The Heart of the Kitchen

Kitchen Island
Countertops

The island is where every eye goes first, and where everyone ends up. Fabricated and installed by Granite Guy based in Southborough. Serving MetroWest and Greater Boston since 1995.

Kitchen Islands Countertop - Granite Guy

"There's so much to decide."

✓ Choosing the right island is no small thing.

Size, seating, one color or two, a built-up edge, a waterfall. Most of it gets decided early, with your designer, your cabinet dealer, your builder, long before there’s a slab on the saw.

We’re glad to weigh in on the stone side any time.

Compare the materials

"Who can I trust to build it?"

✓ Whatever you decide, we’ve built it before.

We’re your local fabricator. You pick the slab, we fabricate and install it. An island is sometimes the most challenging counter in the whole kitchen, and we’ve been building them since 1995.

Come talk to the team who’ll actually do the work.

Come see your slab in person

"Should I do more to the island? "

✓ It’s already the centerpiece. The extras are optional.

Not every island is huge, but the size alone is often statement enough. Pick the right slab and a simple edge, and it will hold the room on its own. A waterfall or a built-up edge takes it further, and both cost more. Get a quote, decide later.

Don’t shop by material name. Shop by color and by look.

How pricing works

Visit & Select

Come to the Southborough showroom, see the material in person, and choose the slab for your island.

We Handle Everything

Digital templating, fabrication, and install, all in-house. You get a digital layout of your whole kitchen on the actual slabs, so you see how the veining runs across the island and where any seam would land. Nothing moves to fabrication until you approve it.

Enjoy Your New Kitchen

Once you’ve approved everything, fabrication moves forward and installation typically follows within 5 to 10 business days, depending on size and complexity.

Quartzite

Bold, wild patterns. Looks like marble, wears like granite. Cristallo is translucent, and we’ve built islands with the stone lit from behind.

Best for: an island that gets noticed, and still takes a beating.

Explore quartzite

Granite

The original natural stone countertop. Heat resistant, scratch resistant, and available in more patterns than you can look at in one visit.

Best for: a kitchen that gets used hard and still has to look right in twenty years.

Explore granite

Quartz

Engineered stone with consistent color and pattern. Non-porous, so it never needs sealing. It’s also the strongest of the group over an overhang, which matters if you want stools at the island.

Best for: a long seating overhang, and a household that doesn’t want to think about maintenance.

Explore quartz

Marble

Nothing else looks like it, and it stays cool, which is why bakers work dough on it. It will patina over time, and most marble owners come to love that.

Best for: someone who wants a material with a history, and doesn’t mind it having one.

Explore marble

Soapstone

Naturally non-porous, so it never needs sealing, and the most heat resistant material there is. It darkens with time, and mineral oil only speeds up what it would do anyway.

Best for: a farmhouse kitchen, and anyone who likes a surface that changes with them.

Explore soapstone

Porcelain

A printed surface, close enough that it’s hard to tell from real marble, at a fraction of what a rare Italian slab costs. The pattern doesn’t run through the body, so a hard corner knock can chip through.

Best for: the Italian marble look, without living like you own Italian marble.

Explore porcelain

One Team, One Facility, Start to Finish

Showroom, slab warehouse, and fabrication shop, all in one building and run by one team.

A Shop Built for Precision

CNC, waterjet, and digital templating, the right tool for every cut, including the long straight runs and tight miters an island lives or dies on.

Hand-Pick the Exact Slab You'll Get

Walk our indoor warehouse and choose the actual slab for your island, in steady light any month of the year.

"They deserve every bit of these 5 stars! ... they placed our monster sized island with a delicate touch. ... they were by far the best priced and did the total package. They fabricate so it was one less step for us."

— Robert Klocek

Google Review

"The craftsmanship is outstanding, the pricing is competitive and reasonable, and the customer service is second to none. ... The Granite Guy completely understood my perspective and always worked with me, never against me."

— Debanshu Satpathy

Google Review

"Very pleased with my new Quartz kitchen countertops and island. Geovanna was very helpful during the process of picking the right product for my kitchen upgrade."

— Susan Tarini

Google Review

Just refreshing the kitchen?

