Welcome to the NJ. MOD IV Historical Database (HDB)!
Registration
Registration is required to access the HDB and is provided at no cost. Register here or use the link in the left navigation menu. Upon accepting the terms of use, you will enter your account details. After that you will be directed to the About Page.
Review the About Page thoroughly, as it contains essential information about the database and its limitations.
Once you have already registered, you can use the left hand panel to go directly to the Data or Map search pages. You can bookmark any of the pages for direct access.
Important Updates
Access to Owner Information
Due to compliance requirements with “Daniel’s Law” (P.L. 2021, c.371), the “Owner’s Name” field has been removed from the MOD IV Historical Database. This measure ensures protection for covered individuals, as we cannot reliably identify protected parcels. Government entities and researchers at state higher education institutions requiring owner information for official work may request access by contacting us through the green “Report A Problem” button.
Data Updates (August 5, 2024)
The database now includes 2024 data, which is being integrated into the search and map interfaces. Please report any issues through the “Report A Problem” link in the header, including as much detail as possible.
