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Deck Residential Building Permits

Apply online for residential building permits for adding and replacing decks in Portland. Get all required forms for a deck permit, roof deck permit and balcony permit including the building permit application. Get information about deck inspections and what's required for a completed application.

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Building Permits are required for most decks. A building permit is not required for decks where no part of the walking surface is more than 30 inches above adjacent grade.

What you need for a residential deck permit

The following information must be submitted when applying for a permit to construct a residential deck. Construction drawings and supporting documentation are required to show the scope and that the proposed work will meet all applicable codes. Since every project is unique, there may be some situations where you will be asked to provide additional information.

  • Building Permit Application for Building, Site Development and Zoning Permits 
  • Simple Site Erosion Control Requirements Form 
    • If the project will result in disturbing the ground with mechanical equipment and
    • If the project qualifies as a simple site (less than 10% slope, more than 50 feet from a wetland or waterbody and outside an environmental or greenway zone
  • Erosion Control Plan
    • If the project will result in disturbing the ground with mechanical equipment 
    • If the project qualifies as a complex site
    • Can be part of the site plan
  • Site plan (Scale site plans to most appropriate scale, e.g. 1”=10’ or 1/4”=1’)
    • Property lines, with dimensions.
    • Total area (in square feet) of the lot
    • Adjacent streets and any easements
    • Property address and R number
    • North arrow
    • Distance between buildings and between buildings and property lines
    • Grade elevations, for lot, at property corners and corners of structure(s)
    • Area (in square feet) of any existing/proposed buildings and decks
    • Dimensions and area (in square feet) of any proposed paving.
    • Location of sewer and water lines and method of stormwater disposal
  • Structural Plans (Scale of plans to be ¼”=1’)
    • Deck elevations
    • Foundation plan showing location and size of footings and posts
    • Deck framing including dimensions, lumber size, spacing and span
    • Guardrail detail, showing attachment to deck
    • Connections to existing construction
    • Any engineering calculations may be attached to the plans and engineering details
    • incorporated into the plans or cross-referenced on the plans 
  • Mitigation Form and/or a Stormwater Plan (if your project will add more than 500 square feet of impervious area)
  • Disclaimer for Existing On-site Sewage Disposal System (if house has a septic tank or cess pool on site)

Get forms to include with your application

Who can do the work

Contractors must have a license to work in Oregon. The Oregon Construction Contractors Board (CCB) issues licenses to contractors. The permit application and their company materials must list the license number. Need help finding a contractor? The CCB website has good tips on how to search for one. Plumbing and Electrical contractors have additional license requirements.  

If you are doing the work yourself, then you can sign the trade permit applications. You cannot do electrical work yourself. You must hire a licensed Electrical Contractor to do any electrical work. The State of Oregon has some helpful information for homeowners: 

Building permit application and important forms for adding a deck

Things you need to apply for this permit may include some or all of the following. If you aren't sure what forms you need, contact Permitting Services. Deck permit forms include: 

Step 1: Research your property and what you need for your project

Residential deck code and rules

Permits are reviewed under multiple city and state codes including: 

Planning & Zoning 

Required setbacks that could impact your project. Some decks may be exempt from requiring a building permit, but may still require a Zoning Permit, depending on specific site conditions or placement on the lot. To find out setback information and determine if you need a zoning permit call the Planning and Zoning Information phone number. 

Read more about deck permits

Check out the Deck Design Guide, an easy-to-use document to help design a deck, obtain a building permit and pass inspections, with pre-approved details and construction standards:

Decommissioning a Septic Tank or Cesspool

If your house was not connected to the sewer when it was built, you will likely need to decommission the cesspool or septic tank.  

Permit Fees

Permit fees are based on the type of permit, the work proposed, the valuation of the work, and the staff that need to review the work. Permit Fee information.

Step 1b: Still need help? Schedule a 15-minute appointment 

If you have questions after reviewing the information on this page, we recommend you book a free 15-minute appointment with us. 

This is an optional step. We're here for you if you have questions about the information and materials you need to apply. 

If you need help, here are some experts we recommend you meet with for this project*: 

Meet with a Permit Technician 

  • Schedule this appointment if you have questions about the permit process. Permit technicians will provide you with the information found on this page. 
  • Get help with permit application requirements. 

These are optional meetings. Only book if you have questions. 

Meet with a Permit Technician

Meet with a City Planner 

  • We recommend you meet with city planner about planning and zoning or tree code requirements before submitting building permits.  
  • Get information on rules that apply to your property. 

These are optional meetings. Only book if you have questions.

Meet with a City Planner

Meet with a Building Code and Engineering Reviewer

  • Get help with building code and engineering requirements. 
  • To submit a question by phone, call Building Code Plan Review.  

These are optional meetings. Only book if you have questions. 

Meet with a Building Code and Engineering Reviewer

*Not all review groups are listed. The groups listed above will help get you started. 

Step 2: How to apply for a residential deck permit 

You can submit your permit application request online using Development Hub PDXRead step-by-step instructions for submitting a permit application request online or in person. 

For most projects, electronic plans are submitted through the Single PDF process. Large projects such as commercial new construction are submitted though PDX E-plans and ProjectDox.

If you are unable to create electronic plans, please call us and we will work with you.

Step 3: Plan review and checksheets

You can check the status of a permit review on Portland Maps permit/case search. Many people might review a single permit. The Permit Review Process web page has more information about the groups who review permits. 

A checksheet is sent to the applicant when a reviewer needs additional information or a correction has to be made to the plans. Read more about how to send us corrections and how to prepare corrected paper plans.

Step 4: Permit Issuance

You will be contacted when your permit is ready, and notified of your final fee total. Instructions will be given on how to get your approved permit and pay your fees. Your permit is not issued until all fees are paid. Read more about the pre-issuance process.

Step 5: Start building and get ready for inspections

The inspection card lists all the inspections you will likely need during your construction project, and what work needs to be done first.  

Once your building permit is issued, erosion control measures and sometimes tree protection measures must be installed, inspected and approved prior to beginning any further ground-disturbing activities.

All permits need a final approval inspection to be complete.

Step 6: Schedule an inspection, get inspection results and make corrections

To schedule an inspection, call the automated inspection request line. You will need your IVR or permit number and the three digit code for the inspection. Get the results of the inspection on Portland Maps permit/case search the next day.

Read more about why work does not get approved and how to schedule a reinspection.

Contact residential inspectors about your permit inspections

If you have questions before or after your inspection, you can talk to an inspector.

Additional reading and information

Find more helpful information:

Contact

Building Code Plan Review

Development Services

phone number503-823-1456

Monday through Friday from 8 am - 5 pm. Leave a message with detailed information.

General Inquiries

Development Services

phone number503-823-7300

Monday through Friday from 8 am - 5 pm. Leave a message with detailed information.

Permitting General Information

Development Services

Zoning Information Line

Development Services

phone number503-823-7526

Monday through Friday from 8 am - 5 pm. Leave a message with a phone number, the project address, and your questions.

Requests for Inspection

Development Services

phone number503-823-7000

Automated Line - Requires an IVR or permit number

Site Development Permits and Inspections

phone number503-823-6892

Monday through Friday from 8 am - 5 pm. Leave a message with detailed information.