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Granite countertops cost $50 to $150 per square foot installed in St. Louis in 2026, and most homeowners spend $70 to $115 per square foot for a standard kitchen. For a typical 30-square-foot kitchen, that works out to roughly $6,000–$10,000 fully installed. Your exact price comes down to the granite grade you choose, the slab thickness, the edge profile, and how many cutouts and seams your layout requires.
Below, we break down what actually drives that number, and how to budget for it, so you can walk into your project knowing what a fair St. Louis quote looks like.
Key Takeaways
- Granite countertops typically run $50–$150 per square foot installed in 2026, with most kitchens around $70–$115 per square foot.
- A standard 30 sq. ft. St. Louis kitchen usually totals $6,000–$10,000 fully installed.
- Your final price depends on the granite grade, slab thickness, edge profile, cutouts, and layout — not just the stone color.
- Every natural-stone project from Rockstar Granite includes a 15-year sealer warranty, with in-house fabrication and installation.
Granite countertop cost per square foot in 2026
Installed granite pricing is usually quoted per square foot, and that figure bundles the slab, fabrication, and installation together. In 2026, granite runs $80–$150 per square foot installed on average, dipping as low as $50 and climbing past $250 for rare, high-end slabs, according to HomeGuide’s 2026 granite cost data. The stone itself accounts for most of it, slab material typically lands at $40–$120 per square foot, with professional installation adding $30–$45 per square foot.
Here’s how the per-square-foot price tends to break down by granite grade:
These are national figures, and St. Louis and the Metro East generally track at or slightly below national averages. The only way to know your number is a quote built around your actual slab and layout. See our full range of granite countertop options.
What affects the cost of granite countertops?
Two kitchens of the same size can land hundreds, sometimes thousands, of dollars apart. Six factors explain most of that gap.
1. Granite grade and color
This is the single biggest lever. Widely available colors are quarried in volume and cost less, while rare slabs with bold movement command premium pricing. Grade reflects rarity and appearance, not necessarily durability, a budget granite can be every bit as tough as an exotic one.
2. Slab thickness
Granite usually comes in 2 cm or 3 cm thickness. Thicker 3 cm slabs cost more but offer a more substantial edge and often don’t need plywood support, which many homeowners prefer for a solid, high-end feel.
3. Edge profile
A standard eased or beveled edge is included in most base quotes. Upgraded profiles, ogee, bullnose, mitered, or waterfall edges, add labor and therefore cost. If you’re weighing options, our guide to countertop edge profiles walks through the look of each.
4. Cutouts, seams, and layout
Every sink, cooktop, and faucet hole adds fabrication time. Large or L-shaped kitchens may need multiple slabs and seams, while islands and waterfall ends increase both material and labor.
5. Backsplash and add-ons
A matching granite backsplash, extended bar overhang, or specialty sink all add to the total. These are great value-adds, just budget for them up front rather than as surprises.
6. Fabrication and installation
Skilled measuring, fabrication, and installation are where a quality result is made or lost. At Rockstar Granite, fabrication and installation are handled in-house by our own team, so the people who cut your stone are the people who stand behind it. See how our process works.
Granite vs. quartz: how the cost compares
Homeowners almost always price granite against quartz, and in 2026 they land close together. Quartz runs $50–$150 per square foot installed, averaging $75–$95, according to HomeGuide’s 2026 quartz cost data, roughly the same as mid-range granite. Granite is often cheaper at the entry level, while premium quartz can undercut exotic granite at the high end.
Cost usually isn’t the deciding factor between the two, maintenance and looks are. If you’re torn, read our full breakdown of how natural stones compare, or explore our quartz countertop selection.
What’s included in a Rockstar Granite quote
A countertop quote should be easy to read, with no surprises on install day. When you request an estimate from us, your price reflects:
- Your selected granite slab from our supplier network, with direct access to a wide range of colors.
- In-house fabrication and professional installation by our own crew.
- Your chosen edge profile and the cutouts your layout requires.
- A 15-year sealer warranty on natural-stone projects, protecting against stains and everyday wear.
Because we serve St. Louis, St. Charles, Columbia, and the Metro East communities of Madison, Edwardsville, and Alton, your estimate also reflects local installation, no long-distance travel padding the bill. See our full service area.
How to budget for granite countertops in St. Louis
A few practical moves keep your project on budget without cutting corners:
- Start with your square footage. Measure your counter runs, then multiply by a mid-range figure (around $70–$115/sq. ft. installed) for a realistic ballpark before you fall in love with a slab.
- Pick your stone before your edge. The slab drives most of the cost; lock that in first, then choose an edge that fits the remaining budget.
- Ask what’s included. Confirm cutouts, the backsplash, and the sealer warranty are in the written quote so the install-day number matches the estimate.
- See slabs in person. Granite varies piece to piece, viewing the actual slab prevents costly second-guessing later.
Frequently asked questions
How much do granite countertops cost for an average St. Louis kitchen?
A standard 30-square-foot kitchen typically runs $6,000–$10,000 fully installed in 2026, based on national cost data from HomeGuide. Smaller kitchens and bathrooms cost less; large or multi-slab layouts cost more. A measured quote is the only way to get your exact number.
Is granite cheaper than quartz?
At the entry level, granite is often slightly cheaper than quartz. In the mid-range the two are very close, both around $60–$95 per square foot installed, and at the high end, premium quartz can actually cost less than rare, exotic granite.
Does granite need to be sealed, and does that add cost?
Yes, granite is a natural stone and benefits from periodic sealing to resist stains. Rockstar Granite includes a 15-year sealer warranty on natural-stone projects, so that protection is built into your countertop rather than billed as an extra.
What makes one granite slab cost more than another?
Rarity and appearance. Common colors quarried in high volume cost less, while slabs with bold, unusual veining or rare colors command premium prices. Thickness, edge profile, and the number of cutouts also move the final figure.
Get a free granite countertop estimate
The fastest way to turn these ranges into a real number is a free, no-obligation estimate built around your kitchen. Rockstar Granite is a family-owned team with 15+ years of fabrication and installation experience serving St. Louis and the Metro East.
Reviewed by Michael Maggio, Rockstar Granite. Pricing figures reflect 2026 national cost data; local project quotes vary by slab, layout, and scope.
Sources
- HomeGuide, How Much Do Granite Countertops Cost? (2026), retrieved 2026-06-18 — https://homeguide.com/costs/granite-countertops-cost
- HomeGuide, How Much Do Quartz Countertops Cost? (2026), retrieved 2026-06-18 — https://homeguide.com/costs/quartz-countertops-cost
