A 500-gallon LP tank typically costs $2,000-$4,500 installed above ground or $4,000-$8,000 installed underground, with the tank alone often priced at $1,500-$3,500. The final quote depends mainly on tank placement, excavation, distance from the building, local code requirements, and whether the tank is purchased or leased.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Aboveground tank and installation | $2,000 | $3,250 | $4,500 | Tank, basic pad, standard connection |
| Underground tank and installation | $4,000 | $6,000 | $8,000 | Includes typical excavation and backfill |
| Tank purchase only | $1,500 | $2,500 | $3,500 | Price varies by coating, brand, and dealer |
| Annual lease | $50 | $125 | $250 | Some suppliers waive rent with fuel purchases |
| Propane fill | $2.00 | $2.75 | $4.00 | Per gallon; local delivery minimums may apply |
Assumptions: Residential 500-gallon water-capacity tank, standard access, ordinary soil, and a typical U.S. labor market. A 500-gallon tank is generally filled to about 80%, or approximately 400 gallons.
What a 500-gallon LP tank costs installed
For a common residential setup, buyers pay about $2,000-$4,500 for an aboveground 500-gallon tank and basic installation. The national midpoint is roughly $3,250, assuming a level location, a short gas line, and no major site work. This estimate may include delivery, setting the tank, regulator, connection, leak testing, and a basic pad.
An underground installation usually totals $4,000-$8,000 because it adds excavation, corrosion protection, specialized tank fittings, and backfill. Difficult soil, rock, a long line, or restoration of landscaping can push the total above that range. Placement is often the biggest difference between an economical aboveground installation and a substantially more expensive buried system.
A 500-gallon tank refers to its water capacity, not the amount of propane normally loaded. The 80% fill limit leaves room for expansion, so a nearly empty tank generally takes about 400 gallons. At $2.00-$4.00 per gallon, a full delivery from empty would cost approximately $800-$1,600 before fees or taxes.
How tank, trenching, and hookup charges shape the quote
Quotes are easier to compare when the tank, delivery, labor, and site work are listed separately. The table gives common residential ranges; not every installer includes every line item in the base price.
| Quote item | Typical price | What changes the charge |
|---|---|---|
| 500-gallon tank | $1,500-$3,500 | Aboveground or underground model, coating, new or used condition |
| Delivery and placement | $150-$500 | Travel distance, truck access, lifting requirements |
| Installation labor | $500-$1,500 | Crew time, connections, testing, and line length |
| Pad or anchoring | $100-$500 | Gravel or concrete base, tie-down needs, ground conditions |
| Excavation and backfill | $800-$2,500 | Required for burial; rock and landscaping add cost |
| Gas line and regulator | $250-$1,500 | Distance, pipe size, appliances, and pressure requirements |
Labor may be quoted as a package rather than by the hour. Where billed separately, propane or plumbing technicians commonly charge about $75-$150 per hour, often with a minimum service charge. A representative labor calculation is For example, 6-10 hours at $75-$150 per hour works out to $450-$1,500, before equipment or materials.
Ask whether the estimate includes the regulator, gas line, pressure test, permits, delivery, and final inspection. A low tank-only price is not comparable to a turnkey installation quote.
Which tank size, line distance, and soil conditions raise prices?
Capacity affects the tank price, but the right size depends on appliance demand, climate, and refill frequency. A 500-gallon tank commonly suits a home using propane for multiple purposes, such as heating, cooking, water heating, or a generator. A dealer or licensed installer can check appliance input ratings and anticipated peak demand before sizing the system.
Gas-line length is a measurable cost driver. A run of 25-50 feet may fit a basic hookup estimate, while a run beyond 100 feet can add several hundred dollars or more for larger pipe, trenching, fittings, and labor. Pipe sizing depends on total appliance load and pressure, so a longer route may require a larger diameter rather than a simple per-foot extension.
Burial depth and soil conditions matter for underground models. Standard digging in open, workable soil is less expensive than excavation through rock, roots, a paved driveway, or a steep slope. Difficult access may require a smaller excavator or additional crew time, adding roughly $500-$2,000 or more. Local separation distances from buildings, property lines, and ignition sources can also limit where the tank can go.
Tank condition and corrosion protection affect upfront cost and expected service life. A new tank with a durable coating may cost more than a used tank, but a used unit should have its condition, pressure rating, and eligibility for local installation checked. Before accepting a price for a larger tank or buried placement, confirm that the site and propane load actually require that choice.
Aboveground versus underground 500-gallon tank prices
An aboveground tank is usually the lower-cost option, commonly $2,000-$4,500 installed. It needs a stable base and required clearance but avoids the excavation and corrosion-protection costs of burial. Delivery access matters: the truck needs a safe route and enough room to position the vessel.
