Do I Need a Tank Sweep Before Selling My House If Someone Thinks There Might Be an Underground Oil Tank?

September 15, 2026

Yes, you should get a tank sweep even if you are not sure a tank exists. If anyone involved in the sale, whether a buyer, realtor, or inspector, raises the possibility of a buried oil tank, a certified sweep gives you a definitive answer. A clean tank search results letter protects you and keeps the transaction moving forward without delays.

We recently spoke with a homeowner in the Garwood, NJ who was selling a family property. A realtor had mentioned seeing something in the front yard that looked like it could be a buried tank, though it may have been related to a water line. Rather than let that uncertainty stall the sale, the homeowner called us to schedule a tank sweep so they could get a clear answer and move forward with confidence.

That kind of proactive thinking is exactly right. Here is what you need to know.

What Does a Tank Sweep Actually Involve?

A tank sweep uses ground-penetrating radar and electromagnetic scanning equipment to detect buried metal objects underground, including oil tanks, without any digging. Our technician moves across the property and identifies anything beneath the surface that could be a tank.

The process is non-invasive and does not damage your lawn or landscaping. Once complete, we provide a tank search results letter documenting what was or was not found. That letter is typically what realtors and buyers want to see before closing.

What If the Object Turns Out to Be Something Other Than a Tank?

That happens more often than you might think, and it is exactly why a sweep is worth doing. Water lines, old pipes, and other buried utilities can look suspicious to an untrained eye. A professional sweep tells you definitively what is there.

If the scan confirms there is no oil tank, you have your documentation. If it does find a tank, you will want to know that before a buyer’s inspector does. Discovering a tank mid-transaction can cause delays, renegotiations, or a deal falling apart entirely.

Why Do Realtors Recommend Getting a Sweep Before Listing?

Experienced real estate agents know that an undisclosed or unverified buried oil tank is one of the most common reasons home sales get complicated in New Jersey. NJ has strict environmental regulations, and buyers are increasingly aware of the liability a buried tank can carry.

• A tank sweep completed before listing removes a major question mark for buyers
• It signals that you are a transparent, prepared seller
• If a tank is found, you have time to address it on your terms rather than under closing pressure
• A clean results letter can be included in your listing documentation

Our experienced environmental team has worked with homeowners and realtors across New Jersey for years, and we understand what buyers and their attorneys look for during due diligence.

What Happens If the Sweep Does Find a Tank?

Finding a buried tank is not automatically a disaster, but it does require action. The next step is typically oil tank removal, followed by soil testing to confirm there has been no leakage. If contamination is present, remediation may be required before the sale can proceed.

The earlier you know, the more control you have over the process, the timeline, and the cost conversation with the buyer. Waiting until a buyer’s inspector finds it puts you in a reactive position.

Frequently Asked Questions

How do I know if my property ever had an oil tank?

Many older homes in New Jersey used oil heat before converting to gas. If your home was built before the 1980s, there is a reasonable chance a tank was installed at some point. Check for an old fill pipe near the foundation, a vent pipe along the exterior wall, or ask a local environmental professional to take a look.

Is a tank sweep required by law to sell a home in New Jersey?

It is not always legally required, but it is frequently requested by buyers and their lenders. Many real estate contracts in NJ now include tank sweep contingencies. Having one done proactively removes that leverage from the negotiation entirely.

Can we schedule the sweep around our realtor’s availability?

Absolutely. We work with both homeowners and their real estate agents to coordinate timing. If your realtor wants to be present during the sweep, just let us know when you reach out and we will work around that.

Get Your Property Ready to Sell

If you are preparing to sell a property and want peace of mind before the listing goes live, contact us to get the process started. At Tank Solutions, we serve homeowners throughout Garwood, NJ and the surrounding area and we are here to make sure you have the information you need to close with confidence.