Seattle Oil Tank Records And What They Prove
A record search is usually the first thing anyone asks for and the most commonly misread document in the whole process.
- Published by
- City of Seattle
- Filed with
- Fire Department
- Report deadline
- 30 days
- Soil result included
- No
Oil Tank Decommissioning Records In Seattle
The City of Seattle publishes residential underground storage tank records as open data, searchable by address. What lands in it comes from the permit process: a decommissioning permit was issued, the work happened, and the certified decommissioner filed the report afterwards.
That makes it genuinely useful and frequently over trusted. It answers one question well, which is whether permitted work was filed for this address. It does not answer the two questions buyers actually care about.
What The Record Does Not Tell You
It Does Not Prove The Ground Is Clean
Seattle Fire Department guidance is explicit that fire code compliance requires neither a site plan nor soil samples. A decommissioning record is therefore a record of permitted work and nothing more. If contamination matters to the transaction, that is a separate test and a separate report.
It Does Not Prove The Tank Is Gone
Removal and fill in place are both decommissioning under the Seattle Fire Code. A record can mean a tank was lifted out and hauled away, or that it is still under the driveway full of sand. Read which method was used before treating the record as a clean sheet.
An Empty Search Is Not An All Clear
The dataset does not reach back through the entire history of Seattle housing stock, and unpermitted work never entered it. On an older house, a blank result is weaker evidence than a fill pipe in the side yard or capped copper running through the basement wall.
It Is Not The Document A Buyer Will Ask For
What changes hands at closing is usually the permit stamped Approved to Proceed and the decommissioning report, both held by the property owner. A screenshot of an open data row is not a substitute for either.
Reading A Result Before A Closing Date
If a record exists and names removal, the file is usually closed and the conversation moves on. If it names fill in place, expect the buyer’s side to ask a follow up question, because the tank is still there.
If nothing comes back and the house was built into the oil heating era, treat it as unanswered rather than answered. That is the point at which people call us, and it is the cheapest moment to deal with it. Selling with a tank covers how the timing usually works against a closing date.
Common Questions
- How do I find out if a Seattle house has an oil tank on record?
- The City of Seattle publishes residential underground storage tank records as an open dataset, searchable by address. It reflects what was filed with the Seattle Fire Department, so it shows permitted decommissioning work rather than every tank that has ever existed.
- What does it mean if there is no record for my address?
- It means nothing was filed that the dataset covers. That is not the same as no tank. Older abandonments predate the record keeping, and unpermitted work never entered it at all.
- Does a decommissioning record prove the soil is clean?
- No. The Seattle Fire Department states that fire code compliance does not require soil samples, so a decommissioning record is a record of permitted work, not a soil result.
- Can I get a copy of the decommissioning report?
- The certified decommissioner is required to give the property owner a copy within thirty days of finishing. If you are buying, ask the seller for that copy and the permit stamped Approved to Proceed.
Send The Address And We Will Check
We will tell you what the city holds for the property, what the record actually says, and what the next step costs. Written, by email.