Authorizes imposition of additional fines for overcrowding.

This bill allows New Jersey municipalities to create ordinances imposing fines for illegal overcrowding in residential buildings with four or fewer rental units. Landlords or tenants can face fines up to $2,500 for a first violation, $5,000 for a second, and $10,000 for subsequent violations within five years, depending on who caused the overcrowding (e.g., tenants exceeding lease limits without consent). It requires municipalities to provide notice and an opportunity for a hearing before fines are imposed, and exempts owner-occupied properties unless rooms are rented in violation of law. The bill does not change housing occupancy standards but adds enforcement tools for local code violations.