Lawmakers have been pouring more money into new housing but affordability and homelessness are still major problems.

Restructures the conveyance tax to a marginal rate system for the sale of properties with residential use, adjusts the tax for multifamily properties to reflect value on a per-unit basis, and applies a cost-of-living adjustment to conveyance tax rates. Allocates revenues from conveyance tax collections. Allocates a portion of conveyance tax collections to the Dwelling Unit Revolving Fund to fund infrastructure programs in areas that meet minimum standards of transit-supportive density. Allocates a portion of conveyance tax revenues to the Hawaiian Home Lands Infrastructure and Housing Special Fund. Establishes and appropriates funds out of the Hawaiian Home Lands Infrastructure and Housing Special Fund. Effective 7/1/3000. (HD3)

Proposes constitutional amendments to expressly provide that the Legislature may authorize political subdivisions, such as the counties, to issue housing infrastructure growth bonds for specified public works, public improvements, or other actions necessary for housing and community development, and exclude these bonds from determinations of the funded debt of the political subdivisions. Effective 7/1/3000. (HD1)

Part I: Fixes the applicable building codes, standards, and county amendments for the life of a building permit, subject to certain exceptions and rules. Part II: Specifies the applicability of the International Residential Code. Authorizes a county to adopt amendments to the Hawaiʻi state building code, under certain circumstances, and repeals the counties' existing authority to amend or adopt the buildings code without council approval. Changes the adoption of the Hawaiʻi state building code from a two-year cycle to a six-year cycle. Part III: Appropriates funds for the State Building Code Council for staffing and necessary consultant services. Effective 7/1/3000. (HD2)

Authorizes a county to reduce the aggregate zoned residential capacity within the county only if the county offsets that reduction by increasing zoned residential capacity elsewhere in the county, such that there is no net loss in residential capacity in the county. Effective 7/1/3000. (HD1)