Underground models typically cost $4,000-$8,000 installed. The tank itself and installation hardware can cost more, and excavation, anode or other corrosion-protection equipment, and careful backfilling add work. A buried tank can keep the vessel less visible, but it may complicate inspections, maintenance, or eventual replacement. Landscaping and pavement restoration are not always included in the quoted price.
Leasing changes the upfront comparison. A supplier may place a tank for $0-$500 upfront and charge $50-$250 per year, or waive rent if the customer buys a minimum amount of propane. The tradeoff is usually supplier control over refills, service, or tank removal. Over five years, a $125 annual lease is $625 before propane charges, while ownership requires the initial purchase and responsibility for upkeep.
Compare total five-year spending, not just the installation deposit. Request the lease term, fuel-purchase conditions, service fees, removal charges, and ownership-transfer rules in writing.
How long tank installation takes and what labor covers
A straightforward aboveground installation may take 4-8 hours once the site is ready. Underground work often takes 1-2 days, depending on excavation, inspection timing, line routing, and restoration. A typical crew may include one or two qualified installers, with excavation equipment brought in for buried tanks.
Preparation reduces paid labor time. Clearing brush, identifying underground utilities, confirming truck access, and choosing a location that meets required clearances can prevent delays. Property owners should not excavate or connect propane lines themselves unless local rules and licensing requirements explicitly allow it. The installer is responsible for code-compliant connections and pressure testing.
Some companies charge a $75-$200 trip or diagnostic fee for a site visit, which may be credited toward installation. Rush service, remote locations, or a second trip after a failed inspection can add $100-$500 or more. Ask whether the site assessment, utility marking coordination, and inspection visit are included.
Regional price differences for 500-gallon propane tanks
Labor and delivery prices commonly run 10%-25% above national averages in expensive metropolitan areas, remote mountain communities, and regions with limited propane contractors. Rural locations may have lower hourly rates but higher delivery or travel charges. Local demand for heating fuel can also affect installer availability and scheduling.
Climate influences the system a home may need, but it does not create one fixed regional tank price. Colder areas may require greater appliance capacity or more frequent deliveries, while local frost depth, soil, and code rules can affect buried installation requirements. In an area with rocky ground, underground work may exceed the national range even when labor rates are moderate.
Taxes and permitting also differ by location. A residential permit or inspection might cost $50-$300, while additional site plans or multiple inspections can raise the amount. Get at least two itemized local quotes based on the same tank location, line length, and installation scope. This is more reliable than applying a national average to a particular property.
Permits, inspections, and delivery fees to check
Many jurisdictions require permits or inspections for a new propane tank, gas line, or appliance connection. Typical permit fees range from $50-$300, but combined building, fire, or plumbing requirements may cost more. The installer should identify applicable rules, setbacks, access requirements, and inspection steps before work begins.
Delivery charges for a tank or propane may be separate from the installation price. Tank transport and placement may cost $150-$500, while a fuel delivery can have a minimum order, service fee, or distance surcharge. A delivery of 100 gallons at $2.75 per gallon is $275 for fuel alone; a $50 delivery fee would bring that visit to $325 before any applicable tax.
Underground work may need utility locating before digging and an inspection before backfill. Ask who schedules those steps and whether the estimate covers waiting time or a return visit. If an inspection identifies a code issue, corrections such as relocating a tank or changing a gas line can add hundreds of dollars.
Ways to reduce the 500-gallon tank installation bill
Choosing an accessible aboveground location is often the most effective way to avoid excavation expense, provided the placement meets safety rules and works for the property. Keep the route between the tank and appliances as direct as practical; an unnecessarily long line can increase pipe, trenching, and labor costs. Do not compromise required clearances to save money.
Compare ownership and leasing using the same fuel price, service terms, and expected holding period. A leased tank can reduce startup spending, but a minimum-purchase contract or restricted supplier choice may change long-run costs. For an owned tank, ask about delivery, regulator, inspection, and warranty coverage in the written quote.
Schedule before peak heating-season demand when practical. During high-demand periods, contractors may have longer lead times or limited availability; off-peak scheduling can make it easier to compare bids, though a discount is not guaranteed. Prepare the site and arrange utility marking before the crew arrives to reduce return trips.
Request three itemized estimates with identical specifications: tank type, tank condition, line length, pad, permit, excavation, testing, and cleanup. Avoid paying for upgrades without a clear need, but do not select a used vessel or undersized line solely because it lowers the first quote. The best cost control is a complete, comparable scope that includes every required connection and inspection.