1900 SW 4th Ave, Portland, OR 97201
This page offers links to additional information for new construction and improvements to houses, duplexes and two-unit townhouses. For more information about the permit process and related requirements, select the project type that applies to you.
Information on Accessory Dwelling Units (ADUs) and adding a dwelling in an existing structure.
Information related to small, non-habitable structures on the same property such as a house or duplex.
Overview of requirements for adding a fence.
Information on converting your attic, basement or garage into additional living space.
Information on demolishing structures.
General Structure Notes, Sample Plan & Details
Information on adding or replacing a deck.
Information relating to walls that support dirt fill.
Information for residential contractors that will help explain code requirements and provide tips to prevent delays on projects.
Information related to adding onto your house or duplex, when the scope of work includes new living area outside of the existing walls.
Information related to manufactured homes: putting one in a new location or altering an existing home.
Information on adding onto your house or duplex, when the scope includes expanding the upper story or attic outside of the existing roof or envelope.
You will find information on this page about installing a solar electric system or a solar water heating system on your house or accessory structure.