Gaston, OR - 2026 Building Permit Guide

Permit Authority

Gaston publishes city building permit and excavation permit forms directly on its official site. Public information is limited, so this is a thin-data jurisdiction. Applicants should confirm whether any trade permit components are routed to Washington County or another authority before filing.

Department

City of Gaston

Address

202 1st Street, Gaston, OR 97119

Phone

503-985-3340

Email

wenonahb@cityofgaston.com

Website

https://www.cityofgaston.com/

Online Permit Portal

Application Process

1. Download the city permit form for the project type from the official site.
2. Submit the form by mail, fax, email, or directly to Gaston City Hall.
3. Attach the required project information, valuation, contractor information, and drawings where required.
4. Pay permit fees before approval. The excavation permit form states fees must be paid before approval and instructs applicants to contact the city for the current fee schedule.
5. Receive signed permit approval from the city.
6. Confirm inspection steps with city staff because the public site does not post a full inspection handbook.

Typical processing time: No public estimate located. Thin data.

Source: City of Gaston

General Requirements

Gaston publishes a city building permit application for new construction, additions, alterations, replacement work, demolition, accessory buildings, multi-family work, and commercial or industrial work. It also publishes a separate excavation permit form.

Required Documents

• Application
• valuation
• contractor license information
• owner and applicant contact information
• and supporting drawings or specifications as requested.

Permit validity

Not clearly posted on the public pages reviewed; Oregon 180-day baseline is the statewide default unless a local rule differs.

Building code

The city website reviewed does not publish a current code-adoption summary page; applicants should confirm directly with staff. Thin data.

Owner-builder

Owners may apply directly on the city form.

Contractor requirements

The city application requests CCB license information.

Fees

Minimum permit fee

Not publicly summarized on the reviewed pages.

Plan check fee

Not clearly summarized on the public pages reviewed

Permit fee formula

The building permit application indicates fees are based on the value of the work. Excavation permit form states current fee schedule is available from the city.

Reinspection fee

Not clearly summarized on the public pages reviewed

Penalty (no permit)

Not clearly summarized on the public pages reviewed

Payment note

The home page advertises online payments for permits and planning fees and notes that transaction fees apply

Fees change. Verify current amounts at the official fee schedule.

Work That Does NOT Require a Permit

• Oregon residential permit exemptions may apply to some small detached structures, low fences, and limited minor work.
• Gaston may still require local approval for excavation, grading, or right-of-way impacts.

Inspections

How to Schedule

• Confirm directly with city staff (other)

Inspection hours

City Hall hours are Monday through Friday, 8:00 a.m. to 5:00 p.m.

Time windows

City Hall hours are Monday through Friday, 8:00 a.m. to 5:00 p.m.

Typical inspection sequence: Not publicly outlined; expect foundation, framing, rough, and final inspections where applicable

Additional Resources

• Building code: The city website reviewed does not publish a current code-adoption summary page; applicants should confirm directly with staff. Thin data.
• Verify contractor license: Oregon CCB License Lookup
• Zoning information: View zoning info
• Resource
• Resource
• License lookup guide: Oregon Contractor License Requirements
• Contract template: Oregon Homeowner-Contractor Agreement
• Oregon hub: Oregon Contractor License & Permit Hub

Frequently Asked Questions

Gaston Building Permit FAQ

Do I need a building permit in Gaston, OR?

Gaston publishes a city building permit application for new construction, additions, alterations, replacement work, demolition, accessory buildings, multi-family work, and commercial or industrial work. It also publishes a separate excavation permit form.

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

The minimum permit fee is Not publicly summarized on the reviewed pages.. Fees are calculated as: The building permit application indicates fees are based on the value of the work. Excavation permit form states current fee schedule is available from the city.. Plan check fee: Not clearly summarized on the public pages reviewed.

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

1. Download the city permit form for the project type from the official site. 2. Submit the form by mail, fax, email, or directly to Gaston City Hall. 3. Attach the required project information, valuation, contractor information, and drawings where required. 4. Pay permit fees before approval. The excavation permit form states fees must be paid before approval and instructs applicants to contact the city for the current fee schedule. 5. Receive signed permit approval from the city. 6. Confirm inspection steps with city staff because the public site does not post a full inspection handbook.

How long does it take to get a building permit in Gaston, OR?

Typical processing time is No public estimate located. Thin data..

What work is exempt from building permits in Gaston, OR?

The following work is generally exempt: Oregon residential permit exemptions may apply to some small detached structures, low fences, and limited minor work.; Gaston may still require local approval for excavation, grading, or right-of-way impacts..

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

Inspections can be scheduled via: Confirm directly with city staff.

Other cities in Washington County