| Census Block Group | 2 |
| Census Block | 2001 |
| Census Tract | 31500 |
21 Slope Dr is owned and occupied by two individuals who bought it in May 2026.
Source: Warren County and Mansfield Township records, as of July 7, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 21 SLOPE DR, HACKETTSTOWN, NJ 07840-4124 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Husband and Wife |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| May 11, 2026 | Deed, Transfer · Conventional Mortgage STONE MORTGAGE CORPORATION |
| May 11, 2026 | Deed, Transfer · Conventional Mortgage STOCKTON MORTGAGE |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 11, 2026 · Amount on File |
| Deed Sale | May 11, 2026 · Amount on File |
| Prior Sale | Aug 22, 2006 · Amount on File |
| Deed Document Number | 2026636589 |
| Deed Book / Page | 3572 / 206 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed |
|---|---|
| Jurisdiction | WARREN NJ |
| Recording Date | May 11, 2026 |
| Property Address | 21 SLOPE DR, HACKETTSTOWN, NJ 07840-4124 |
| Document Number | 0000636589 |
| Book / Page | 3572 / 206 |
| Instrument Date | Apr 14, 2026 |
| Instrument | 2026636589 |
| Transaction Type | Transfer |
| Record Updated | Jun 1, 2026 |
| Title Company | CLEAR SKIES TITLE LLC, CLEAR SKIES TITLE |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $51,510.00 |
| Amount Accuracy | Calculated from Transfer Tax |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 21 SLOPE DR, HACKETTSTOWN, NJ 07840-4124 |
| Document Number | 0000636590, |
|---|---|
| Date | May 11, 2026 |
| Instrument | 2026636590 |
| Name | STONE MORTGAGE CORPORATION |
|---|
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | May 1, 2056 |
| Rate Type | Fixed Rate |
|---|---|
| Rate | 6.38% |
| Initial Type | Fixed Rate |
| Max Rate | -1% |
| Document Type | Deed |
|---|---|
| Jurisdiction | WARREN NJ |
| Recording Date | May 11, 2026 |
| Property Address | 21 SLOPE DR, HACKETTSTOWN, NJ 07840-4124 |
| Document Number | 003572/206 |
| Book / Page | 3572 / 206 |
| Instrument Date | Apr 14, 2026 |
| Instrument | 2026636589 |
| Transaction Type | Transfer |
| Record Updated | Aug 25, 2026 |
| Title Company | CLEAR SKIES TITLE LLC, CLEAR SKIES TITLE |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $51,510.00 |
| Amount Accuracy | Calculated from Transfer Tax |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 21 SLOPE DR, HACKETTSTOWN, NJ 07840-4124 |
| Document Number | 0000636590, |
|---|---|
| Date | May 11, 2026 |
| Instrument | 2026636590 |
| Name | STOCKTON MORTGAGE |
|---|
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | May 1, 2056 |
| Rate Type | Fixed Rate |
|---|---|
| Initial Type | Fixed Rate |
| Max Rate | -1% |
The 2025 property tax bill for 21 Slope Dr was $7,714, up 0.7% from the year before.
Source: Warren County and Mansfield Township assessment roll, as of July 7, 2026
| Type | Name |
|---|---|
| State | New Jersey |
| County | Warren County |
| County Subdivision | Mansfield Township |
| Elementary School District | Mansfield Township School District (KG - 06) |
| Secondary School District | Warren Hills Regional School District (07 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $216,500 (-) Land $78,500 Building $138,000 | $216,500 (-) Land $78,500 Building $138,000 | |
| 2025 | $7,714.00 (+0.73%) | $216,500 Land $78,500 Building $138,000 | $216,500 Land $78,500 Building $138,000 |
| 2024 | $7,658.00 | ||
| 2023 | $216,500 Land $78,500 Building $138,000 | $216,500 Land $78,500 Building $138,000 | |
| 2022 | $7,553.00 |
Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.
FEMA maps place 21 Slope Dr in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective September 29, 2011 · 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 |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 1 in force |
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 risk around 21 Slope Dr is low, with 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 80% of the US · lower than 65% of New Jersey |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Direct burnable vegetation |
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 | HACKETTSTOWN MUA serves 22,000 people · EPA ID NJ2108001 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Dec 2023 |
| Lead | 5 ppb (2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 15 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 116 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 1,200 / 35 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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