Not every vacant lot fully conforms to its municipality's zoning ordinance. Undersized lots, unusual shapes, or a proposed use that doesn't match the zone can all require a variance before you're allowed to build. Here's a general overview of when a variance comes into play and how the process works in New Jersey.
Zoning Is Governed by NJ's Municipal Land Use Law
New Jersey's Municipal Land Use Law (MLUL) sets the framework that every municipality's local zoning ordinance operates within. Each town's ordinance defines what can be built where — minimum lot size, setbacks, lot width, height limits, and permitted uses by zone. A lot that doesn't meet those requirements generally needs relief from the municipality's Zoning Board of Adjustment before it can be developed.
"Bulk" Variances vs. "Use" Variances
Variances generally fall into two categories. A bulk, or dimensional, variance ("c" variance) applies when a lot doesn't meet a specific numeric standard — lot size, frontage, or setback, for example — but the proposed use itself is permitted in the zone. A use variance ("d" variance) is required when the proposed use isn't permitted in the zone at all, and it carries a higher legal bar to approve.
Older, Pre-Existing Undersized Lots Are Common
In many older NJ subdivisions — particularly around lake communities and older rural lot patterns — individual lots were platted decades before current zoning minimums were adopted, leaving many technically undersized under today's ordinance. These lots often still get built on, but typically require a bulk variance addressing the shortfall.
The Process Involves a Public Hearing
Applying for a variance generally means submitting an application to the local Zoning Board of Adjustment, providing notice to neighboring property owners within a set radius, and presenting your case — often with the help of a land use attorney and a licensed engineer or architect — at a public hearing. The board weighs the request against the standards set out in the MLUL before voting to approve or deny it.
Factor Variance Risk Into Your Timeline and Offer
If a parcel you're considering will likely need a variance to build the way you intend, build that into both your due diligence timeline and your offer. A variance isn't guaranteed, and the process can add weeks or months before you have a final answer — information that should shape how you structure contingencies in your purchase contract.