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When a permit is required
Permit triggers and exempt work for Kelso
Building permits are required for all construction within the City of Kelso.
Note: Contact the Building Department at (360) 423-9922 to verify if your project requires a permit. The purpose of permits is to ensure structures are built safely and in accordance with state and local codes.
- Completed building permit application
- Construction plans and specifications
- Site plan showing property dimensions and structure locations
- Proof of contractor registration with Washington State L&I (if applicable)
- Payment of fees
- Building code
- 2021 International Building Code (IBC) with Washington State amendments; 2021 International Residential Code (IRC); 2021 International Mechanical Code (IMC); Uniform Plumbing Code (UPC); 2021 International Fire Code; Washington State Energy Code
- Permit validity
- Contact City for permit validity period.
- Contractor requirements
- All contractors must be registered with Washington State L&I and must comply with City of Kelso requirements.
Source: Kelso Building Department - Community Development Department ↗
Application process
Typical processing: Varies by project complexity. Contact department for current timeframes.
- 01 Determine your permit type. Access the Kelso Online Permit Center for eligible applications.
- 02 Prepare required documentation: completed building permit application, construction plans and specifications, site plan showing property dimensions and structure locations.
- 03 If applicable, provide proof of contractor registration with Washington State L&I.
- 04 Submit application with all required documents and payment of fees through Online Permit Center, in person, or by mail.
- 05 Review available plan requirements documents (Commercial Building Plan Requirements, Residential Building Plan Requirements, Site Plan Submittal Requirements).
- 06 City staff reviews application for completeness and performs plan review.
- 07 Pay remaining permit fees upon approval and before beginning work.
Typical processing time: Varies by project complexity. Contact department for current timeframes.
Source: Kelso Building Department - Community Development Department ↗
Fee schedule
Kelso building permit fees
State Building Code surcharge: $6.50 per building permit. Residential multi-unit: $6.50 plus $2.00 per additional unit. Contact City for complete current fee schedule and payment methods.
Fees change periodically. Confirm at the official fee schedule ↗ before budgeting.
Required inspections
Scheduling and sequence
- (360) 423-9922 (phone)
- Kelso Online Permit Center (online)
Typical sequence: Inspections required at various construction phases. Final inspection required for certificate of completion.
Source: Kelso Building Department - Community Development Department ↗
Frequently asked
Common questions about Kelso permits
01 Do I need a building permit in Kelso, WA? ▸
02 How much does a building permit cost in Kelso, WA? ▸
03 How do I apply for a building permit in Kelso, WA? ▸
04 How long does it take to get a building permit in Kelso, WA? ▸
05 How do I schedule a building inspection in Kelso, WA? ▸
Educational reference. Permit rules and fees change — confirm current requirements directly with Kelso Building Department - Community Development Department before applying. Jaspector is not legal advice.