Flammable liquid tanks
Check jurisdiction and zoning to determine whether your property is located in unincorporated King County or is located within city limits.
No pre-application meeting required
Apply online or download application materials
Visit MyBuildingPermit.com to apply online. Select; King County | Fire | (Project Type) | (Activity Type) | Storage Tanks.
Fire System Packet; Fuel Tanks, Installation and Relocation or Decommissioning Underground Fuel Tanks
Important note: For new or relocated fuel tanks, a gas piping permit must be obtained from the Seattle King County Department of Public Health, Environmental Health.
King County will perform a review of the application to ensure code compliance.
King County inspects work to ensure code compliance.
Gas piping inspection must occur prior to inspection of your LPG tank permit, call 206-296-4932 to schedule an inspection.
Keep final plans and permits displayed on-site!
Approved building and land use permits must be displayed prominently on construction and development sites.
Maintaining these records on-site is the responsibility of the applicant and/or contractor.
Tools and Resources