Fireplace Installation Cost Calculator
Punch in the four numbers off your quote — the fireplace unit, its venting or chimney, any add-ons, and labor — and see the loaded total. The type you pick is the biggest lever on the price, so change it there, not in this arithmetic.
1 Enter your numbers
The type is the biggest lever — a factory-built (zero-clearance) fireplace plus its chimney and labor is the common new install, about $4,180 here. A full masonry fireplace and chimney costs far more (see the new-chimney tool).
Two houses can "install a fireplace" for numbers that are three times apart, and it is almost never the labor rate that splits them — it is what got installed. A factory-built (zero-clearance) fireplace is an insulated metal box you frame a wall around and vent with lightweight chimney pipe; it drops in fast. A full site-built masonry fireplace and chimney is footings, block, firebrick, a flue and a mason’s crew for days — a different order of magnitude (price that one with the new-chimney tool, not this one).
This estimator keeps the four cost buckets separate on purpose so you can see where the money goes and swap a single line when the quote changes. The unit and its venting are catalog items your installer marks up; the add-ons — stone facing, a mantel, a raised hearth, a blower kit — are where an "installed fireplace" quietly becomes a "remodeled wall". Enter each straight off the itemized bid.
Formula
total = (unit + venting + add_ons + labor) × (1 + contingency)
Every dollar is yours from the quote. The contingency is a buffer for the surprise the installer finds behind the drywall — a header to move, a gas stub to cap, a non-standard rough opening. Ten percent is a sane default on a clean new-construction wall; push it to 15–20% on a retrofit into an existing wall where nobody knows what is back there yet.
Worked example
New great-room wall, framed and open. Zero-clearance wood-burning unit at $2,150, chimney pipe and a chase-top cap at $840, a stacked-stone face and a reclaimed mantel adding $560, and labor to frame, set and finish at $1,375. With a 10% buffer:
(2,150 + 840 + 560 + 1,375) × 1.10 = 4,925 × 1.10 = $5,418
Drop the stone facing and the mantel and the same fireplace lands near $4,800 — proof that the "extras" line is doing the heavy lifting, not the box.
Measure the scope before you trust the number
Nail down these before comparing bids:
- Type first. Factory-built vs full masonry is a fork, not a slider. If a bid looks impossibly cheap, it is a zero-clearance unit; if it looks huge, it is masonry with a footing.
- Vent path. A straight shot up through the roof is cheap pipe; every offset, a tall run, or a through-wall termination adds fittings and labor to the venting line.
- Facing is a remodel. Stone, tile, a floating mantel and a raised hearth are trades of their own. Keep them in add-ons so you are comparing the fireplace, not the wall.
- Gas vs wood shell. If it is a gas unit, the gas line and its venting belong in the gas-fireplace tool, which breaks those out.
Clearances, hearth extension depth and listing details are set by the appliance’s instructions and local code — see the Hearth, Patio & Barbecue Association and NFPA for the standards your installer works to.
Reference table
Labeled planning band — a sanity check on your total, NOT a quote. Confirm with a licensed, insured installer.
| Job | Typical band |
|---|---|
| Fireplace installation | $1,500 – $8,000 |
| Chimney cap install | $150 – $600 |
Frequently asked questions
What drives fireplace installation cost the most?
The type. A factory-built zero-clearance unit plus lightweight chimney pipe and labor is the common, moderate install; a site-built masonry fireplace and chimney costs several times more because it needs a footing, block, firebrick and days of a mason’s time. Pick the type first, then everything else is trim.
Is the stone facing part of the fireplace install?
Usually not in the base fireplace bid — stone or tile facing, a mantel and a raised hearth are separate finish trades. That is why they live in the add-ons line here: so you can compare two fireplace quotes without a $2,000 stone wall hiding the difference.
Does this include the chimney?
The venting line covers factory-built chimney pipe and its termination. A brand-new masonry chimney is a construction job on its own — estimate that with the new-chimney construction tool, which prices it roughly by height.
Why add a contingency to a fixed quote?
Because "fixed" quotes meet reality behind the drywall — a header in the way, an out-of-square rough opening, a code-required clearance shield. On a clean new wall 10% is plenty; on a retrofit push it to 15–20% and be pleasantly surprised.