When you compare two cabins near Tower, who owns the propane tank behind them? Most buyers never ask, and the listing rarely says. This October it matters more than usual. The heating line on a listing sheet usually gets a quick glance between bedroom count and shoreline footage. This winter it can move a property's yearly carrying cost more than a modest gap in asking price.
On October 1, 2026, the Timberjay reported that fuel oil delivered to Tower was running about $6 a gallon or higher. At that price, filling a typical 250-gallon tank costs $1,500 or more. With many homes needing several fills, the paper estimated a season of heating could run $5,000 or more. In the same story, one area propane supplier put its price at $1.99 a gallon, about 30 cents above the same time last year.
Those two numbers set up the rest of this post. Before getting to the math, though, look at the paperwork. The fuel question tends to catch buyers off guard late in a deal, after the price is already agreed.
The Tank Behind the Cabin May Not Come With the Cabin
The propane tank on a Lake Vermilion property may belong to a propane company and not to the seller, and Minnesota law treats that as a real limit. Under Minn. Stat. § 299F.40, anyone other than the owner needs the owner's written authorization to fill a propane container marked with the owner's identifying mark. The Minnesota Attorney General's propane guide puts it plainly. If you rent or lease your tank, you may only fill it with propane from that company. If you own it, you can shop among suppliers.
For a buyer, this means the cabin's heating cost is partly set by a contract you didn't sign. The $1.99 figure in the Timberjay is one supplier's price. A leased tank ties you to whatever its owner charges. The Attorney General's office notes that some companies may charge "up to several dollars more per gallon than their competitors on the exact same day." It also says that at some companies, the per-gallon price is negotiable.
Fees are the second layer, and they hit second homes hardest. The Attorney General lists charges to ask about when comparing suppliers. They include low-use or no-use fees, delivery fees, charges for filling only part of a tank, tank pick-up fees, early termination fees, and equipment removal charges. A cabin that sits mostly empty from November to May is exactly the kind of account a low-use fee is built for. The same guide warns that some companies charge high tank pick-up fees to discourage customers from switching. It also says you may be able to buy your existing tank from your current company.
No standard fee amounts turned up in our research, and supplier terms vary. That's why the questions belong early in a transaction, before the inspection period runs out:
- Who owns the propane tank, and is the name of the company on it?
- If it's leased, what are the annual rent, the minimum-use terms, and the pick-up or termination fees?
- Is the seller willing or able to transfer the lease, or to buy the tank out before closing?
- Which suppliers serve the property? COMO Oil and Propane, for example, keeps a Tower location page.
When the Heat Comes From an Oil Tank
Fuel oil is a smaller share of homes, but not a small one around here. The Timberjay reported that only about 2% of Minnesota homes heat with fuel oil. Estimates in St. Louis County run as high as 10 to 20%. Many of those homes are older, often with less insulation and older furnaces. Anyone touring older year-round houses and cabins between Tower and Soudan should expect to see some of them.
An oil-heated property comes with a disclosure rule of its own. The Minnesota Pollution Control Agency's heating oil tank fact sheet says that when property with a heating oil tank is sold, the seller must tell the buyer about the tank in writing before closing. After the sale, the buyer is responsible for notifying the MPCA of the change in ownership.
Buried tanks that are no longer in use bring up a separate question. The MPCA says heating oil tanks aren't currently subject to technical closure requirements. Even so, it strongly recommends properly closing them when they're taken out of service, because an abandoned tank will eventually leak and collapse as it corrodes. Permanent closure means either filling the tank in place with grout or hardening foam or removing it. The tank and piping should be emptied and cleaned first, and soil sampling should be done around the site. Contractors who permanently close a heating oil tank must be certified by the MPCA, and the agency must get notice at least 10 days before the work starts.
A buyer who finds an old fill pipe in the yard of a house now heated some other way has a real question to raise. A buyer looking at a house that still runs on oil has a different one. At this fall's prices, what does a season of heat cost?