Come in anytime. Bring a cabinet door, a paint chip, or a floor photo so we can match the slab’s tone and movement to what’s staying.

In the middle of a remodel?

Reserve your slab now. The piece you love may be gone by the time your project needs it. We template once cabinets are in and level, so lock it in early.

Big custom build on a long timeline?

Designers and builders pick the slab early, because the right one is hard to find on demand. Your project might run months or into next year, and we’ll hold your material safely until your site is ready.

Rough dimensions & photos

A simple sketch, rough measurements, or a few phone photos of the kitchen. Nothing formal, just enough to picture it.

Whatever you're matching to

Cabinet door, flooring sample, paint chip, backsplash tile, even a photo of your appliances. These are what we'll hold the slab against.

How you'll use it

Stools and homework? Prep and heavy cooking? Somewhere to put the food out when you're hosting? This changes which material we'd point you to.

✓ Kitchen Countertops

✓ Kitchen Islands

✓ Full-Height Backsplashes

✓ Waterfall Countertops

✓ Pantry Countertops

✓ Bathroom Vanities

✓ Slab Shower Walls

✓ Shower Accessories

✓ Tub Surrounds

✓ Laundry Room Surfaces

✓ Fireplace Surround

✓ Custom Slab Hearths

✓ Bar Countertops

✓ Custom Tabletops

✓ Slab Remnants

✓ Commercial Countertops

✓ Outdoor Kitchen Countertops

✓ Countertop Removal

But there's no price list in this business. Two suppliers can charge different prices for the same slab, and the work you want done changes the rest of it.

An island is priced the same way as the rest of your counters, by the square foot. About 95% of materials fit between $55–150 per square foot installed. Exceptions like Blue Bahia granite, Blue Macaubas and Cristallo quartzites, the Calacatta and Statuario Italian marble families, and Onyx are always more expensive.

But it's not just about material. Here's what else affects your price:

Sourcing: From our in-stock inventory, you pay a set price per square foot for just the footage you use. If we don't have your slab, we bring it in, and since slabs only come whole, that route is priced by the slab. We also keep remnants for smaller projects.
Project size: Bigger projects cost more than smaller ones, but often get better per-square-foot pricing.
Complexity: A waterfall means a mitered corner and more fabrication. A long overhang may need support underneath. An integrated sink adds work. Each one adds cost.
Waste: Slabs come in set sizes, so the shape of your island, and matching the veining from piece to piece, decides how much usable countertop comes out of one. We lay out every cut digitally to get the most from each slab, but the pattern still sets the limit. Worth it, and worth knowing up front.

Supply and Demand: Desirability drives price. What's trendy costs more, what's out of fashion costs less. Rare blues are expensive because they're naturally rare. Italian marbles are expensive because of high demand and limited supply.

Comparing Quotes?

The service, templating, fabrication, edges, and install, runs about $30 to $50 a square foot, and it's consistent across the industry. The big difference between quotes is the material.

Watch for unclear quotes where any change becomes an extra, and "free edge" promos where the cost is just built in elsewhere. A cheaper quote usually means a different material or brand, not a better deal. It helps to like more than one color, so you have some flexibility.

Our quotes spell it out line by line: templating, fabrication, edges, cutouts, seaming, and install, plus whatever the job adds. You see exactly what you're paying for.

Read our full pricing breakdown →

So How Do You Budget?

The island is the centerpiece, so it's the natural place to make it pop. Upgrade the edge, or go a different color if your design calls for it. Whatever customization you want, we can do it.

Don't shop by material name. Shop by color and look. Come to our warehouse in Southborough, see, touch, and feel your options, and choose what fits your budget.

About Granite Guy

Your Kitchen Island Fabricator in Southborough, MA

Granite Guy is a full-service fabrication shop in Southborough: showroom, indoor slab warehouse, and fabrication floor, all in one building. Countertop store.

From the slab you pick to the final install, one team handles it in-house.

I'd rather walk you through a decision than push you to one. The more you understand before we start the job, the fewer surprises later. That's how I work, and it's how I train my crew.

