Fire Pit

Wood, propane, or natural gas burns inside a steel bowl, stone ring, or built-in surround, the hardware that turns a patio corner into a backyard fire pit. Gas versions push fuel through a burner hidden under lava rock, fire glass, or ceramic logs; wood versions need nothing more than the bowl itself and a match. Portable versions are steel bowls you carry out of the garage each spring and cost as little as $75 to $500, while built-in versions get set into a patio with stone, brick, or concrete and run from around $1,000 into the several thousands once excavation and gas plumbing are figured in. Either way, the job is the same: give a backyard somewhere to gather once the sun goes down, without everyone crowding onto a lit porch.

Getting the fuel and placement right matters more than the price tag does. A wood pit dropped too close to a fence or a covered patio can violate a local fire code and draw a citation, and a gas pit sized for a twelve-person patio can push more heat than a four-person seating cluster can sit near. Installed built-in features average $2,500 to $8,000 once a licensed contractor runs gas line at roughly $15 to $25 per linear foot, so the fuel decision gets made early and is expensive to reverse. A fire pit paired with an outdoor bar is one of the most common backyard man cave anchors, because the two together turn a patio into the default place people end up standing.

A fire pit is not a patio heater, even though both exist to keep people warm outside after dark. A patio heater is a shielded, mounted or freestanding burner that throws radiant heat outward without an open, visible flame, and it produces no crackle, no glow to sit around, and none of the smoke considerations a wood or gas flame carries. The two get specified for different reasons: a fire pit is the visual and social centerpiece of a seating area, a patio heater is a climate fix for a space people are already using for something else.

Fuel types, materials, and sizing a gas fire pit

Three fuels cover almost every residential fire pit. Wood burning is the cheapest to buy into and gives the crackle and smell people actually want, but it needs a woodpile, produces ash and smoke, and has to be fully extinguished before anyone leaves it. Propane pits run off a standard grill-style tank and dominate the portable market because they need no plumbing. Natural gas pits tie into the house gas line for functionally unlimited fuel and no ash cleanup, at the cost of a professional hookup.

Materials track price and maintenance. Carbon steel is affordable but rusts without upkeep; corten (weathering) steel is designed to rust into a stable protective patina over six to twelve months and needs no coating after that. Stainless steel resists corrosion longest because its chromium content forms a self-healing oxide layer, and it costs the most of the steel options. Cast iron holds heat well but needs repainting to keep surface rust from spreading. For masonry-style builds, a 36-inch pit runs roughly $200 to $1,000 in concrete, $300 to $2,200 in brick, and $350 to $3,000 in natural stone, driven mostly by labor.

BTU output is how gas pits get sized. Natural gas units typically run 30,000 to 60,000 BTU, portable propane units 14,000 to 40,000 BTU, and built-in propane pits 50,000 to 150,000 BTU, for context against a standard 40,000 BTU propane patio heater. Manufacturers generally put the comfortable range for a larger gathering pit at 90,000 to 125,000 BTU and a cozier four-to-six-person setup at 55,000 to 65,000 BTU. Gas units sold in the US are certified to ANSI Z21.97 / CSA 2.41, the standard covering outdoor decorative gas appliances, and a UL or CSA mark on the spec sheet means the unit has been tested against it.

Wood-burning vs. gas fire pits

Wood wins on atmosphere and upfront cost. A steel wood-burning bowl needs no installer, no gas line, and no annual service, and it produces the crackle, sparks, and wood smell that a gas flame cannot fake. What it costs in return is labor and restriction: stocking and drying fuel, cleaning ash after every use, and living with local burn rules. The Bay Area's Spare the Air program, for example, bans wood-burning fire pits outright whenever forecast fine-particle pollution crosses 25 micrograms per cubic meter, with a first violation drawing a $100 ticket, and similar seasonal or air-quality-triggered bans exist in other regions.

Gas wins on control. A propane or natural gas pit lights and shuts off on a switch, holds a steady flame with no tending, and produces no smoke to blow into a neighbor's yard, which is why most burn bans exempt it. The tradeoff is installation: a built-in natural gas line needs a permit and a licensed gas contractor, at roughly $45 to $200 an hour on top of the per-foot line cost, and even a self-contained propane unit is a bigger purchase than a bare steel bowl. Neither fuel is objectively better; the right one depends on whether the space is a covered patio with limited ventilation, a wide-open yard, or a jurisdiction with an active burn restriction.

Where the backyard fire pit came from

Fire in a dug or lined pit is one of the oldest human technologies on record. Excavations at Qesem Cave in Israel put organized hearth use at more than 300,000 years old, and evidence from sites in Spain suggests ground-pit cooking fires dating back roughly 250,000 years. For most of that history, a fire pit was a hearth: a survival and cooking necessity, not a lifestyle purchase.

The backyard fire pit as a manufactured retail product is much newer. The outdoor living and patio industry, tracked by the Hearth, Patio & Barbecue Association, a trade group founded in 1980, saw outdoor heating product sales climb more than 40 percent between 2004 and 2005 alone, with an estimated 600,000 to 700,000 fire pit units shipped across North America that year. That mid-2000s stretch is generally treated as when the category moved from a rare custom masonry feature to a mainstream item sold at home centers alongside grills and patio furniture.

Common mistakes

Ignoring clearance to overhead combustibles, not just walls. People measure the gap to the house and stop there, missing that a pergola roof, a gazebo eave, or a low tree canopy counts as a combustible structure for setback purposes too. NFPA 1, section 307.4.2, sets recreational fires at least 25 feet from a structure or combustible material, with an approved manufactured container allowed as close as 15 feet; several cities, including Madison, Wisconsin, and Champlin, Minnesota, codify a flat 15-foot rule from any building or property line. Check overhead as well as sideways before placing the pit.

Assuming no permit is needed. Portable propane and wood bowls usually skip the permit process, but a built-in natural gas feature almost always needs both a building permit and a licensed gas contractor for the line. Wood pits can also trigger air-quality restrictions on short notice, since programs like Spare the Air issue bans on a day-by-day forecast rather than a fixed calendar.

Picking the wrong fuel for the space. A wood pit tucked under a covered patio has nowhere for smoke to go and will drive everyone back indoors. An oversized gas pit, pushing toward the 90,000-to-125,000 BTU range meant for a large open gathering, will run guests out of a tight four-seat cluster long before the tank does. Match BTU and fuel to the actual footprint, not the biggest unit on the showroom floor.