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Development Services

From Concept to Construction

Phone: 503-823-7300

TTY : 503-823-6868

1900 SW 4th Ave, Portland, OR 97201

Find your permit type

Brochure #2 - Do I need a permit for my project? Brochure #2 - Do I need a permit for my project? This brochure provides general information about the types of work that require a permit, and those that do not for a one or two family dwelling. As the owner of a one or two family dwelling, you can hire a licensed contractor to get the proper permits and complete work, or in most cases, you can obtain permits and do the work yourself.

Use the table below to find out if you need a permit, and the type of permit required.

  1. Based on the work proposed, select from one of the five categories listed below.
  2. Locate the work in the first column and if a permit is required from the second column.

Note: Often, a proposed project will include work from several categories. If this is the case for your scope of work, be sure to check the requirements for each category. More information on permits.


2. Residential Construction (single- or two-family dwellings) Sites

WORK PROPOSED PERMIT NEEDED? WHAT TYPE OF PERMIT?
New construction:  
New single family dwelling Building Permit (RS)
New duplex Building Permit (RS)
Townhouses Building Permit (RS)
Garage: less than 200 sf and less than 10 ft in height Zoning permit (ZP)
Shed: less than 200 sf and less than 10 ft in height Visit Planning & Zoning staff at the Development Services Center or call (503) 823-7526 to determine if a Zoning Permit (ZP) is needed.
Garage or shed: greater than 200 sf or more than 10 ft in height Building Permit (RS)
Accessory structure: containing an accessory dwelling unit (ADU) Building Permit (RS)
Swimming pool, spa Building Permit (RS)
Fence If higher than 7 feet, Building Permit (RS) required.
Play structures Visit Planning & Zoning staff at the Development Services Center or call (503) 823-7526 to determine if a Zoning Permit (ZP) is needed.
 
Alterations to existing structures:  
Demolish a structure Building Permit (RS)
Windows or doors If the size of the rough opening is not changed, no Building Permit (RS) is required.

If adding a window or door, a Building Permit (RS) is required.

Keep in mind that residences in buildings that contain 3 or more dwelling units fall under commercial standards.

Visit Planning & Zoning staff at Development Services Center or call (503) 823-7526 to determine if a Zoning Permit (ZP) is needed.
Addition – increase the size of the structure Building Permit (RS)
Add a second floor Building Permit (RS)
Add a dormer Building Permit (RS)
Add or remove a dwelling unit Building Permit (RS)
Deck: Add a deck 30" or less above the ground and more than 3’ to the property line No Building Permit Permit (RS) required
Add a deck more than 30" above the ground Building Permit (RS)
Add a patio cover or porch Building Permit (RS)
Asbestos abatement Contact Oregon Department of Environmental Quality (DEQ) or call (800) 452-4011.
Convert an attic, basement, garage to finished space Building Permit (RS)
Dry rot repair Building Permit (RS)
Insulation - Install or Replace Visit the Plan Review Staff at the Development Services Center or call (503) 823-7310 to ask if a Building Permit (RS) is needed.
Rebuild the foundation Building Permit (RS)
Reroofing (When existing structural sheathing is left in place) No Permit Required
Reroofing (When sheathing or roof rafters are modified) Building Permit (RS)
Siding - Install or Replace No Building Permit required.

Visit Planning & Zoning staff at the Development Services Center or call (503) 823-7526 to determine if a Zoning Permit (ZP) is needed.
Staircase - Build or Rebuild Building Permit (RS)
Gutters - Replace No Permit required
Seismic upgrade/retrofit Building Permit (RS)