What changes
The bill mandates the adoption of the International Building Code (IBC) standards for mass timber (Types IV-A, IV-B, and IV-C) within the New York Executive Law and the NYC Administrative Code.
Who is affected
Property developers, construction firms, structural engineers, municipal building departments, and timber industry suppliers.
Requirements and enforcement
The NYC Commissioner must submit proposed amendments incorporating these mass timber standards to the city council by January 1, 2028, following advisory committee review.
Costs and funding
Short-term compliance costs for design and architectural transitions; potential for long-term construction cost savings due to modularity.
When it takes effect
Takes effect on the ninetieth day after enactment, with a specific deadline of January 1, 2028, for NYC code update proposals.
Potential benefits
Promotion of sustainable, low-carbon construction methods and alignment with modern, globally recognized building safety and structural standards.
Risks and tradeoffs
Need for specialized training for building inspectors and fire safety personnel; initial supply chain constraints for qualified mass timber products.
What is still unknown
The exact timeline for wider statewide adoption beyond the specific amendments mentioned and the potential impact on local real estate market pricing.