How much does a building permit cost in Rainier, OR?

Fees are calculated as: Based on ICC Building Valuation Data Table × square footage.

How do I apply for a building permit in Rainier, OR?

1. Licensed contractors can apply for most building permits online via Oregon ePermitting 2. Applications may be submitted in person to Columbia County offices at 445 Port Avenue, Port Business Center, St. Helens 3. Contact: Columbia County Building Division, 503-397-1501 4. All contractors must hold valid Oregon Construction Contractors Board (CCB) license 5. Plan review and field inspections conducted before completion

How do I schedule a building inspection in Rainier, OR?

Inspections can be scheduled via: 503-397-1501.

City Building Permits

Rainier, OR - 2026 Building Permit Guide

How to apply for a building permit in Rainier, Oregon. Permit authority, application steps, fees, and inspection requirements.

Oregon Columbia County Updated March 2026

Permit Authority

All properties within the incorporated City of Rainier; administered by Columbia County Building Division

Department: Columbia County Building Division
Address: 445 Port Avenue, Port Business Center, St. Helens, OR 97051
Phone: 503-397-1501
Website: https://www.columbiacountyor.gov/BuildingPermitFees

Online Permit Portal

Open Oregon ePermitting System

Platform: Accela • Account required: Yes • Submission: Online only

Application Process

Licensed contractors can apply for most building permits online via Oregon ePermitting
Applications may be submitted in person to Columbia County offices at 445 Port Avenue, Port Business Center, St. Helens
Contact: Columbia County Building Division, 503-397-1501
All contractors must hold valid Oregon Construction Contractors Board (CCB) license
Plan review and field inspections conducted before completion

General Requirements

All new construction requires a building permit

Building code: Oregon Residential and Structural Specialty Codes
Contractor requirements: All contractors must hold valid Oregon Construction Contractors Board (CCB) license

Fees

Permit fee formula: Based on ICC Building Valuation Data Table × square footage

Fees change. Verify current amounts at the official fee schedule (effective September 1, 2025).

Work That Does NOT Require a Permit

Contact the Columbia County Building Division to confirm whether your project requires a permit before starting work.

Inspections

How to Schedule

503-397-1501 (phone)

Typical inspection sequence: Columbia County Building staff conduct inspections for Rainier; plan examinations and field inspections required

Additional Resources

Building code: Oregon Residential and Structural Specialty Codes
Verify contractor license: Oregon CCB License Search
License lookup guide: Oregon Contractor License Requirements
Contract template: Oregon Homeowner-Contractor Agreement
Oregon hub: Oregon Contractor License & Permit Hub

Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the Columbia County Building Division before applying.

Frequently Asked Questions

Rainier Building Permit FAQ

Do I need a building permit in Rainier, OR?: All new construction requires a building permit
How much does a building permit cost in Rainier, OR?: Fees are calculated as: Based on ICC Building Valuation Data Table × square footage.
How do I apply for a building permit in Rainier, OR?: 1. Licensed contractors can apply for most building permits online via Oregon ePermitting 2. Applications may be submitted in person to Columbia County offices at 445 Port Avenue, Port Business Center, St. Helens 3. Contact: Columbia County Building Division, 503-397-1501 4. All contractors must hold valid Oregon Construction Contractors Board (CCB) license 5. Plan review and field inspections conducted before completion
How do I schedule a building inspection in Rainier, OR?: Inspections can be scheduled via: 503-397-1501.

Need help with your project?

Navigating permits in Rainier can be complicated.

Jaspector connects you with local experts who can review your scope, verify your contractor, and help you understand what permits your project actually needs.

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Important: This page is an educational resource provided by jaspector.com. It is not legal advice, and it does not substitute for official guidance from the permit authority listed above. Permit requirements, fees, and processes change frequently. Always verify current requirements directly with the issuing department before beginning any construction project. Use of this page does not create an attorney-client relationship. Jaspector assumes no liability for any outcomes arising from reliance on this information.

Other cities in Columbia County

St Helens Scappoose Vernonia Clatskanie

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