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Accessory Dwelling Units (ADUs)

In Salem we support Accessory Dwelling Units and encourage you to consider creating one!

Accessory dwelling units are allowed by right. That means all you need is a building permit to create one.

The full text of the approved ordinance can be found in Section 3.2.8 of the Salem Zoning Ordinance, available by clicking the button below.

What is an accessory dwelling unit?

An accessory dwelling unit is an independent residential living area that is on the same property as a larger, primary dwelling. Accessory dwelling units go by many names, including but not limited to: “in-law suite” “second unit” “granny flat” “basement apartment” “garage apartment.” You can find out more about ADUs at this state website or this website from the AARP.

An accessory dwelling unit generally takes three forms:

  1. Re-purposed space: e.g. above the garage or in the basement.

  2. Stand-alone unit: separate from the primary home.

  3. Attached: addition to the primary home.

Examples of Accessory Dwelling Units
Above a garage.
In an attic.
In an attic.
Above a garage.
In a basement.
In a basement.
 

Resources

Housing Strategies

How Accessory Dwelling Units Impact the Housing Market

Accessory Dwelling Units create an environment where the private sector can produce affordable housing, without having to invest public dollars.

Affordable housing through ADUs is created in two ways:

  1. Accessory dwelling units rent below what typical apartments rent for.

  2. The unit could generate rental income to help homeowners cover mortgage payments or simply make ends meet.

Video exploring ADU use in Oregon.