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Bill Summary · SB 661

Legislative bill overview

SB 661 promotes the use of plant-based building materials in Hawaii's construction industry. The bill, sponsored by Senators Gabbard, Fukunaga, and Chang, appears designed to encourage sustainable and locally-sourced alternatives to conventional building materials. The measure passed its initial committee review with amendments and was referred to the Ways and Means Committee before being carried over to the 2026 session.

Why is this important

Hawaii imports the vast majority of its building materials, making construction costs among the nation's highest and creating supply chain vulnerabilities. Shifting toward plant-based materials could reduce construction expenses, create local manufacturing jobs, and support Hawaii's renewable energy and sustainability goals. Additionally, plant-based materials have lower carbon footprints than conventional alternatives, supporting Hawaii's climate commitments.

Potential points of contention

  • Building code compliance: Plant-based materials may not meet existing Hawaii Building Code standards without costly testing and certification, creating implementation barriers
  • Cost and market feasibility: Whether plant-based alternatives are cost-competitive with imported materials; limited local production capacity may require significant infrastructure investment
  • Scope ambiguity: The bill's specific requirements, incentives, or mandates regarding plant-based materials are unclear from the legislative summary alone

Compiled from official sources — confirm details with the bill’s official record.

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