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What You Must Disclose About an Oil Tank When Selling a Salem Home

Oregon law makes you disclose a known oil tank when you sell a Salem home. What the ORS 105.464 form asks, how to answer Yes, No, or Unknown honestly, and the buyer revocation risk.

real-estate 2026-06-27 8 min read

Selling a Salem home with a heating oil tank starts with a single legal duty: if you know the tank is there, you have to say so. Oregon's Seller's Property Disclosure Statement asks every residential seller about underground storage tanks, and how you answer that one line carries more weight than most sellers expect. This covers what the form asks, how to answer it honestly, and how to keep a disclosed tank from sinking the sale.

The Oregon disclosure form, and the tank question on it

Almost every resale of an Oregon home runs through the Seller's Property Disclosure Statement set out in ORS 105.464. It is a long form of questions about the property, answered on the basis of the seller's actual knowledge, and one of those questions asks plainly whether there are any tanks or underground storage tanks on the property. A buried heating oil tank, the kind common under pre-1980 Salem homes, falls squarely inside that question.

The form gives you three answers: Yes, No, or Unknown. The choice is not cosmetic. Answering No when you know a tank is there, or hiding behind Unknown to dodge something you actually know, is the kind of misrepresentation that can be treated as fraud and follow you well past closing. The safe principle is simple: disclose what you know, and do not pretend not to know what you do.

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How to answer Yes, No, or Unknown honestly

If you know a tank exists, whether it is in use, sitting abandoned, or already decommissioned, the answer is Yes, with a short note on its status. If you have lived in the home through a full heating history and there is no tank and never was, No is defensible. Unknown is for the genuine grey area: an older Salem house you bought recently, a heating system that was already gas when you arrived, and no paperwork either way.

  • Yes: a tank you know about, in any state. Note whether it is in use, abandoned in place, or decommissioned.
  • No: only when you actually know there is no tank, not as a hopeful guess.
  • Unknown: a real grey area where you have no knowledge either way, expecting the buyer to look into it.

An Unknown answer is honest, but it is also an invitation. A careful buyer reads Unknown on a 1955 Salem home as a reason to order a tank sweep, and you lose control of the timing. That is why many sellers run down the question themselves first, often by checking property records or commissioning a locate, so they can disclose a clear Yes or No instead of handing the buyer an open file.

What "actual knowledge" means on the form

The disclosure statement is built around what you actually know, not a guarantee about the property. Oregon does not require a home seller to go digging for a tank they have no reason to suspect, and answering Unknown on a house whose heating history you genuinely never learned is a fair use of the form. What you cannot do is treat Unknown as a shield for something already in front of you.

Knowledge reaches you in ways that are easy to forget at the kitchen table. A prior inspection report that flagged a fill pipe, a neighbor who mentioned the oil furnace the house used to run, a decommissioning you paid for years ago, or a line in your own purchase paperwork all count. Once a fact is known to you, the honest answer follows it. If you are unsure whether scattered hints add up to knowledge, the safe reading is to disclose what you have seen and let the buyer weigh it.

Why the answer can end the sale: the five-day window

Oregon law gives the buyer a specific exit tied to your disclosure. Under ORS 105.475, once you deliver the disclosure statement the buyer has five business days to revoke their offer, with no penalty and a full return of their deposit. A heating oil tank revealed for the first time inside that window is exactly the kind of surprise that triggers a revocation, because the buyer suddenly faces an unknown cost and an environmental question they did not price in.

Handle the tank early and that five-day clock works for you instead of against you. A tank disclosed as decommissioned, with documents attached, reads as a closed matter rather than a fresh risk. The same fact, dropped on a buyer cold mid-escrow, reads as a reason to walk. Nothing about the tank changed; the timing and the paperwork did.

Turn a disclosed tank into a documented one

The strongest position is to disclose a tank you have already dealt with. If the tank is decommissioned to standard, you can hand the buyer the DEQ Decommissioning Report that the Oregon program keeps on file, along with the soil results, so Yes comes attached to proof rather than to questions. Working through the Salem oil tank decommissioning checklist before you list is the cleanest way to get there.

A documented clean soil test on a Salem oil tank is what reassures the buyer's lender and title company that the disclosed tank is not hiding a release. For the full real-estate playbook around timing, lender requirements, and contingency language, the selling or buying a Salem home with an oil tank guide walks through how these pieces fit a closing timeline.

The disclosure rule is statewide, so it reads the same whether your home sits in Salem proper, Keizer, or across the river in West Salem. What changes with location is only where the permit and decommissioning records live, not whether you owe the buyer an honest answer about the tank.

What a disclosed tank does to the deal

Disclosing a tank does not have to end a sale, and it usually does not when the tank is handled before the form goes out. Inside the five-day window a buyer can walk, but the more common response on a tank that is already decommissioned and documented is that the buyer reads the report and moves on. The disclosure becomes a closed item rather than an open risk.

Where a live or unconfirmed tank is disclosed cold, expect the conversation to turn to who handles it and when. Buyers commonly ask the seller to decommission before closing, request a price credit to cover the work, or propose an escrow holdback so the funds are set aside until the tank is dealt with. None of those are disasters, but each is easier to negotiate from a position of having already done the work than from the back foot mid-escrow.

Frequently asked questions

Do I have to disclose a buried oil tank when I sell my Salem home?

Yes, if you know about it. Oregon’s Seller’s Property Disclosure Statement under ORS 105.464 asks directly whether there are any tanks or underground storage tanks on the property, and you must answer based on your actual knowledge. A known heating oil tank, whether it is still in use, abandoned, or already decommissioned, has to be disclosed.

Can I just answer "Unknown" to the oil tank question?

Only if you genuinely do not know. The form lets you answer Yes, No, or Unknown, but using Unknown to avoid revealing something you actually know can be treated as fraud. If your home is a pre-1980 Salem house and you have no idea how it was first heated, Unknown can be honest, but it invites the buyer to investigate, so most sellers prefer to settle the question before listing.

What happens after I hand the buyer the disclosure statement?

Under ORS 105.475 the buyer has five business days after delivery of the disclosure to revoke their offer and get their deposit back. A surprise oil tank disclosed for the first time inside that window is a common reason a buyer walks. Resolving the tank, or at least documenting it, before you list keeps the disclosure from becoming a deal-breaker.

I already decommissioned the tank. Do I still disclose it?

Yes, and you disclose it as decommissioned with the paperwork to back it up. A properly closed-out tank is far easier to disclose than a live unknown, because you can hand the buyer the DEQ Decommissioning Report and the soil results instead of an open question. A clean, documented decommissioning usually moves the tank from a problem to a footnote.

Does the disclosure rule apply to homes in West Salem and Keizer?

Yes. The ORS 105.464 disclosure requirement is a statewide Oregon law, so it applies the same in West Salem, Keizer, and the rest of the Salem area regardless of which county records the parcel. What changes by location is where the permit and decommissioning records live, not whether you have to disclose.

Document a Salem tank before you list

Speak to a Salem-area decommissioning crew. Free site survey.

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If you are getting ready to sell a Salem-area home and want a known or suspected oil tank confirmed, decommissioned, and documented before the disclosure goes out, use the form on this page for a fixed-price quote from a licensed Oregon provider.

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