Outdoor Fireplace Kits for DIYers and Pros

Masonry Outdoor Fireplace Kits Built for Fast, Affordable Backyard Upgrades

Buy Outdoor Fireplace Kits Here

Why Choose Our Outdoor Fireplace Kits for Your Backyard?

Not every outdoor fireplace kit is created equal. Ours kits are only masonry and are made from solid concrete block and lined with firebrick—just like a professionally built masonry fireplace, but easy enough to assemble yourself with no cutting, no mortar, and no need for specialized tools. Whether you’re planning a full outdoor living space or just want to add warmth and ambiance to your patio, our kits make it possible to create a permanent backyard feature that adds comfort, beauty, and real value.

All Kits are made with SOLID masonry made in the USA

Built in the USA

Our fireplace kits are constructed from superior, weather-resistant materials and designed for longevity.

Easy for beginners- we have step by step instructions and informational videos.

Easy Installation

NO Mortar, NO Cutting, NO special tools or skills needed. Install it yourself or hand it to a contractor—it just works.

See how you can customize your fireplace and combine it with other kits and options to make your outdoor patio uniquely yours.

Custom Options

Mix, match, and tailor components to create the perfect outdoor fireplace for your personal needs.

Transform Your Patio with a Ready-to-Assemble Outdoor Fireplace Kit

Design Your Own Outdoor Fireplace in Three Simple Steps

Building a custom outdoor fireplace kit for your backyard patio is straightforward with Cornerstone’s proven system. Our modular DIY fireplace kits let you create the look you want for your home—classic or contemporary—without the stress of sourcing materials or hiring a mason. Just pick your stone color, choose your firebox style, and start building your outdoor living retreat.

1. Choose Your Outdoor Fireplace Model

We make it easy to start. Pick from our selection of modular outdoor fireplace kits, each firebox kit is designed to suit different backyard styles and needs. From the space-saving Ashford to the elevated Bellrise for decks and patios, every model is crafted with solid concrete block construction, firebrick lining, and a refined stone finish.

Barrington outdoor fireplace comes in standard and 2-sided options. We even have an option for decks and raised patios.

Barrington

Bremley contemporary outdoor fireplace kit is availablein standard and two sided firebox options.

Bremley

Our Bremview TV fireplace kit has a large smokechamber section so you can easily add a 55" TV.

Bremview TV

Our Ashford model is compact in size but large on features.

Ashford

2. Customize Your Fireplace Kit with Popular Add-Ons

With all of our options, add-ons, and their configurations, you can build a fireplace in over 750 different ways! Configure every option to suit the wants and needs of your patio space. You can add grill islands and a pizza oven to your fireplace. But Most people start with these simple customizations below. Add these simple upgrades to our different base models to create your ultimate customized outdoor fireplace. You can use all options in singles or multiples. They can be fli-flopped. Some may even have an option or two of their own!

We call a pair of wood boxes our

Deluxe Wood Storage Boxes

We call a pair of wood boxes our "Deluxe" option. This common upgrade for your fireplace kit gives you stylish...

Estate wing walls add elegance to your fireplace. They make your fireplace appear larger and add separation between your patio and lawn.

Estate Wing Walls

Estate wing walls add elegance to your fireplace. They make your fireplace appear larger and add separation between your patio...

You can add chimney extensions in 24

Chimney Extensions

You can add chimney extensions in 24" tall sections up to a max of 48". Our outdoor fireplaces are not...

Expertly crafted, ultra-realistic gas log sets elevate your outdoor environment, creating an unforgettable gathering around the fireplace.

Gas Log Sets

Expertly crafted, ultra-realistic gas log sets elevate your outdoor environment, creating an unforgettable gathering around the fireplace.

3. Create and Enjoy Your Finished Outdoor Fireplace

Once you’ve chosen your model and any custom add-ons, it’s time to bring it all together. Your fireplace kit arrives ready to assemble, with pre-cut concrete blocks, detailed instructions, and everything you need to get started—no special tools or skills required.
Most customers complete their build in a weekend. What you get in return is more than just a fireplace—it’s a permanent backyard upgrade you’ll enjoy for years to come. From quiet evenings by the fire to memorable nights with friends, there’s real satisfaction in saying, “I built this.”

Beautiful Deluxe Estate Barrington Fireplace Kit built by one of our customers

Real Outdoor Fireplace Builds From Homeowners Like You

  • 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.

What to Expect From Our DIY Outdoor Fireplace Kits

A fireplace isn’t just a feature—it becomes the heartbeat of your backyard. It’s where people gather, talk, and linger long after sunset. And the best part? You can create all of it in a single weekend—no special tools, no subcontractors, no waiting. Build it, brag about it (or don’t), and enjoy a backyard your friends won’t stop talking about.

With our guidance and easy kits, you can build your dream outdoor living space in a weekend.

Save Time and Money with Speedy, Easy-to-Build Kits

Our pre-designed systems need no mortar, no cutting, and no special skills. Each block arrives clean, consistent, and ready to assemble, giving you a fast, stress-free build with zero surprises.

Know exactly what to expect with our detailed drawings, with dimensions and even our kits plans.

Expert Designs and Cost Certainty—No Surprises

You get detailed drawings, exact dimensions, and transparent pricing on every kit. Our curated components ensure the perfect blend of function, durability, and style—so you always know exactly what you’re getting.

Design your fireplace over 750 different ways!

Tailored to Fit Your Space with Endless Customization

Modular designs let you design countless outdoor kitchen and fireplace layouts. Mix, match, and configure each module to fit your space perfectly—pre-designed reliability with true custom flexibility.

Solid 8 inch masonry construction is fast to build durable and low maintenance.

