House Bill 2001 Background

In 2019, the Oregon state legislature passed House Bill 2001 (“HB 2001”). The law requires cities to allow a wider variety of housing choices in all residential zones in order to address three goals: options, supply, and diversity.

House Bill 2001 requires the City of Lake Oswego to amend our Community Development Code for compliance by a deadline of June 30, 2022. Staff has recently released a public review draft of the proposed code amendments, which was considered at a Planning Commission Public Hearing on April 11, 2022. A City Council Public Hearing will be held on May 17, 2022.

If the City is unable to adopt code that complies with middle housing requirements by this date, the state’s Middle Housing Model Code would be directly applied to the City.

State Goals & Concepts:

  • Options: Provide more housing options to meet needs of different households.
  • Supply: Increase overall housing supply.
  • Diversity: Encourage more inclusive neighborhoods by allowing more affordable housing types in more areas.

Types of Middle Housing

The bill stipulates that all single-family residential zones must allow “middle housing”, which includes duplexes, triplexes, quadplexes, townhouses, and cottage cluster housing.

  • Duplex: 2 attached dwelling units on one lot
  • Triplex: 3 attached dwelling units on one lot

  • Quadplex: 4 attached dwelling units on one lot

  • Townhouse: Between 2 and 4 attached dwelling units, each on their own lot

  • Cottage Clusters: A grouping of five to eight small houses oriented around a common greenspace or courtyard.


Contact Information

Erik Olson, Senior Planner, (503) 697-6524 or email.

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