tate law does not allow jurisdictions to require all new middle housing to be affordable at a specific income level. Imposing affordability requirements on private development (known as “inclusionary zoning”) is allowed by Oregon law only for development with at least 20 units per building, and only if certain incentives are offered in exchange. This would also be prohibited by House Bill 2001 because it would almost certainly constitute an unreasonable cost that is not applied to single-family housing. The City could make density bonuses, lower parking ratios, or other code incentives that go beyond minimum compliance available only for development that meets certain affordability criteria but must allow middle housing subject to standards consistent with HB2001 regardless of pricing. New middle housing is likely to be affordable to a broader range of households than new single-family detached homes; however, it is very difficult to deliver new housing (of any form) that is affordable to the City’s lowest income residents without public subsidy. Even if it were legal, requiring middle housing to offer below-market rents or sales prices without providing public subsidy or incentives would likely make it impossible for the private market to develop. It would also mean that middle housing would face even greater obstacles compared to single family development. Nearly all for-profit developers would likely continue to build single family homes. Some non-profit or affordable housing builders would be able to build middle housing, but it would rarely be delivered by the private market.