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The City of Portland, Oregon

Development Services

From Concept to Construction

Phone: 503-823-7300


1900 SW 4th Ave, Portland, OR 97201

More Contact Info

Residential Permits

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.

Accessory Dwelling Units (ADUs)

Information on Accessory Dwelling Units (ADUs) and adding a dwelling in an existing structure.

Conversion to Living Space

Information on converting your attic, basement or garage into additional living space.

Dormer or Second Floor Additions

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.

Enlarging the Building Footprint

Information related to adding onto your house or duplex, when the scope of work includes new living area outside of the existing walls.


Overview of requirements for adding a fence.

Garage, Shed, Accessory Structures

Information related to small, non-habitable structures on the same property such as a house or duplex.

Manufactured Homes

Information related to manufactured homes: putting one in a new location or altering an existing home.

Residential Inspections Frequently Asked Questions

Information for residential contractors that will help explain code requirements and provide tips to prevent delays on projects.

Residential Solar Permits

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.

Simple Bathroom Permit Program

Interested in getting a bathroom permit without drawing plans? Learn more about the Simple Bathroom Permit process and how to apply.