✓ Walk-In Showroom

✓ On-Site Slab Warehouse

✓ In-House CNC Fabrication

✓ A Wide Range of Island Materials

✓ Family Owned and Operated Since 1995

✓ Local and MetroWest Based

Maintenance

Living With Your New Kitchen Island

The island usually takes the most abuse in the kitchen. Homework, hot pans, meals. Day to day the routine is the same for every material: mild soap and warm water, cutting boards, coasters under anything acidic. Skip abrasive cleaners, bleach, vinegar, and citrus.

Sealing is where they differ. Quartz and porcelain never need it. Granite, quartzite, and marble do, but not on a calendar. Splash a little water on the surface and watch: if it beads, you're fine. When it soaks in and darkens the stone, it's time. Some dense granites go years. Every natural stone we install comes sealed to start you off.

Soapstone is its own thing. It never needs sealing at all. Mineral oil just speeds up the darkening it would do on its own.

Care guides: how to clean granite, marble, and quartzite.

How do I know my kitchen island will match what I picked?

Every job gets a digital layout before we fabricate, no matter the material. You see a digital image of your actual slab, laid out piece by piece with any seams marked, and if there's veining, we adjust until the pattern flows. Nothing moves to fabrication until you approve it.

How big can an island be without a seam?

It depends on the slab. Sizes vary by material and by manufacturer, and nothing in this industry is standard, but a typical slab runs somewhere around 10 to 11 feet long. If your island is longer than that, it needs a seam.

How much overhang can I have without supports?

As a general rule, most natural stone is held to around 10 to 12 inches unsupported, which is usually enough legroom for a stool anyway. Quartz is stronger and can typically go further. It depends on the material, the slab, and how the island is built, so it’s worth talking through before anything is cut.

Can I put a sink and cooktop in my island?

Yes. We cut the openings for undermount sinks, cooktops, and pop-up outlets.

What areas do you serve?

We focus on MetroWest and Greater Boston, but we go all over Massachusetts. For the right project, we're willing to travel just about anywhere in New England.

Can I visit your showroom to see island slabs?

Yes. Our Southborough showroom and warehouse are open for you to walk through and hand-pick your slab. We encourage it.

How long does an island countertop project take?

We template once cabinets are in and level. From template to install runs 5 to 10 business days, depending on material and complexity. A waterfall edge or a complex layout can run a little longer.

What's the best material for a kitchen island?

There isn't one. Quartzite gets picked a lot because it looks like marble and takes a beating. Quartz if you want stools and no maintenance. Granite if the kitchen gets used hard. Marble if you'll love how it ages. Come see them in person and it gets easy.

Do you work with contractors and designers?

Yes, we work with builders, contractors, and interior designers throughout Massachusetts. We're happy to coordinate directly with your team. And if you have your own installer, we're glad to fabricate for them.

What's book-matching?

Book-matching is when we open two slabs like a book so the veining mirrors itself. It creates a dramatic, symmetrical effect, especially striking on a large island. It takes two slabs cut from the same block, though, so it depends on what's available when you're looking.

The Heart of the Kitchen

Kitchen Island Countertops

We understand

Deciding on an Island Isn’t Easy.

✓ Choosing the right island is no small thing.

✓ Whatever you decide, we’ve built it before.

✓ It’s already the centerpiece. The extras are optional.

How It Works

Kitchen Island Fabrication and Installation, Start to Finish

Visit & Select

We Handle Everything

Enjoy Your New Kitchen

Materials

Best Kitchen Island Materials

Quartzite

Granite

Quartz

Marble

Soapstone

Porcelain

Why Choose granite guy

Your Kitchen Island Fabricator

One Team, One Facility, Start to Finish

A Shop Built for Precision

Hand-Pick the Exact Slab You'll Get

See Slabs in Our Warehouse

Can't Find Your Slab? We'll Find It.

Fill out the form and access 34+ slab galleries across MA, NY, NJ & CT, in your email.

What Our Customers Say

Kitchen Island Installations We’re Proud Of

Timing

It’s Never Too Early to Reserve Your Slab

Just refreshing the kitchen?

In the middle of a remodel?

Big custom build on a long timeline?

Before you visit

Just Come See Us