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

S 424 establishes a pilot program in Union City, Trenton, and Camden to address energy inefficiency and fire risks from unsealed spaces between residential buildings (open cockloft spaces). The program provides free weatherization measures - including fire-resistant barriers, insulation, and ventilation - for low- and moderate-income homeowners, while other property owners can pay for improvements through a 10-year property tax assessment. It appropriates $30 million and requires participating cities to inventory affected buildings and share data for evaluation.