Unlocking Seattle’s Housing Potential: What House Bill 1110 Means for You


Published by RE-VESTA Group – Seattle Real Estate Experts

In 2023, Washington State enacted House Bill 1110 (HB 1110), a transformative law aimed at addressing the housing shortage by promoting "middle housing" in areas traditionally zoned for single-family homes. This legislation mandates that cities, including Seattle, allow for increased housing density through the development of duplexes, triplexes, fourplexes, and other multi-unit dwellings in residential neighborhoods.Your Voice RentonAP News+1Your Voice Renton+1

What Is Middle Housing?

Middle housing refers to residential structures that fall between single-family homes and large apartment complexes. Examples include duplexes, triplexes, fourplexes, townhouses, and cottage courts. These housing types are designed to blend into existing neighborhoods while providing more affordable and diverse living options.Wikipedia+1Your Voice Renton+1

Key Provisions of HB 1110

  • Increased Density Allowances: Cities with populations over 25,000 are required to permit at least two units per lot in residential zones. For cities with populations over 75,000, including Seattle, the requirement increases to four units per lot, and up to six units if the property is near major transit stops or if at least two units are affordable. AP News

  • Streamlined Approval Processes: The bill encourages cities to adopt objective design standards and limits public hearings for middle housing developments, aiming to reduce barriers to construction. WACities+1Law Files Washington+1

  • Parking Requirements Adjustments: HB 1110 restricts cities from imposing excessive off-street parking requirements, especially for smaller lots, to facilitate the development of middle housing. Law Files Washington

Implications for Seattle Residents

For homeowners and potential buyers in Seattle, HB 1110 opens up new opportunities:

  • Homeowners: Those owning property in residential zones may have the option to add additional units to their lots, potentially generating rental income or accommodating extended family.

  • Buyers: The increase in housing diversity can lead to more affordable options in desirable neighborhoods, making homeownership more accessible.

  • Investors and Developers: The relaxed zoning regulations present opportunities for developing multi-unit properties in areas previously limited to single-family homes.

Expert Insights

Tadashi Shiga, Executive Director of the Land Division at Realogics Sotheby’s International Realty and founder of the proptech company Realtie, emphasizes the importance of understanding local zoning changes. Realtie utilizes AI-powered software to identify potential redevelopment sites, assisting stakeholders in navigating the evolving real estate landscape.

Moving Forward

Seattle is in the process of updating its comprehensive plan to align with HB 1110 requirements, with full implementation expected by mid-2025. As the city adapts to these changes, residents and investors should stay informed about new opportunities and regulations.

At RE-VESTA Group, we are committed to guiding you through these developments. Whether you're a homeowner considering property expansion, a buyer seeking diverse housing options, or an investor exploring new ventures, our team is here to provide expert advice and support.

Contact RE-VESTA Group today to learn how HB 1110 can impact your real estate goals in Seattle.

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