Accessory Dwelling Units (ADUs)

Planning & Zoning

Refer to Woodburn Development Ordinance (WDO) 2.07.20 for the special use standards specific to accessory dwelling units (ADUs).  These supplement the basic site development standards – including minimum setbacks, maximum lot coverage, and maximum height – for whatever zoning district applies to a given property.  For sites zoned Residential Single Family (RS), refer to WDO Table 2.02B.

This ADU webpage supplements the Residential Accessory Structures webpage.

A project needs to meet basic site development standards in the WDO in addition to the building code in order for the Department to approve it.  Staff wants to avoid homeowners and contractors wasting time and money applying for building permits for projects that can't conform to WDO standards and that staff couldn't approve.

Street improvements per WDO 3.01.03C.2 might be required.

Questions?  Either call (503) 982-5246 or contact the Associate Planner.

Building

Refer to the Building Division for building permit questions.

Note:  The Community Development Department has no involvement with how the Marion County Assessor would assess and tax an ADU.  For property tax questions, contact the Assessor's Office.