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Streets and Utility Permits

Building Permits



An application for building permit, whether it be a commercial building, dwelling, roof, furnace, demolition or other, must be accompanied by:

Please - No pencil when preparing drawings and filling out forms

  • Building Permit Application Form - 1 original & 2 copies
  • Site plans and elevations - 3 sets
  • Structural plans  - 2 sets
  • Other documents – 2 or more sets (contact the Planning Department to discuss)
  • Master Land Use Application,  if you are concurrently submitting other land use applications - 1 original & 2 copies. 

Answer all questions and fill in all sections.  Please call or email staff, if you have questions or alternatively would like to submit your application electronically. 

Sign Permit Sign Code Review:  Application forms for sign code review are available at on the Permit Center/Land Use Permit Forms webpage. 

Preapplication Meeting:  You may schedule a preapplication meeting with staff prior to submittal of your permit. Complete a Preapplication Form as listed on the Permit Center/Land Use Permit Forms webpage and submit together with plans and fee.


Apply at Dayton City Hall - Planning Department - 111 S. 1st Street, Dayton, WA

Monday-Thursday8:30 a.m. to 4:00 p.m. or by appointment on Fridays or evenings. 

Building permit fees are paid when the permit is issued, not at submittal.  For a building permit fee estimate contact Columbia County Building Dept.

Fees for Planning and Public Works are paid at the time of submittal, if required, for environmental reviews, or other applications associated with the project. Planning and Public Works application forms, and city fee schedule are available on the Permit Center webpages. City engineering review for streets and utilities is privately contracted and the applicant is responsible for the cost of review time, meetings, etc.


Planning/Zoning/SEPA/Environmental: Staff reviews site plans, setbacks, zoning, historic preservation, flood hazards, shorelines, critical areas, and SEPA (State Environmental Policy Act).  These review(s) occur prior to building permit issuance. 

Streets/Water/Sewer:  Public Works reviews streets, street approaches, sidewalks, water, and sewer connections, on-site utility lines outside of structures and whether development may interfere with public utilities.  Separate applications are required to work in the right-of-way, and connection to city water and sewer (See Public Works webpage for applications).

Building/Fire/Plumbing/Mechanical:  Plans will be routed to the Columbia County Building Dept.* for structural, building, fire, plumbing and mechanical reviews and permits. You will be contacted if there are any questions regarding your plans. Once approved, a set of plans will be returned to you when your permit is issued. (*On contract with Dayton for Building Services)


The Columbia County Building Dept. will notify the applicant when the permit is ready for issuance, once the permit has been reviewed and approved.  The building permit/inspection fee must be paid to the Col. Co. Bldg. Dept.  They accept checks or exact cash. Please make checks payable to the Columbia County Treasurer before or at the time the permit is issued and the fee is non-refundable.  

Building Permit pickup is located at the Col. Co. Bldg. Dept., 114 S. 2nd Street, Dayton, WA 99328.


The applicant is responsible to schedule inspections.  Please note that staff workloads may not provide sufficient time for all requested inspections.  Staff will make every effort to accommodate your request.

Planning Inspections:  The Dayton Planning Department will notify the applicant and Columbia County in writing if and when planning conditions or inspection(s) are required.  Such inspections may be needed in association with zoning, conditional use permit, SEPA mitigation, critical areas, historic preservation COA or other applications.  For Planning Dept. inspection appointments, contact: Karen Scharer, Planning Director, Email: This email address is being protected from spambots. You need JavaScript enabled to view it.,  PH: 509.540.6747

Public Works Inspections:  Separate inspections are required to work in the right-of-way, and connection to city water and sewer (See Public Works webpage for applications and Public Works Standards for construction projects).  Contact Jim Costello, Dayton Public Works Director, PH: 509.382.4571 or 509.382.2361

Building Inspections:  The permit will state the required building inspections.  Schedule inspections for Mon.-Fri. 7:30 a.m. to 4:00 p.m.  Please contact the Columbia County Building Dept. for inspections at least twenty four hours (1-day) before such inspection at PH: 509.382.4676.

Failure to obtain required inspections is cause for a permit to expire without final approval or Certificate of Occupancy.  Work performed without inspection and/or final inspection approval is a violation of City and Building Codes.  If a permit expires without renewal, a new application for permit must meet current codes/standards at the time of a complete application submittal.  A new application does not vest to previous codes/standards applied to the previous expired permit.


  • Karen Scharer, Planning Director, email: This email address is being protected from spambots. You need JavaScript enabled to view it. PH:509.540.6747. Office Hours are Monday-Thursday8:30 a.m. to 4:00 p.m. or Fri. by appointment.
  • Jim Costello, Dayton Public Works Director: PH509.382.2361. Mon.-Thurs. 8:00 am - 3:00 pm
  • Greg Abramson, Senior Planner/Building Inspector, Email:This email address is being protected from spambots. You need JavaScript enabled to view it.PH509.382.4676. Columbia County Building Dept., 114 S. 2nd Street, Dayton, WA 99328

Other Contact Information:

509-382-2131     Col. Co. Assessor’s Office (Tax parcel number information)

509-382-4541     Col. Co. Auditor’s Office (Vault/Recorded Plats)

800-547-9411     Department of Labor and Industries (Electrical permits, Factory Assembled Housing/MH Alteration permits, Contractor registration)

Call 811 or 1-800-424-5555     Call Before You Dig More Information Online



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