An outdoor fireplace typically costs $3,000-$20,000 installed, with an average project near $11,000; elaborate custom masonry designs can exceed $30,000. An outdoor fireplace cost calculator should account for fireplace size, prefab or masonry construction, fuel connections, site access, and local labor rates.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Installed fireplace | $3,000 | $11,000 | $20,000 | Typical prefab through custom masonry |
| Prefab unit | $1,500 | $4,000 | $8,000 | Unit price before site work and installation |
| Custom masonry | $8,000 | $15,000 | $35,000+ | Varies with dimensions and finish |
| Gas line extension | $500 | $1,500 | $3,000 | Long or difficult runs cost more |
What an outdoor fireplace costs by fuel and build size
A straightforward installed project using a compact prefab wood-burning unit often lands at $3,000-$7,000. A midrange masonry fireplace with a finished surround commonly runs $8,000-$20,000. Large stone builds, custom hearths, or integrated seating and storage can reach $20,000-$50,000 or more.
These figures generally assume a level, accessible yard and standard finishes. Gas models may require a utility line or propane setup, while wood-burning designs need a suitable chimney and clearances. Assumptions: U.S. dollars, standard materials, normal access, and no major retaining-wall or utility work. For a typical permanent installation, budgeting about $8,000-$15,000 provides a practical starting range.
How masonry, firebox, and labor shape the installed quote
Contractor estimates combine the firebox or insert, foundation, masonry, chimney, installation labor, and any utility work. A basic prefab kit costs less upfront, but its base, facing, and installation still add to the total. Custom brick or stone requires more skilled labor and usually takes longer.
| Quote component | Typical price | What changes the charge |
|---|---|---|
| Firebox or prefab kit | $1,500-$8,000 | Size, fuel type, and brand |
| Foundation and hearth | $800-$3,000 | Excavation, slab size, and reinforcement |
| Masonry and facing | $2,000-$10,000 | Brick, manufactured stone, or natural stone |
| Installation labor | $1,500-$6,000 | Crew size, build complexity, and access |
| Chimney and cap | $800-$4,000 | Height, liner, and spark protection |
| Delivery and disposal | $200-$1,500 | Material weight and debris volume |
Masonry and general installation labor often works out to roughly $50-$100 per hour, though contractors usually quote the complete job rather than an hourly bill. Ask whether the written quote includes the foundation, chimney parts, delivery, cleanup, and finish materials.
Which dimensions and fuel specs move the estimate
Fireplace opening width affects the firebox, surround, and chimney dimensions. A compact 24- to 36-inch opening generally costs less than a 42- to 60-inch design, which may need a larger foundation and more masonry. A structure taller than about 8 feet can also raise costs through added materials and more difficult installation.
Fuel choice changes the site work. A natural-gas line extension under 20 feet may cost around $500-$1,500, while a 50-foot run or trenching through paving can push the charge toward $2,000-$3,000. Confirm the proposed opening width, total height, fuel source, and gas-line length before comparing bids.
How outdoor fireplace prices differ across U.S. regions
Labor and material availability can make quotes vary substantially by location. Large metro areas and high-cost coastal markets may run 15%-30% above a typical national estimate. Smaller Midwestern or Southern markets may come in 5%-15% below it when access is straightforward and stone or brick is locally available.
Remote properties can still cost more than nearby city jobs if crews must travel or deliver heavy materials over long distances. In colder regions, frost-depth requirements may also increase foundation work. Use regional percentages as a rough adjustment, then request local quotes for the same scope and finish.
When does a prefab fireplace cost less than custom masonry?
A prefab fireplace is often the lower-cost choice when a standard size and finish meet the project needs. Installed prices commonly fall around $3,000-$10,000, depending on the base, surround, and chimney. Custom masonry often starts near $8,000 and can rise past $25,000 for larger or detailed work.
Prefab does not always mean inexpensive: premium kits, stone veneers, and site-built foundations can narrow the difference. A custom build can make sense when the design must match existing masonry or fit a specific patio layout. Compare complete installed prices, not the kit price against a finished masonry quote.
What removal, gas lines, and permits add to a yard project
Removing an old fireplace or patio structure may add $500-$2,500, with disposal fees and difficult access affecting the bill. Trenching for a gas line can add $10-$25 per linear foot beyond basic connection work, particularly where paving must be cut and restored. Electrical work for ignition or lighting may add $300-$1,000.
Permit requirements vary by city and by fuel type. Allow roughly $100-$500 for common building or mechanical permits, but larger projects or inspections may cost more. Ask the local building department and utility provider which clearances, permits, and inspections apply before construction begins.
How to lower fireplace cost without cutting safety
Keeping the opening near 24-36 inches, choosing a standard prefab unit, and using a simple brick or manufactured-stone surround can avoid custom fabrication. Locating a gas fireplace close to an existing approved gas connection may also reduce trenching. Clearing the work area and arranging access for material delivery can limit crew delays.
Compare at least three itemized quotes with matching dimensions, fuel type, chimney height, and finish. Avoid trimming required clearances, fire-rated components, or permit work to save money. Control the design and utility scope first; retain the safety and code requirements in every bid.
Three outdoor fireplace estimates for common yard projects
A compact prefab wood-burning build might include a 30-inch opening, basic slab, standard chimney, and 20 labor hours. At $65 per labor hour, its estimated total could be about $5,000, including a $2,000 unit, $1,000 foundation, and modest delivery and finish costs.
A midrange custom masonry project with a 42-inch opening, stone facing, and 30-foot gas-line run might total around $14,000. A larger 54-inch stone fireplace with a taller chimney, upgraded hearth, and difficult access could reach $28,000 or more.
These examples are planning estimates, not contractor bids; taxes, permits, and regional rates can change totals. Use the dimensions and line-item assumptions to build a first estimate, then verify each cost with local installers.