The World’s Easiest DIY Masonry System

Build a luxury outdoor living space in a single weekend. No mortar. No masonry skills. 100% American Stone.

We sell Cru pizza ovens
we sell US-made Summerset grills
Primo USA made Kamado Grills
We proudly offer polycor natural stone countertops
Bremley two-sided outdoor fireplace kit
Shop Fireplace Kits
Unity Outdoor Kitchen layout
Shop Outdoor Kitchens
Made in USA

Made in USA

Castle Gray Swatch

Zero Mortar

Fireplace kit build- keep your blocks straight and flush

Weekend Assembly

Curbside Delivery

Free Curbside Shipping

Complete outdoor backyard Oasis made with Cornerstone Rocks DIY kits.
Make your entire patio rock with our complete line of matching hardscape features.

Find Everything You Need for a Stunning Outdoor Living Space

Whether you’re adding a cozy fireplace, a full outdoor kitchen, or extra seating areas, our modular kits are designed to complement each other perfectly. No guesswork, no clashing finishes—just one cohesive backyard retreat that feels like an extension of your home.

Check out some of our hardscape kits:

Bremley Outdoor Fireplace kit in Castle Gray Blend

Outdoor Fireplace Kits – Create a warm focal point for any gathering

Transform chilly nights into cozy get-togethers with a dramatic fireplace centerpiece. Our kits are designed for quick assembly and lasting performance, making it easy to bring that intimate, firelit ambiance to your backyard.

Spacious L-shaped outdoor kitchen with wood-fired pizza oven, combo grill, and ample drawer storage, perfect for large gatherings.

Outdoor Kitchens & Grill Islands – Cook, dine, and entertain all in one place.

Make your outdoor space the hub of every party by adding a fully functional kitchen setup. Our modular islands come equipped for cooking, storage, and prep, so you can whip up delicious meals without ever leaving the conversation.

Overhead view of large stone seatwall and round fire pit.

Seat Wall + Fire Pit Kits – Cozy Seating & a Shared Flame

Combine built-in seating with the warmth of a crackling fire in one easy-to-assemble kit. Choose curved, straight, or corner designs to suit your space and bring people together for memorable evenings under the stars. (Seat wall–only kits coming soon!)

Front facing outdoor fire pit tower.

Fire Pits – Enjoy evenings outdoors around a cozy flame.

Extend your backyard fun well into the night with a simple yet striking fire pit. Our kits assemble quickly and provide the perfect gathering spot for friends, family, and marshmallow-roasting memories.

Garden Follies outdoor patio design.

Garden Follies – Enchanting Structures for a Storybook Garden

Capture the whimsy of a vintage English countryside with our decorative garden follies. Designed to spark imagination, these eye-catching accents turn ordinary landscapes into magical hideaways—ideal for anyone looking to add a fanciful flourish to their outdoor space.



Built by Homeowners, Not Contractors

  • Customer built outdoor kitchen using Cornerstone.rocks Unity series modules.
  • Customer built outdoor fireplace with pergola.
  • Customer built outdoor fireplace kit with wood boxes night scene
  • Outdoor fireplace kit with TV customer build
  • Customer Pic of raised Barrington fireplace kit
  • Customer outdoor fireplace kit diy wing walls grey
  • Ashford small outdoor fireplace kit Customer Build
  • Customer built Outdoor Fireplace kit with wood storage boxes
  • Customer image of an amazingly built raised fireplace for deck
  • Customer testimonial pic
  • Customer pick Barrington outdoor fireplace kit with wing walls
  • Customer pick Barrington with wing walls back view.
  • Customer pic two sided fireplace patio.
  • Our great customers make great fireplaces.
  • A great fireplace build from a customer of ours.
  • An impressive Ashford outdoor fireplace build sent in by a customer.
  • Another great build from a great customer of ours.
  • Stylish customer build with custom mantle.
  • This customer built a relaxing getaway in their backyard.
  • Another impressive customer build.
  • Customer submitted build of a Barrington Deluxe.
  • Customer image of a really tall chimney.
  • Customer outdoor fireplace build.
  • Customer build of outdoor Grill Island with DIY LED lighting.
Owner Jake Shelby
Jake Shelby – founder of Cornerstone Rocks

Our Mission: Making Outdoor Living Simple and Accessible

We started as designers—determined to help homeowners and contractors build beautiful outdoor spaces without the usual hassle. After years of perfecting our interlocking block system, we’re proud to ship these American-made kits straight to your door. We support you at every step so you can enjoy the outdoors sooner and more confidently.

Download our DIY patio planning guide
Download our DIY patio planning guide

The Cornerstone Planning Kit

Most DIY errors happen before the first block is placed. “Will it fit on the patio?” “Do I have room for the bar stools?” We eliminated the math. Our proprietary Grid System lets you design your entire footprint using simple paper cutouts before you spend a dime.

This free guide includes scaled drawings of our outdoor features so you can mix, match, and arrange your ideal layout right at your desk.

Download our PDF to start planning your outdoor paradise today.

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