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Bill

SB 6030

Amending the county population threshold for counties that may exempt from taxation the value of accessory dwelling units to incentivize rental to low-income households.

2023-2024 Regular Session Introduced by John Braun and 5 co-sponsors

SB 6030 lowers county population thresholds to expand property tax exemptions for accessory dwelling units rented to low-income households across Washington state.

By resolution, returned to Senate Rules Committee for third reading.
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Bill Summary · SB 6030

Legislative bill overview

SB 6030 modifies Washington state law to allow more counties to offer property tax exemptions for accessory dwelling units (ADUs) that are rented to low-income households. Currently, only counties meeting certain population thresholds qualify for this exemption; this bill adjusts those thresholds to expand eligibility geographically.

Why is this important

ADU tax exemptions reduce barriers to building rental housing for low-income residents by lowering the long-term cost of ownership. Expanding this incentive to more counties could increase affordable housing stock in regions currently excluded, though implementation depends on individual counties choosing to adopt the exemption.

Potential points of contention

  • Urban vs. rural impact: Smaller counties may lack demand for ADUs or lack property tax base flexibility compared to larger counties, raising questions about whether the incentive will be equally effective statewide
  • Revenue loss: Counties lose property tax revenue from exempted ADUs; fiscal impact depends on adoption rates and must be weighed against housing affordability goals
  • Income verification burden: Counties must verify tenant income to qualify for exemptions, creating administrative costs and potential privacy concerns

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

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