Professional Outdoor Fireplace & Kitchen Kits

Stop building with temporary metal frames. Our dry-stack system allows you to build permanent, Indiana Limestone-topped retreats in a single weekend. No mortar, no saw cuts, no contractor required.

Cornerstone kits are modular, structural masonry systems designed for homeowners who want professional results without hiring a mason. Each kit is engineered to stack, lock, and perform like a permanent stone structure—using precision-fit components, gravity, and modern masonry adhesives—so you can create fireplaces, kitchens, and outdoor living spaces that look built-in, not DIY.

Bremley two-sided outdoor fireplace kit
Shop Fireplace Kits
Unity Outdoor Kitchen layout
Shop Outdoor Kitchens
Outdoor Grill Island category.

Kitchen Modules

Seat law and fire pit area kits

Seating & Accents

Fire spire stone fire chimney fireplace in Tan

Fire Features

Garden follies and ruins.

Garden Follies

Downloadable PDF Resources icon.

Technical Library

Build your fireplace in a weekend youtube video

How-To Videos

Made in USA

American Tumbled Stone Look

Unity L outdoor L-shaped corner bar countertop detail.

Real Indiana Limestone Caps

Cottage buff, blend, swatch.

Mortarless Dry-Stack Build

Curbside Delivery

Free Curbside Shipping Nationwide

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

Explore Our Easy-to-Build Outdoor Living Collections

Cornerstone kits aren’t “DIY projects” in the flimsy sense—they are structural masonry systems. We’ve eliminated the mess of wet saws and mortar, replacing them with a precision-interlocking block system. Whether you’re stacking a fireplace or configuring a kitchen, you’re building a foundation that won’t rust, rot, or degrade. This is how you build a backyard that feels like a permanent extension of your home.

Check out some of our hardscape kits:

Bremley Outdoor Fireplace kit in Castle Gray Blend

DIY Outdoor Fireplace Kits – Tumbled Finish & Timeless Style

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.

outdoor kitchen made from unity smart modules

Modular Outdoor Kitchens with Indiana Limestone Countertops

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.

Integrated Seat Wall & Classic Fire Pit Collections

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.

Sculptural Fire Spires & Wood-Burning Cooking Pits

Our “Tower Ruin” series reimagines the fire pit as functional yard sculpture, offering the dramatic presence of old-world masonry in two distinct scales: the 5′ Fire Keep and the massive 7′ Fire Spire. Each features a signature Cathedral Arch for a framed fire view and an open-top chimney design that keeps smoke clear of your guests. More than just a centerpiece, these towers include built-in notches for Dutch ovens and kettles, seamlessly transforming a high-impact architectural feature into a professional wood-fired cooking station.

Garden Follies outdoor patio design.

Garden Follies – Classic Masonry Looks Made Simple

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.



The DIY Alternative to Costly Masonry Contractors

You don’t need a crew of masons or a weeks-long construction schedule to transform your backyard. These featured projects were all built by homeowners—not contractors—using our intuitive dry-stack system. From custom-configured outdoor kitchens to towering fire spires, these real-world builds prove that with the right materials, “DIY” can still mean “designer.” Browse the gallery to see how our customers have used tumbled stone and Indiana Limestone to create professional-grade retreats in a single weekend.

  • 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: Professional Stone Results Without the Difficulties

We’ve spent two decades on every side of the hardscape industry—from the manufacturing floor and architectural specification desk to managing installations in the field. We knew the market was missing a system that bridged the gap: something powerful enough for complex, custom architecture, yet precise enough for a professional crew to install efficiently.

We designed the Unity System to meet those standards. We engineered these modules for the pros, stripping away the guesswork and complexity of traditional masonry to deliver consistent, site-tested performance. The result is a system so precise and intuitive that the same professional-grade outcome is now within reach for any homeowner. You aren’t just buying a kit; you are installing an architecturally engineered masonry system designed by people who have lived every side of this trade.

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

Start Your Design With Our Free Outdoor Kitchen & Fireplace 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 Guide to Design Your Outdoor Paradise

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