Sources
Every fee, code section and program figure on this site traces to one of the documents below. Where a number carries a date, that is the date the source itself was published or revised.
CAM 5962, Decommissioning of Residential Heating Oil Tanks
Seattle Fire Department
Client assistance memo updated December 2017
Seattle Fire Code sections 5704.2.13 and 105.6.19, the ICC certified decommissioner requirement, the Approved to Proceed stamp, and the 30 day report deadline.
Residential Heating Oil Tank Decommissioning Permit Application, Permit Code 6103
Seattle Fire Department
Form revision 04/26
The $184.00 fee, the one to four residential unit and under 1,100 gallon scope, one permit per tank, and the notification rule if the work date moves.
Decommissioning Underground Fuel Tanks
King County Department of Local Services, Permitting Division
Handout dated June 2024
No fee and no inspection for the residential permit in unincorporated King County, the certified contractor requirement, and the rinse receipt and site plan handover.
Certified Residential Oil Tank Decommissioning Contractors
King County Department of Local Services, Permitting Division
Retrieved August 2026
The list of contractors the King County Fire Marshal has certified to decommission residential tanks in unincorporated areas.
The public record of residential tank decommissioning filed with the Seattle Fire Department.
Heating Oil Tank Decommissioning
Washington State Pollution Liability Insurance Agency
Retrieved August 2026
The 2021 International Fire Code section 5704.2.13 baseline, the close in place requirements, and the five year record retention rule.
Heating Oil Loan and Grant Program
Washington State Pollution Liability Insurance Agency
Retrieved August 2026
The $75,000 program maximum, the cleanup grant up to $60,000 for a single tank, the planning assessment grant up to $7,000, and the spring and winter application cycles of 45 days each.
The instant rebate for households converting from oil heat, and the income qualified bonus.
How retiring your oil heating tank and transitioning to electric heat protects our homes, water and climate
City of Seattle, Greenspace
Published November 2025
Fewer than 10,000 oil heated homes remain in Seattle, out of more than 180,000 homes.
The 24 cents per gallon heating oil tax passed in 2019 was delayed three times and then repealed. It is not in effect.
Release reporting and cleanup obligations, which sit outside the fire code permit.
Cost bands quoted anywhere on this site are attributed in the text to the third party that published them. They are not our prices, and we do not publish a price list. Ask for a written quote and you get a figure for your property.