Cast stone fireplace cost in 2026.

A cast stone fireplace surround from Oltre starts at $3,025 for the Trento — our smallest standard model — and climbs from there. Most residential projects land between $3,025 and $9,500 once size, finish, and any custom dimensions are factored in. Architectural projects with floor-to-ceiling overmantels or matching exterior elements run higher.

Those numbers cover the surround itself: cast, cured, hand-finished, and crated. Standard freight is free in the contiguous US. Installation is separate and depends on the firebox and the local trades.

What drives the price.

Five variables move a quote up or down. Linear feet of stone is the single largest. A compact 36-inch surround is meaningfully less stone than a wide opening with a deeper mantel shelf and full hearth.

Profile complexity is next. The Newport runs lower in its size band because the molding profile is restrained — fewer mold stages, less hand-finishing time. The Verona sits a step above for the same opening because the carved leg detail takes more time at the finishing bench.

Customization is the third lever. Adjusting width or height by an inch or two to fit a specific firebox is a modest line item — most surrounds get a small resize. A new profile or a ground-up custom design carries new mold work, which adds both cost and lead time.

Finish is the fourth. Standard limestone ships with the model. Custom color matching to an existing hearth, a paint chip, or a sample stone is no upcharge — order the sample set first to confirm the color in person, then we manufacture against the approved finish. What does add cost is full-mass pigmenting outside the standard palette.

Scale is the fifth. A standard surround at standard depth is one price band. A floor-to-ceiling overmantel, stacked corbels, or a matching return on a corner installation is a different scope.

Why six weeks.

Production runs four to five weeks: mold prep, cast, cure, finish, and crate. Freight transit adds five to seven business days in the contiguous US. The six-week window is the realistic timeline an architect can tell a client without padding. Three-week expedited production is available for 35% above list when a project move-in date demands it.

What a quote covers.

Architectural-grade GFRC at 11,000 PSI. Mold stage labor. Hand finishing. A custom-built crate sized to the order. Standard limestone finish or a custom match approved off a sample. FedEx Freight to a contiguous-US address on standard orders. Direct phone support for the installer.

What sits outside the surround price: residential liftgate delivery if the site needs it, in-person installation outside Oregon and Washington, and any new mold development for a fully custom profile.

Where Oltre lands in the market.

Below cast stone: MDF and polyurethane mantels run $500 to $2,500. They look acceptable from a distance, can’t be installed outdoors, and don’t carry weight. Above cast stone: hand-carved natural limestone from European quarries starts around $15,000 for a simple profile and regularly clears $30,000 once detailed carving is priced. Cast stone — well made, cast at 11,000 PSI, hand-finished — sits between, and reads on the room like the natural stone above it.