An outdoor fireplace turns a terrace into a room. It’s also the heaviest single thing in most gardens — a column of masonry that has to stand plumb through decades of freeze and thaw.
The published numbers.
LawnStarter’s 2026 guide says most homeowners pay about $3,000, with a full range of $1,200 to $21,000. Prefabricated kits run $1,200 to $8,335; custom masonry builds run $6,000 to $21,000 on average — “or more,” in the guide’s words.
What a custom fireplace is paying for.
- The footing. Poured below the frost line and sized for the weight. A fireplace set on a patio slab is the most common shortcut — and the most common failure.
- The firebox and the flue. Built to draw properly, with firebrick and refractory mortar where the heat is.
- The stone. Natural stone hand-set on the face and the chimney, with a stone mantel and hearth.
- The chimney cap. A thermal bluestone cap that sheds water and keeps it out of the core.
- Gas or wood. Gas lines and burners go to licensed trades; the masonry is built around them.
See our outdoor fireplaces and fire pits, or ask Edgar to walk your terrace.
We never quote from a chart. Edgar walks every site, measures, looks at what’s underneath and then writes a price — for the scope on the page, with the base and the drainage spelled out. Request a site walk.
