Adding a kitchen island with a quartz countertop costs between $1,500 and $6,000 for the countertop portion alone in 2026, depending on island size, quartz brand, edge profile, and whether a sink or cooktop cutout is involved. In the Columbia, SC area — which includes Manning and Clarendon County — quartz countertops typically run $50 to $100 per square foot installed, consistent with national pricing for mid-range selections.
At Granite Depot of Columbia, quartz kitchen countertops in Manning, SC start at $50 per square foot in 2026. Here’s the complete cost breakdown for island-specific projects — what drives the number up, what keeps it reasonable, and what most homeowners don’t account for until the invoice arrives.
What does a standard quartz island countertop cost by size?
Island size is the most straightforward cost variable — more square footage means more material, more fabrication time, and a higher total. Most residential kitchen islands run 15 to 40 square feet of countertop surface depending on layout and whether seating is included.
Here’s how the numbers break down in the Columbia, SC area in 2026 for mid-range quartz:
| Island Size | Square Footage | Estimated Total Cost |
|---|---|---|
| Small island (36″×48″) | 12–15 sq ft | $750–$1,500 |
| Standard island (48″×72″) | 20–25 sq ft | $1,200–$2,500 |
| Large island (48″×96″) | 30–35 sq ft | $1,800–$3,500 |
| Large island + seating overhang | 35–45 sq ft | $2,200–$4,500 |
These ranges reflect fully installed cost at mid-range quartz pricing including fabrication, standard edge profile, and basic installation. Premium quartz brands and specialty features push toward the higher end.
For quartz kitchen countertops in Manning, SC homeowners, a standard 20 to 25 square foot island in a mid-range Silestone or Caesarstone selection typically runs $1,500 to $2,500 fully installed at Granite Depot of Columbia — a figure consistent with what multiple Columbia-area sources report for comparable projects in 2026.
What quartz brand and tier choices affect island cost most?
Brand and product line selection is the biggest cost variable within the quartz category — and the difference between tiers is significant on an island where the material cost is concentrated on a single focused surface.
Entry-level quartz — basic solid colors and simple patterns — runs $50 to $70 per square foot installed in the Columbia, SC area in 2026. At Granite Depot of Columbia, this is where our quartz pricing begins. These surfaces perform identically to premium quartz in durability and maintenance but deliver less visual sophistication.
Mid-range quartz — veined patterns, marble-looks, popular colors from brands like Silestone, Caesarstone, and MSI Quartz — runs $65 to $95 per square foot installed. This tier represents the majority of island projects we complete and delivers the best combination of visual impact and accessible cost.
Premium quartz — flagship collections from Cambria, large-format veined patterns designed to rival natural marble — runs $90 to $130 per square foot installed. Cambria’s Brittanicca, Calacatta Nuvo, and similar selections are the most visually impressive quartz options available and are particularly compelling for island applications where the surface is a design focal point.
The island context is actually where premium quartz makes the most financial sense — upgrading from mid-range to premium on a 25 square foot island adds $500 to $800 to the total, which is a more manageable upgrade than applying that same premium across a full kitchen countertop run.
What additional costs affect a quartz island project specifically?
Several island-specific line items add to the base material and fabrication cost — and they’re worth knowing before requesting a quote.
Seating overhang support is required for any overhang beyond 10 inches on quartz. Concealed steel corbel brackets mounted inside the island cabinet — typically needed for bar or counter-height seating — add $100 to $300 to the project depending on island size and number of brackets required. This is a structural requirement, not an upgrade.
Sink cutout adds $150 to $250 if the island includes an undermount sink. Cooktop cutouts fall in a similar range. Islands with both a sink and a cooktop require two cutouts, adding $300 to $500 to the fabrication cost.
Edge profile upgrade on an island carries more impact than on a perimeter counter because all four sides of a freestanding island are visible. A decorative half-bullnose or waterfall mitered edge on an island adds $10 to $40 per linear foot — for an island with 20 linear feet of exposed edge, a profile upgrade adds $200 to $800 to the project.
Waterfall edge panels — the most dramatic island feature — add the most significant cost premium. Each vertical panel adds 12 to 16 square feet of additional material plus mitering and vein-matching labor. A single-sided waterfall on a mid-range quartz island typically adds $800 to $1,800 to the project. Two-sided waterfall adds proportionally more.
Island cabinet cost is separate from the countertop — if the island itself needs to be built or purchased, that’s an additional $500 to $3,000 or more depending on cabinet type, size, and configuration. The countertop sits on top of whatever island base exists.
Does quartz make sense for a kitchen island specifically?
Quartz is one of the strongest choices for island applications for a combination of reasons specific to how islands are used.
Islands see more varied contact than perimeter counters — more food prep, more casual dining, more direct surface contact from multiple users. Quartz’s non-porous surface means no sealing is required regardless of what’s placed on it, and cleanup is warm water and mild soap. For an island that doubles as a breakfast bar, homework station, and prep surface, the zero-maintenance profile is a genuine daily advantage.
The heat sensitivity caveat applies specifically to islands — if the island is adjacent to the cooktop or receives hot cookware regularly, a trivet habit needs to be established from day one. Quartz’s polymer resins can discolor from sustained direct heat contact in ways that granite doesn’t. For islands positioned away from the cooking zone, this consideration is largely irrelevant.
At Granite Depot of Columbia, quartz starts at $50 per square foot in 2026 and we carry selections from Cambria, Silestone, Caesarstone, and MSI Quartz. We also offer quartz packages that bundle fabrication, edge finishing, cutouts, and installation at a more favorable overall price point than line-item pricing. For anyone planning a project and researching quartz kitchen countertops in Manning, SC, our team walks through the full island cost breakdown before any commitment is made. Most projects are completed within two to three weeks from template to installed countertops. Reach us at (803) 956-4555 or visit us at 71 Berkshire Dr, Columbia, SC 29223.
Frequently Asked Questions
How much does a quartz kitchen island countertop cost in Manning, SC in 2026?
In the Columbia, SC area, quartz countertops typically run $50 to $100 per square foot installed in 2026. At Granite Depot of Columbia, quartz kitchen countertops in Manning, SC start at $50 per square foot. A standard island of 20 to 25 square feet typically runs $1,200 to $2,500 fully installed for mid-range quartz. Premium brands like Cambria push toward $2,500 to $4,000 for the same size island.
What is included in a quartz island countertop quote?
A complete quote should include the quartz slab, templating, fabrication, standard edge profile, and installation. Sink cutouts, seating overhang support brackets, specialty edge profile upgrades, and waterfall edge panels are typically priced as separate line items. At Granite Depot of Columbia, we also offer quartz packages that bundle the full scope at a more favorable overall price.
Does a quartz island countertop need to be sealed?
No — quartz is non-porous and never requires sealing at any point during its lifetime. This is one of its primary advantages over granite and marble for island applications where the surface sees heavy daily contact from multiple users.
How long does island countertop installation take at Granite Depot of Columbia?
Most island projects are completed within two to three weeks from first contact to installed countertops. Fabrication runs seven to ten business days after the template appointment. Installation day for a standard island countertop typically takes two to four hours.
Does Granite Depot of Columbia serve Manning, SC?
Yes. We operate from one location — 71 Berkshire Dr, Columbia, SC 29223 — and serve homeowners looking for quartz kitchen countertops in Manning, SC and throughout Clarendon County regularly. We have no separate office in Manning, but our team completes projects there consistently. Call us at (803) 956-4555 to schedule a visit or get a quote.