Florida generator guide

Bury the Propane Tank or Live With the 'Submarine' in the Yard?

Updated October 29, 2026

You're looking at a white steel tube the size of a small car, lying on its side next to your flower beds, and the first thing you think is: can't I just bury that thing? You can. But it doesn't vanish the way you're picturing, the ground in Florida pushes back harder than almost anywhere else, and the price gap is both smaller and bigger than you'd guess. Here's what hiding it actually buys you.

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About five minutes. No salesman, no all-day window.

First surprise: burying it doesn't make it disappear

Most people picture a buried tank as gone. Flat grass, no tank, like it was never there. That's not what you get.

After the hole is backfilled, a plastic dome still pokes up out of the lawn, mere inches above the surface, and that dome isn't decoration. It's the lid over your gauge, your fill valve, and your regulator, which the delivery driver has to reach every single time. So instead of a big white cylinder, you've traded down to something that looks like a stray manhole cover someone lost in your yard. Smaller, sure. Invisible, no.

And here's the thing people don't expect: it doesn't even get you out of the rules. In Florida a 125-to-500-gallon tank has to sit at least 10 feet from your house, any other building, and your property line, and that 10-foot rule doesn't care whether the tank is above the dirt or under it. Burying it doesn't let you tuck it tight against the house or snug up to the fence. The setback follows the tank down into the hole.

The price gap is smaller than the fear — until you read the fine print

The number that scares people off burial is usually a guess, and it's usually wrong. Above ground, a 500-gallon tank runs around $1,500 installed. Buried, HomeGuide pegs what most homeowners actually spend at about $1,900 for the same size tank. That's a few hundred dollars for the tank itself, not the doubling or tripling everyone braces for.

So why does anyone say burial is expensive? Because that $1,900 is the quiet version. The loud version shows up when the digging gets ugly. A buried tank needs a real excavation, and depending on your lot that same job climbs toward five thousand. You also can't take the tank you already own and drop it in a hole — a standard above-ground tank isn't built for it. Burial requires a tank manufactured, coated, and listed for underground service, so you're buying a different tank, period.

The real math isn't 'above ground is cheap, buried is a fortune.' It's 'buried is a modest premium on a calm lot, and a real one the second a backhoe hits something it doesn't like.'

Florida's twist: your buried tank wants to float

Here's where Florida stops being a normal state. Most of the country buries a propane tank and forgets it. We can't, because of the water table.

Propane weighs less than water. Dig a hole in a lot of Florida and that hole wants to fill with groundwater, and a buried tank sitting in wet ground will try to float right back up out of the lawn like a cork in a bathtub. So down here a buried tank has to be physically anchored to hold it in place. That same wet ground also eats the tank's rust protection faster — a buried tank relies on a sacrificial metal bag, an anode, that corrodes so the steel doesn't, and constant moisture burns through it quicker, which is why it needs testing every few years. One homeowner on a buried-tank video asked flat out, 'what did you put in so it wouldn't rust out?' That bag is the answer, and in Florida soil it's working overtime.

Which flips the whole 'out of sight, out of mind' pitch on its head. Above ground, you can see a problem. Buried, inspecting or servicing the thing can mean digging it back up. You hid the eyesore and bought yourself a maintenance item you can't see.

The only number that ends the argument: your actual address

Every figure above is a national average, and an average is just a shrug with a dollar sign on it. Whether burial makes sense for you comes down to things only your lot knows — how high your water table sits, how far the tank has to be from the house to clear that 10-foot setback, whether a machine can even reach the spot, and how much propane your standby generator will actually burn keeping the lights on.

That's the whole reason GENERasic doesn't hand out ranges. Give us your address and what you're protecting, and you get one committed, installed price for your home — above ground or buried — not a 'starting at' that balloons once the crew sees your yard. Punch in your address and get your price. Then you're deciding with a real number instead of a national guess.

Common questions

How much more does it cost to bury a propane tank than leave it above ground?

On a straightforward lot, not as much as people fear. A 500-gallon tank runs about $1,500 installed above ground and around $1,900 buried, per HomeGuide. The gap widens when excavation gets complicated — rock, roots, a high water table — which can push a buried install toward five thousand dollars.

Does a buried propane tank completely disappear?

No. A plastic dome stays above the surface so the delivery driver can reach the gauge, fill valve, and regulator. It's much smaller than an above-ground tank, but you'll still see a low lid in the grass.

Can I bury my existing above-ground propane tank?

No. A standard above-ground tank isn't built or coated for burial. Underground service requires a tank specifically manufactured, coated, and listed for it, so burying means buying a different tank.

Why is burying a propane tank harder in Florida?

Florida's high water table. Propane is lighter than water, so a buried tank in wet ground can float up out of the lawn unless it's anchored. That same moisture also corrodes the tank's sacrificial anode faster, so it needs periodic testing to keep the steel protected.

Does burying the tank change the setback rules?

No. In Florida a 125-to-500-gallon tank must sit at least 10 feet from the house, other buildings, and the property line whether it's above or below ground. Burying it doesn't let you place it closer.

What's the downside of burying the tank for maintenance?

You can't see it. Above ground, problems like rust or a bad regulator are visible. Buried, inspecting or servicing the tank — including checking that corrosion-protecting anode — can mean digging, so the thing you hid becomes a maintenance item out of sight.

Sources

HomeGuide — An underground and buried propane tank costs $1,100 and $5,200 with most homeowners spending $1,900 for a 500-gallon tank; above-ground 500-gallon averages about $1,500 installed.
LegalClarity — For above-ground tanks between 125 and 500 gallons, a minimum distance of 10 feet must be maintained from the main house, any other building, and the property line.
Propane Tank Traders — Because propane weighs less than water, underground tanks can float out of the ground if not properly secured and must be anchored in high water tables; a high water table accelerates corrosion and shortens anode life.
Superior Plus Propane — Once a propane tank is buried, only a small dome is visible – mere inches above the ground; the dome houses the regulator, gauge, and filling valve.
Liquid Propane — Buried tanks use a sacrificial anode that must be tested periodically because over time it is consumed; a standard tank cannot be buried — burial requires a tank manufactured, coated, and listed for underground service.

Stop reading ranges. Get your number.

GENERasic pulls the real property, flood, and elevation data for your exact address and returns one all-in installed price — sized to your home, your fuel, and your flood elevation. The vetted local installer confirms it on site.

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