Durable, Low-Maintenance Solutions You Can Trust

Our solid 8″ masonry construction is fast to assemble, weather-resistant, and built to last. You enjoy a beautiful outdoor space with minimal upkeep—and maximum longevity.

Add a Grill Station Directly to Your Outdoor Fireplace

Looking to take your backyard to the next level? All of our kits are designed to work together—whether you want your fireplace to stand alone or be part of a full outdoor kitchen with a matching grill station, bar, or countertop seating area.

Add a Unity G Grill Station to your outdoor fireplace kit to make a custom srill gtation

Unity-G Grill Station

Add a Unity G+ to your outdoor fireplace kit to make a custom grill station

Unity G+ Grill Station

Add a Unity K to your outdoor fireplace kit to make a custom Kamado station

Unity-K Grill Station

Add a Unity K+ to your outdoor fireplace kit to make a custom Kamado station

Unity K+ Grill Station

Add a Inity Z to your outdoor fireplace kit to make a custom Pizza Oven station

Unity-Z Grill Station

Add a Unity Z+ to your outdoor fireplace kit to make a custom Pizza Oven station

Unity Z+ Grill Station

Add a Unity C to your outdoor fireplace kit to make a custom Grill and Kamado station combo

Unity-C Combo Grill Station

Add any two or more unity outdoor kitchen modules to your outdoor fireplace kit to make a custom fireplace and cooking station

Multiple Unity Additions

Complete Your Space with a Matching Freestanding Outdoor Kitchen

All of our kits are designed to work together—whether you want your fireplace to stand alone or be part of a full outdoor kitchen with a matching grill station, bar, or countertop seating area.

Click here to view our u-shaped outdoor kitchen at layouts and ideas.
Browse Outdoor Kitchen Ideas
Browse our selection of configurable Unity Grill Stations and outdoor cooking / rill islands.
Explore Unity Grill Stations

Can You Really Build Your Own Outdoor Fireplace?

Yes—You Can Absolutely Build Your Own Outdoor Fireplace Kit
These DIY outdoor fireplace kits are designed for real homeowners and landscapers, not professional masons. With pre-cut concrete blocks, clear step-by-step instructions, and no need for specialty tools, you can create a beautiful, long-lasting fireplace in just a weekend.

Even if you’ve never built anything like this before, our system makes it approachable. Most pieces weigh under 10 pounds, and while some heavier lifting (up to 30 pounds) is involved, it’s manageable for most DIYers. Whether you’re a weekend warrior or just starting out, you’ll experience the pride that only comes from building something with your own hands—something you’ll use and enjoy for years.

Ease and Expert Guidance Every Step

We offer guidance at every step along your buy to build journey

Budget-Friendly Outdoor Fireplace Kits

We offer high-value and budget-friendly fireplace kits to increase the value of your property

DIY Pride: A Project Worth Sharing

The pride of accomplishment of building an outdoor fireplace kit is real- but only takes one weekend!

Watch How Easy It Is to Build a DIY Outdoor Fireplace Kit

Build your fireplace in a weekend youtube video

Learn from the Pro – Check Out Our How-To Videos on YouTube

You will learn what to expect when building this project yourself. All of Jake’s kits are perfect for installers or DIYers. You don’t need any special skills or tools. All the pieces you need are included in your kit. There is no cutting or mortaring the blocks. You simply stack and glue the block together.

Frequently Asked Questions About Our Fireplace Kits

Q: What types of fireplace kits do you offer?

A: We offer Standard Fireplace Kits (single-sided) and Two-Sided See-Through Fireplace Kits. Both options deliver timeless design and can be tailored to your backyard layout.

Q: What materials are the stone fireplace kits made from?

A: Each kit is built from solid, pre-cut concrete masonry blocks for proven durability and longevity. Each firebox is lined with high-quality firebrick for safety and heat retention.

Q: Are your outdoor fireplaces safe for burning wood?

A: Absolutely. Every DIY outdoor fireplace kit is designed for safe wood-burning use and includes a stainless steel spark arrestor for added peace of mind.

Q: Can I add a gas log set to my fireplace?

A: Yes. While our fireplaces are designed for wood-burning, you can easily install a gas log set for convenience. Many customers enjoy this upgrade for quick and easy fires.

Q: How much space do I need for installation?

A: Dimensions vary by model and selected options. Each product page includes detailed specs and diagrams to help you plan your space with confidence. Check the product page for exact dimensions.

Q: Can I install the fireplace kit on a deck or raised patio?

A: No. But, our Bellrise for Decks model is specifically designed for safe installation abutting raised patios or decks.

Q: How long does it take to assemble a stone fireplace kit?

A: Most customers complete their DIY fireplace kit in 2-3 days with basic tools. No cutting, advanced skills, or heavy machinery needed.

Customer Testimonials for Our Outdoor Fireplace Kits

All customer reviews are unfiltered

Click here to see all our Testimonials. They are unfiltered for true authenticity.

Buy Direct and Save on Your Outdoor Fireplace Kit

Cornerstone sells direct giving you unsurpassed value

No Middleman

By purchasing directly from us, you avoid unnecessary costs. This means you get premium materials and designs at a price that works for you.

We offer direct support from browsing to building so your project is a success.

Direct Support

Need help with your project? When you buy direct, you can count on our team for personalized guidance and support, every step of the way.

We build up to a quality standard- not down to a price point.

Expert Quality

Buying from Cornerstone means you’re getting authentic, expertly crafted products designed to last—no compromises.

Ready to Transform Your Home Outdoor Space?

DIY Outdoor Fireplace Kits can add timeless beauty, warmth, and functionality to your backyard.

Buy DIY Outdoor Fireplace Kits Here

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