Each single-family (RS) zoned lot with a primary structure is allowed one (1) accessory dwelling unit (ADU). ADUs are required to apply for and obtain a building permit.
All attached or detached ADUs in RS zones must meet the standards and criteria outlined in Puyallup Municipal Code 20.20.010 (11). Below is a list of standards that will be helpful in getting you started. Please note that this list is non-exhaustive and to reference PMC 20.20.010 (11), contact planning at Planning@PuyallupWA.gov, or see the ADU informational sheet.
- An accessory dwelling unit may be created either through internal conversion of a portion of the primary structure or through construction of an addition to the primary structure
- An attached accessory dwelling unit shall not exceed 900 square feet of floor area or 40 percent of the floor area of the primary dwelling, whichever is less, nor have more than two bedrooms
- If located in a new structure, a detached accessory dwelling unit shall not exceed 700 square feet or 40 percent of the floor area of the primary dwelling, whichever is less
- If the detached accessory dwelling unit is a conversion of an existing structure, then it cannot exceed 900 square feet, or 40 percent of the floor area of the new or existing primary structure, whichever is less. Additionally, the detached unit shall not have more than two bedrooms, nor be located on more than one floor
- Utilities for the accessory dwelling unit shall be metered jointly with the primary dwelling unit
- Either the primary dwelling unit or the accessory dwelling unit shall be physically occupied by the property owner for at least 6 months each calendar year. Owners shall sign an affidavit which attests to their residency for at least six months of each year. This affidavit shall be binding upon the owner or successive owners during the life of the accessory dwelling unit