By Adam Chubbuck, Team Leader, Team Alpha Charlie of Douglas Realty. Retired U.S. Navy Chief. Licensed in Maryland and Virginia.
Maryland has a lot of older housing stock, and a fair amount of it was heated with oil at some point. Which means there are oil tanks out there, some still in use, some abandoned in place, and some buried in a yard where nobody remembers them.
This is a narrow topic that becomes enormous the moment it applies to you. Here is what matters.
Three Situations, Very Different Risk
An above-ground tank in use. In the basement or outside. Visible, inspectable, manageable. The least concerning version.
An above-ground tank no longer in use. Still there, probably still holding some product. Needs to be dealt with but it is visible and accessible.
A buried tank, in use or abandoned. This is the one that matters. An underground storage tank you cannot see, may not have records for, and which may or may not have leaked.
The risk is not the tank. It is contaminated soil. A tank that leaked can mean an environmental remediation, and remediation on a residential property is not a small number.
How to Find Out If There Is One
Buried tanks are frequently undocumented, so look for the signs.
Ask the seller directly, in writing. And ask what they know about previous owners.
Look for a fill pipe or vent pipe sticking out of the ground near the house, or a capped pipe coming out of a foundation wall.
Check the basement for an abandoned oil furnace, old supply lines running through a wall, or patched holes where lines used to be.
Look at the heating system history. A house built in the 1950s with a newer gas furnace heated with something before that.
Ask your home inspector to look specifically. Tell them you want them watching for evidence of a current or former oil tank. They are not going to excavate, but they know what to look for.
If there is reason to suspect a buried tank, a tank sweep is the answer. A specialist scans the property with metal detection or ground-penetrating equipment. It costs a few hundred dollars and it either finds something or gives you peace of mind.
Why Lenders and Insurers Care
This is where a tank goes from a maintenance question to a transaction problem.
Lenders. An underground storage tank, particularly an abandoned one or one with any evidence of a leak, can stop a loan. The lender is securing a mortgage against the property, and environmental contamination directly threatens that collateral. Some will require the tank be removed or properly closed before they will fund.
Insurers. Some carriers will not write a policy on a property with an unresolved buried tank, and coverage for tank-related contamination is often excluded from standard homeowner policies.
What to do: if a tank turns up, tell your lender and your insurance agent immediately. Do not wait and hope. Finding out in the final week that your loan will not fund is the worst version of this.
Your Options If There Is a Buried Tank
Removal. The tank is excavated and taken out, and the soil around it is inspected and tested. This is the cleanest resolution because it ends the question permanently.
Closure in place. Where removal is impractical, the tank may be emptied, cleaned, and filled with inert material under a documented process.
Which option is available and what is required depends on the situation and the governing rules, so this is a conversation for a licensed environmental or tank removal contractor and, where warranted, an attorney. Requirements for underground storage tanks in Maryland fall under the Maryland Department of the Environment, and you should verify what applies to your specific property with them directly rather than relying on any article.
The critical piece either way: get documentation. Whatever is done, you want written records showing what happened, when, by whom, and what the soil testing showed. That documentation is what protects you, and it is what your eventual buyer will ask for.
If You Are Buying
Make it a contingency item, not an afterthought.
Order a tank sweep if there is any reason to suspect one.
If a tank is found, do not close until it is resolved. Negotiate removal or closure at the seller’s expense before settlement, with documentation delivered to you. Taking a credit and handling it yourself afterward means you own the problem and whatever it turns out to cost.
Insist on soil testing results, not just a receipt saying a tank was removed. The tank is not the issue. The soil is.
Price the risk honestly. If a seller will not resolve it and you proceed anyway, you are accepting an unknown liability. Sometimes that is a reasonable trade at the right price. Go in with your eyes open.
If You Are Selling
Disclose what you know. Maryland sellers provide either a disclosure or a disclaimer under Section 10-702, and either way you must disclose material latent defects you actually know about. A buried tank you know about is exactly that kind of thing.
If you know there is a tank, deal with it before you list. It will surface during the buyer’s due diligence, and discovering it mid-contract gives the buyer leverage and a reason to walk. Handling it in advance on your schedule costs less and removes the biggest objection a buyer could raise.
Find your documentation. If a previous owner removed or closed a tank, those records are worth real money at the negotiating table. Look for them before any clean-out.
The Short Version
Visible above-ground tank in use: manageable, inspect it like any other system.
Any buried tank: stop and resolve it before you close. Get it removed or properly closed, get soil testing, and get documentation.
Suspicion but no confirmation: order a tank sweep. A few hundred dollars against a potential five-figure problem is an easy call.
Questions About a Specific Property?
If you are looking at an older Maryland home and a tank has come up, or you suspect one might, reach out to Team Alpha Charlie of Douglas Realty. I will help you get the right specialists involved and make sure it gets resolved before settlement rather than after.
Quick Answers
How do I know if a house has a buried oil tank?
Ask the seller in writing, look for an unexplained fill or vent pipe in the yard or coming out of the foundation, check the basement for an abandoned oil furnace or capped supply lines, and consider the age of the house against its current heating system. If there is reason to suspect one, order a tank sweep from a specialist.
Is a buried oil tank a dealbreaker?
Not necessarily, but it must be resolved before closing. The real risk is not the tank itself but contaminated soil if it leaked. Removal or proper closure with soil testing and written documentation is what resolves it.
Can an oil tank stop my mortgage?
It can. An unresolved underground storage tank, especially one with evidence of a leak, threatens the lender’s collateral, and some lenders require removal or closure before funding. Tell your lender and insurance agent as soon as a tank surfaces.
Who pays to remove an oil tank?
That is negotiable, and as a buyer you should push for the seller to resolve it before settlement with documentation delivered to you. Taking a credit and handling it yourself means you own whatever the actual cost turns out to be.
Does a home inspection find buried oil tanks?
Not reliably. An inspector may notice signs like an unexplained fill pipe or an abandoned furnace, but they do not excavate. A dedicated tank sweep using metal detection or ground-penetrating equipment is the way to actually find one.
Do I have to disclose an oil tank when selling in Maryland?
Maryland sellers provide either a disclosure or a disclaimer under Section 10-702, and under either one you must disclose material latent defects you actually know about. A buried tank you are aware of falls squarely in that category. Consult an attorney about your specific situation.
Underground storage tank requirements in Maryland are administered by the Maryland Department of the Environment, and applicable rules, removal and closure procedures, and reporting obligations depend on the specific property and tank. Verify requirements directly with MDE and consult a licensed environmental or tank removal contractor and, where warranted, an attorney. This is general information, not legal or environmental advice.
I am Adam Chubbuck, Team Leader of Team Alpha Charlie of Douglas Realty. Retired U.S. Navy Chief, licensed in Maryland and Virginia, and my team has sold in excess of 400 homes across the Baltimore to Annapolis corridor. Team Alpha Charlie is Zillow Preferred and serves buyers and sellers throughout Anne Arundel County, Howard County, Baltimore County, Baltimore City, and the surrounding markets, with deep experience supporting military, veteran, and Department of Defense families.
443-347-6692 | [email protected] | TACMD.com
Smile more,
Adam Chubbuck
