Last Updated on October 20, 2026 by Umar Farooq
The cost of flagstone pavers is about $15 to $27 per square foot for an installed patio, according to Lawn Love's flagstone patio cost guide. That's roughly $2,200 to $3,900 for a 12 x 12 ft patio. The stone alone runs about $250 to $750 per ton, or $6 to $25 per square foot, depending on the rock and how far it travels. Installed concrete pavers come in lower, at about $8 to $24 per square foot. So flagstone usually costs more. It gets close to paver prices when the stone is quarried nearby and laid dry on gravel with open joints, rather than mortared onto a concrete slab. Worth a read next: pavers vs flagstone patio.
I lined up three cost guides and a contractor's quote, and they disagree the way cost guides always do. Treat each figure as a sourced range, not a quote.
Cost of flagstone pavers by the ton and by the square foot
Stone yards sell flagstone by weight, so the ton is the number you'll see on the price board. HomeGuide's flagstone price guide gives these material-only ranges:
| Flagstone type | Price per ton | Price per sq ft |
|---|---|---|
| Limestone | $250–$400 | $7–$15 |
| Sandstone | $250–$750 | $9–$13 |
| Bluestone | $300–$500 | $6–$14 |
| Quartzite | $300–$600 | $7–$25 |
| Slate | $475–$700 | $9–$25 |
| Granite | $600–$750 | $10–$15 |
HomeGuide also puts a 2-ton pallet at 200 to 500 square feet, which works out to about 100 to 250 square feet per ton. The spread comes from thickness. Thin stone covers more ground per ton, and thick stone covers less. When comparing yards, divide the price per ton by the coverage they quote for that exact stone; a cheap ton of thick stone can cost more per square foot than a pricier ton of thin.
Distance matters as much as the rock. Landscaping Network's flagstone cost overview uses bluestone quarried in Connecticut and shipped to California as its example of freight inflating the price. The same article lists local stone at $2.20 to $3.20 per square foot in four US towns. (Flagstone is the only patio material where the cheapest option is often whatever the ground nearby happens to be made of.)
Dry-laid or mortared: the biggest price switch
How the stone is set moves the installed price more than which stone you pick. In Landscaping Network's article, a Colorado Springs contractor says flagstone with open joints filled with gravel or planted groundcover can run as low as $10 per square foot on new construction, while mortared joints run $20 to $30.
The reason is simple. A mortared patio needs a concrete slab underneath. If you don't already have one, you're paying for a concrete patio first and a stone patio on top. Dry-laid flagstone sits on the same compacted gravel and sand as a paver patio, so its extra cost is mostly the labor of fitting irregular pieces.
Lawn Love's per-method project totals overlap heavily, because patio size swings them more than method does. Our flagstones guide covers which method suits thick versus thin stone.
Flagstone vs pavers cost, square foot for square foot
For material alone, HomeGuide puts manufactured pavers at $2 to $4 per square foot against $6 to $25 for flagstone. Installed, Lawn Love lists paver patios at $8 to $24 against $15 to $27 for flagstone, and Homewyse's basic flagstone paver estimate starts higher still, at about $27 to $35. Our patio pavers price guide breaks down where paver money goes.
Two things push flagstone up that the per-ton price hides:
- Fitting time. Landscaping Network notes that irregular stone costs more to install than factory-cut stone, because each piece has to be chipped and fitted. Cut rectangles lay almost like pavers.
- Overage. The same article says experienced contractors order at least 25% more stone than the area, because pieces vary in color and shape and the last few gaps need choices. Pavers usually need about 10% extra.
My take: flagstone is only as expensive as its freight and its mortar. Buy stone from the nearest quarry, lay it dry on a compacted base, and the gap to pavers shrinks to the fitting labor. Buy imported stone and mortar it onto a new slab, and you've built the priciest patio in this article.
Worked example: a 12 x 12 ft dry-laid patio
For 144 square feet with 25% overage, order about 180 square feet of stone. At 100 to 250 square feet per ton, that's roughly 0.7 to 1.8 tons. At $250 to $750 a ton, the stone costs somewhere between about $180 and $1,350. The low end is thin local sandstone and the high end is thick imported slate or granite. HomeGuide adds $5 to $10 per ton for delivery within about 25 miles.
Lawn Love's DIY table for the same size lands at about $2,171 to $2,421, pricing the stone at $10 a square foot and buying every tool. Its own conclusion: a DIYer who buys everything spends about what a contractor charges. So don't buy everything. Rent the plate compactor (Lawn Love lists $83 a day), borrow the wheelbarrow, and the DIY number falls fast. Where you're likely to overspend is buying one pallet too few and paying delivery twice, or buying thin stone for a dry-laid patio, where it rocks and cracks.
Keep flagstone near paver prices: local stone, laid dry
The cost of flagstone pavers swings from close to a concrete paver patio to double it, and three choices decide which. Local stone costs less than stone that crossed the country. Dry-laid on gravel costs less than mortared on a slab. Cut pieces install faster than irregular ones. Make all three the cheap way and flagstone stops being the luxury option. For a path rather than a patio, spaced stepping stones for a walkway stretch the same tonnage much further. It's still rock by the ton, but every ton you don't order is a ton you don't lift.
FAQ
Is flagstone more expensive than pavers?
Usually. Lawn Love puts installed flagstone at $15 to $27 per square foot against $8 to $24 for pavers, and HomeGuide puts the materials at $6 to $25 for flagstone against $2 to $4 for pavers. Local stone laid dry with gravel joints can come close to paver prices.
How much does a ton of flagstone cost?
About $250 to $750 per ton, per HomeGuide. Limestone and sandstone sit at the low end, and slate and granite at the high end.
How many square feet does a ton of flagstone cover?
About 100 to 250 square feet, based on HomeGuide's figure of 200 to 500 square feet per 2-ton pallet. Thinner stone covers more.
Is mortared flagstone more expensive than dry-laid?
Yes. It needs a concrete slab underneath. A contractor quoted by Landscaping Network puts gravel-jointed flagstone as low as $10 per square foot and mortared flagstone at $20 to $30 on new construction.
Why does flagstone cost so much to install?
Irregular pieces are chipped and fitted one by one, contractors order about 25% extra, and heavy stone is priced partly on freight.