The Math Behind "Twice as Expensive"
Price per gallon understates the gap, and also overstates it, until you adjust for two things. A gallon of fuel oil holds more heat than a gallon of propane. The U.S. Energy Information Administration uses 138,500 Btu per gallon for heating oil and 91,452 Btu per gallon for propane. Furnace efficiency then works the other way. The Timberjay reported that propane furnaces tend to run at about 95 to 98% efficiency, while most fuel oil furnaces run at 80 to 90%.
Here's what those inputs produce at the local prices reported on October 1, 2026. These are our own estimates from the published figures, not supplier quotes:
| Fuel | Reported local price, Oct. 2026 | Btu per gallon | Furnace efficiency | Est. cost per million Btu of usable heat |
|---|---|---|---|---|
| Fuel oil | about $6.00/gal | 138,500 | 80% to 90% | about $48 to $54 |
| Propane | $1.99/gal | 91,452 | 95% to 98% | about $22 to $23 |
That works out to fuel oil costing a little over twice as much as propane for the same heat delivered into the house. It lines up with the Timberjay's own finding that propane is running at less than half the price of fuel oil for equivalent heating capacity.
Applied to the Timberjay's $5,000 oil season, the gap gets concrete. At $6 a gallon, $5,000 buys roughly 833 gallons of oil. Delivering the same usable heat through a typical high-efficiency propane furnace at $1.99 would take around 1,100 gallons of propane, or roughly $2,200. Your house, thermostat and winter will produce different numbers. The scale of the difference is what to carry into a comparison: in this example, around $2,800 for one heating season.
The oil price also didn't come out of nowhere. The EIA's most recent statewide reading, for March 30, 2026, had Minnesota residential heating oil at $4.245 a gallon, up $0.721 from a year earlier. Propane was at $2.056, down slightly year over year. Those statewide figures exclude taxes and come from a different date than the local delivered quote, so they show direction, not a side-by-side comparison. The EIA's weekly heating-season survey has its next release scheduled for October 7, 2026.
Putting the Fuel Line Next to the Price
Picture two cabins near Tower with similar frontage and condition, and assume both are heated through the winter. One runs on owned propane, and the other on fuel oil through an older furnace. At October 2026 prices, the oil-heated one could plausibly cost a few thousand dollars more to heat each year. That's a recurring cost, it repeats every winter fuel stays where it is, and it never appears in the asking price. It belongs alongside property taxes and insurance in the real cost of owning a Lake Vermilion cabin.
The propane side isn't a single number either. An owned tank lets you request quotes from more than one supplier, as the Attorney General recommends. A leased tank with a low-use fee on a mostly seasonal cabin adds costs that never show up in the per-gallon price. Two propane cabins can end up further apart on cost than the fuel type alone suggests.
One more item is easy to overlook at the closing table. Minnesota's seller disclosure statute requires sellers to disclose known material facts that could significantly affect the ordinary use of the property. It doesn't set any formula for crediting fuel left in the tank at closing. With a 250-gallon oil tank worth $1,500 or more when full at this fall's prices, whether the remaining fuel is credited, prorated or simply left behind is something to settle in the purchase agreement.
Quick Answers
Does Minnesota require sellers to say who owns the propane tank? Our research didn't find a state rule requiring that specific disclosure. The general disclosure duty covers known material facts, so the most reliable route is to ask directly and get the answer in writing.
Can I switch propane suppliers right after buying? Only if you own the tank or arrange a new one. A leased tank can only be filled by the company that owns it, and that company may charge pick-up or termination fees.
Who handles the MPCA paperwork on a heating oil tank? The seller gives written notice of the tank to the buyer before closing. The buyer notifies the MPCA of the ownership change after the sale.
Is there help for households struggling with heating bills? The Timberjay reported that the Arrowhead Economic Opportunity Agency runs the Energy Assistance Program in this region. It is currently capped at $1,400 per household, with an average grant of $500 to $600, and applications opened October 1.
If you're comparing cabins around Tower this fall, Vermilion Real Estate Services can help you get answers on tank ownership, fuel type and the oil-tank paperwork while there's still time to negotiate. Browse current Tower homes for sale, then make your cabin dream a reality. Schedule a showing and bring your heating questions with you.
This article is general information, not legal, tax or financial advice. Consult a qualified professional about your situation.
