1. New Jersey Municipal Land Use Law (MLUL), N.J.S.A. 40:55D-70(d). This statute grants the municipal Zoning Board of Adjustment the power to "grant a variance to allow a use or principal structure in a district restricted against such use or principal structure." This is the legal basis for seeking permission for a non-conforming use.
2. New Jersey Real Estate Commission, State of New Jersey Real Estate Salesperson and Broker Course Curriculum. Topic VIII, Section B, "Zoning," mandates that the pre-licensure course cover the concepts of "Variances" and "Non-conforming use," identifying this as the proper administrative procedure for dealing with uses not permitted by current zoning.
3. Gormley, W. P., & Salkin, P. E. (2013). Rathkopf's The Law of Zoning and Planning (4th ed.). Thomson Reuters. Section 58:1, "Variances, In General," explains that a variance is the mechanism designed to afford relief to individual property owners from the strict application of a zoning ordinance.