Is there a buried oil tank in this West Babylon house, and what happens if there is?

A seller at the kitchen table with the disclosure form

Every seller I sit down with in West Babylon eventually gets to the same line on the Property Condition Disclosure Statement, the one asking about tanks and petroleum products. Some know right away there's a tank still under the side yard from before the house switched to gas. Others genuinely don't know, because the tank was capped and forgotten two owners ago. Either answer is fine as long as it's honest, but "I don't know" is not the same as "there isn't one," and a buyer's inspector or attorney will usually want that resolved before the deal moves to contract.

Why this comes up so often in this particular town

I've closed six houses in West Babylon. The median year built across those six is 1953. The oldest was built in 1925, the newest in 1962, and all six, every one of them, went up before 1970. That matters here specifically because a house built in that era was almost always heated with oil originally, and when Long Island homes converted to gas over the decades that followed, the old oil tank did not always come out of the ground. Sometimes it was drained and abandoned in place. Sometimes it was pulled. Sometimes nobody wrote down which. On a block of houses from the 1920s through the 1960s, a buried tank is not a strange thing to find. It's a routine thing to check for.

What the rule actually is

New York changed the disclosure law recently, and the change matters for anyone listing now. Since March 20, 2024, sellers of one to four family residential property can no longer hand a buyer a $500 credit instead of filling out the disclosure form. As one industry FAQ put it, effective March 20, 2024, an amendment to New York Real Property Law Chapter 50, Article 14 will make two key changes to the law in New York regarding the Property Condition Disclosure Statement, eliminating the seller's option to provide a $500 credit at closing in lieu of delivering a signed and completed form, and adding new flood related questions. That means every seller now has to actually answer the questions on the form, tank included, there's no more paying to skip it.

The form itself, DOS-1614-f, asks sellers about petroleum products and environmental conditions on the property, and it is explicit that this is a statement of what the seller actually knows, not a guarantee. The form states plainly:

This Disclosure Statement is not a warranty of any kind by the seller or by any agent representing the seller

New York Department of State, Property Condition Disclosure Statement (DOS-1614-f)

Sellers sometimes think writing "Unkn" for unknown is a safe way to avoid the tank question. It isn't automatically. A Q&A on the statute put it this way:

Checking "Unkn" will not protect the seller if it can be proven that the seller did actually know

Real Property Law §462(2), summarized in Abstracts Inc. Friday Fast Facts, March 15, 2024

On the environmental side, Suffolk County has its own layer on top of the state disclosure law. Suffolk County Sanitary Code Article 12 regulates underground fuel storage, and under the code, a tank is considered underground when 10 percent or more of it sits below the final ground level , which is a broader definition than most people assume, it catches partly buried tanks too, not just ones fully underground. Suffolk is one of only three counties in the state, along with Nassau and Westchester, that regulate smaller residential heating oil tanks at all. As New York's own environmental agency notes, most home heating oil tanks are not regulated by New York State's Petroleum Bulk Storage regulations because they have a capacity of less than 1,100 gallons, but some delegated counties have regulations that do apply, and homeowners in Nassau, Suffolk, or Westchester are encouraged to contact the county Department of Health to determine whether such smaller tanks are regulated. West Babylon is in Suffolk, so this is not a hypothetical, it's the county's actual rule.

What it costs and how long it takes

Finding out whether a tank exists, when nobody is sure, usually starts with a tank sweep, a scan of the property with ground penetrating radar or a metal detector to locate a buried tank without digging. That step is quick, often done in an hour or two.

If a tank turns up and has to come out, the numbers vary by size, depth, and what the soil around it looks like. General removal cost guides put underground oil tank removal in the range of roughly $400 to $3,400 depending on size, location, and condition, with underground removal costing more than an above ground tank because of the excavation involved. A contractor guide focused on tougher underground jobs puts a straightforward underground removal at $1,000 to $5,000, and warns that a removal complicated by a tight lot or a deep tank can run $4,000 to $5,000 before contamination even enters the conversation. A Long Island specific tank company gives a lower anchor point, stating that above ground removals run roughly $408 to $1,001 with an average around $696, while underground tank removal costs start around $2,500 and climb from there depending on size and location.

If the tank has leaked, the cost changes entirely, and so does the timeline. New York State runs an oil spill fund, financed through Navigation Law, and the Comptroller's office explains that homeowners who discover a spill, including home heating oil, should report it within two hours to the state's 24 hour Spill Hotline. Clean up itself can take anywhere from a few weeks for a small, contained spill to months if soil or groundwater is affected. The state Department of Health notes that even a modest quantity of oil can cause real damage, observing that a small spill can destroy belongings, pose health risks, and cause environmental damage depending on size and location, which is part of why lenders and attorneys treat any confirmed leak as a serious item, not paperwork.

There is a small offset worth knowing about. Suffolk County offers a rebate for homeowners who properly close out a residential tank. The county code states that Suffolk has established a policy of awarding eligible homeowners an incentive or rebate of $100 for the closure of residential fuel oil storage tanks with a capacity of 1,100 gallons or less, upon verification that the tanks were replaced, abandoned or removed in accordance with Article 12 of the Sanitary Code. It won't move the needle on the bigger removal costs, but it's real money back and it requires proper documentation either way, which you want on file for the closing regardless.

What to do about it, before the house goes on the market

1. Ask the seller directly, and early, whether the house was ever oil heated and whether the tank was ever removed. Pull any paperwork from a prior conversion or removal if it exists.
2. If there's no clear answer, get a tank sweep done before listing. It's the cheapest step in this whole process and it turns "I don't know" into an actual answer on the disclosure form.
3. If a tank is confirmed, get a removal quote from a licensed Suffolk County tank contractor so you know the real number, not a guess, before a buyer's attorney raises it at contract.
4. If soil testing comes back clean, keep that paperwork. It is often the single document that keeps a deal from stalling at the attorney review stage.
5. If there's contamination, loop in an environmental consultant and the seller's attorney immediately, and understand that Navigation Law's spill reporting requirement applies regardless of whether the house is for sale.
6. File for the Suffolk County closure rebate once the tank is properly closed, replaced, or removed, since it requires the same documentation you'll want anyway.