Establishes weatherization and energy efficiency pilot program to address open cockloft space between certain buildings; appropriates $30 million.

This bill establishes a $30 million pilot program to address unsealed spaces between buildings (called "open cockloft spaces") in Union City, Trenton, and Camden. It requires these cities to identify affected residential buildings and install fire-rated separations (like fire-resistant drywall) and other energy efficiency upgrades. Low- and moderate-income homeowners receive these improvements at no cost, while other property owners can pay through a 10-year property tax special assessment. The program aims to reduce energy costs, improve fire safety, and evaluate long-term benefits for urban buildings.