Oil tank services on Long Island. Inspection, Roth and Granby replacements $2,500-$4,500, safe abandonment of buried tanks.
A tank inspection runs $150–$300. Replacing an aboveground tank with a new Roth or Granby costs $2,500–$4,500 installed, and abandoning a buried tank in place runs $1,500–$3,000. Every price is quoted in writing before work begins.
An aboveground tank in the basement or against the house fails visibly — weeping seams, rusted legs, a wet spot under the valve — and it fails from the inside out, because condensation collects on the tank floor where you cannot see it. A buried tank fails silently, and that silence is the problem: leaks announce themselves through fuel usage that will not reconcile, water in the oil, or a remediation letter after a neighbor's discovery. Much of the older housing stock from Glenwood Landing along the North Shore down through central Suffolk still sits over original steel tanks from the era when burying them was standard practice. If your house predates 1975 and nobody can tell you where the old tank went, that question is worth answering before a buyer's attorney asks it for you.
The stakes have grown in recent years. Carriers writing homeowner policies on Long Island increasingly ask the age, type and location of oil tanks at renewal, and a buried steel tank of unknown vintage can hold up a closing while attorneys argue over who pays for testing. Sellers who address it before listing keep their leverage; sellers who discover it in contract do not. An inspection report answers the question inexpensively and on your schedule instead of a buyer's.
Our inspection covers the tank shell, legs and seams, fill and vent piping, the gauge, fuel lines and filter — the whole path from delivery truck to burner. When replacement is the verdict, we install Roth and Granby tanks, the two names that dominate modern residential oil storage for good reason: Roth's double-wall polyethylene-in-steel design carries containment built in, and Granby's coated steel tanks are the standard workhorse across Long Island. A replacement in Coram or anywhere else in our area is typically a single day, including pumping the old tank, transferring usable fuel, swapping the lines and filter, and disposal. Insurance companies increasingly ask the age and type of your oil tank at renewal; a new double-wall tank turns that conversation from a problem into a checkbox. We also fit gauges and low-level alarms during the same visit, inexpensive protection against the runouts that pull sludge through a fuel system. Tank visits pair naturally with the annual tune-up covered on our oil burner service page, and we schedule them together whenever we can.
Suffolk County has specific expectations for underground tank closure, and East End homeowners from Remsenburg outward deal with them at nearly every property transfer. Done properly and documented, tank closure is routine; done informally, it resurfaces at the worst possible moment in a sale.
Underground tanks are regulated for a reason; the EPA’s underground storage tank program outlines the leak risks that make proactive inspection worth far more than it costs.
| Job | Typical Long Island Price | Notes |
|---|---|---|
| Tank inspection | $150 – $300 | Shell, legs, lines, filter, fill and vent, written report |
| Aboveground tank replacement | $2,500 – $4,500 | Roth or Granby, installed; old tank removed |
| Buried tank abandonment in place | $1,500 – $3,000 | Pumped, cleaned and filled per county requirements |
| Fuel line or filter work | $189 – $450 | Total, including the service call |
Ranges reflect typical Nassau and Suffolk pricing. Your exact price is quoted upfront after diagnosis. Prices as of August 2026.
On aboveground tanks: wet seams, blistered paint, rust at the legs, oil odor, or a sagging bottom. On buried tanks: unexplained fuel usage, water in the oil, or age alone past 25–30 years for bare steel. An inspection settles the question for $150–$300 with a written report.
$2,500–$4,500 installed on Long Island for a new Roth or Granby tank, including pumping and removal of the old one, fuel transfer, new lines and filter, and leak testing. Tanks in tight crawl spaces or difficult locations price at the upper end.
The tank is pumped dry, cleaned of sludge, and filled with an inert material so it can never leak or collapse, with documentation for your records. It is the standard treatment for buried tanks when converting to gas or replacing with an aboveground tank, and it typically costs $1,500–$3,000.
Abandonment in place is the common choice on Long Island because excavation near foundations, driveways and landscaping is disruptive and costly. Full removal makes sense when soil testing is wanted or a sale demands it. We explain both paths and price them before you commit to either.
Increasingly, yes. Many carriers ask tank age, type and location at policy renewal, and buried steel tanks can complicate coverage or a home sale. A documented inspection, a modern double-wall replacement, or formal closure paperwork resolves the issue in almost every case.
Aboveground steel tanks typically last 20–30 years, with indoor tanks outlasting outdoor ones. Modern double-wall tanks like the Roth line are designed for longer service with containment built in. Buried bare-steel tanks are the short straw; past 25 years, they are on borrowed time.
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