Custom Marble · Granite · Countertops
Stone, shaped to your home.
Washington Stone Corp fabricates and installs custom marble, granite and quartz — from slab selection to sealed, finished countertop — serving all of Long Island from Middle Island, NY.
What We Do
Every step, one shop.
We supply, fabricate, install and maintain your stone — one shop, start to finish.
Supplies
Marble, granite, quartz and quartzite slabs — hand-picked for your project.
Fabrication
Every cut, edge and sink cutout made in-house to exact measurements.
Installation
Delivered, leveled and set by our own crew — countertops, vanities, fireplaces and more.
Service
Chip repair, re-polishing and seam refresh that make worn stone look new.
Maintenance
Simple sealing and care plans that keep your stone protected year after year.
Materials
Choose your surface.
Natural and engineered stone, each with its own character — we'll help you match beauty to durability.
Marble
Granite
Quartz
Quartzite
Countertops · kitchen islands · bathroom vanities · fireplace surrounds · backsplashes · tables & custom pieces — if it can be made in stone, we can fabricate it.
Our Work
Built to be admired.
Project photos coming soon — follow @washingtonstonecorp for our latest installs.
The Process
From slab to installed.
Estimate
Call, email or DM us your measurements or plans — we quote fast and free.
Select
Pick your stone — we guide you through color, veining, finish and edge profiles.
Fabricate
We template your space and cut every piece to precise measurements.
Install
Our crew sets, seals and finishes — and we stand behind the work after.
Why Choose Us
One shop, start to finish.
We supply the slab, fabricate every cut in-house and install it ourselves — so nothing gets lost between trades.
In-house fabrication
Every cut and edge done ourselves, not farmed out.
All of Long Island
Middle Island to Smithtown, we come to you.
Estimates in 24h
Send measurements, get a real quote fast.
We stand behind it
Sealed, finished, and backed after install.
Get In Touch
Start your project.
Call or Text
(631) 384-2645Location