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Dan Bertolet

Dan Bertolet (pronounced “BER-də-lay”) is Senior Director of Sightline Institute’s Housing and Cities program. He is passionate about creating cities that welcome people of all incomes and tread lightly on the planet.

Prior to Sightline, Dan spent 11 years in urban planning, focused on sustainable community development. He holds a master's degree in urban design and planning from the University of Washington and a PhD in electrical engineering. As (marginally successful) strategies to avoid thinking incessantly about cities, Dan spends time trying to keep track of his two college-age kids, noodling on stringed instruments, fixing beater commuter bikes, treasure hunting in thrift stores, and sneaking off all too infrequently to play in the woods. He lives in Seattle.

Find his latest research here, email him at dan@sightline.org , and follow him on Twitter or Bluesky.

Dan Bertolet

Dan Bertolet

Washington Takes Statewide Zoning Reform to the Next Level

Lawmakers just passed groundbreaking bills on parking, TOD, and more.
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Washington Housing Bills to Watch in 2025 

More than two dozen bills aim to unlock great neighborhoods, greater affordability, and less red tape for Washingtonians.
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To Fix Inclusionary Zoning, Fund It

Lessons from places that are solving the biggest problem in abundant housing politics and policy.
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Five Flaws That Would Destine WA’s TOD Bills to Backfire

Allowing more apartment buildings in city neighborhoods where transportation options and jobs are abundant, is critical for Washington to address the housing shortage and control prices and rents; to curb sprawl, water, air, and climate pollution; and maximize the state’s investments in transit.
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Seattle Deserves a Better Comp Plan

The city can make three critical fixes to its 20-year growth plan: Let middle housing be bigger, allow apartment buildings in more places, and legalize car-free homes everywhere.
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Washington’s 2024 Short-Session Housing Wins

Three innovative bills carry forward the momentum of 2023 and complement its measures to legalize less expensive housing.
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Updated: Housing Bills to Watch in Washington in 2024

Numerous measures moving through Olympia would support more homes, in all shapes and sizes, throughout the Evergreen State. 
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Washington Bill Would Legalize Low-cost “Co-living” Homes

Co-living is an affordable, flexible, community-forward type of housing that serves diverse needs for people in all stages of life.
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UPDATED: 50 Housing Bills and How They Fared in Olympia

In 2023, Washington state leaders considered dozens of bills across the critical policy pillars of supply, stability, and subsidy.
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Washington Lot Split Bills Would Create Starter Homes, Support Community Stability

HB 1245 and SB 5364 advance affordability, financial security, wealth-building, and other benefits for Washingtonians in all kinds of communities.
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Washington Bill Would Boost In-law Apartments Throughout the State

Evidence is more conclusive than ever that the reforms proposed in HB 1337 are effective.
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