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Committee debates major housing changes: ADU sizes, density calculations and 'stacked flat' bonuses
Summary
Seattle’s Select Committee on the Comprehensive Plan on Aug. 4 considered multiple housing amendments that would raise ADU size caps, exempt ADUs from density counting, expand affordable- and social-housing bonuses, and increase 'stacked flat' FAR and density under several competing options.
Seattle’s Select Committee on the Comprehensive Plan on Aug. 4 considered a broad set of housing amendments that would change how small-lot housing, accessory dwelling units (ADUs), and mid-density "stacked flat" projects are regulated and incentivized.
Council President Nelson framed his package as incentives to increase housing production: "When given the choice between a carrot or a stick, I'm a carrot person," he told the committee, describing bonus-based measures that trade development allowances for affordable units or other public benefits.
Key housing items presented by central staff included: - ADU size and density: proposals would increase maximum ADU sizes in some cases from a 1,000-square-foot cap to 1,200 or up to 1,500…
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