Affordable DIY Outdoor Fireplace kits are fun to build and ship FREE

Our Ashford small fireplace kit is designed for small lots in metropolitan and suburban areas and small garden spaces. Wood storage included.

Ashford Small Fireplace Kit

Fireplace, Standard

Our Ashford small fireplace kit is designed for small lots in metropolitan and suburban areas and small garden spaces. Wood storage included.

Barrington Fireplace for decks Hero

Barrington Fireplace for Deck

Fireplace, Standard

Looking for a fireplace to update your deck? Our flush-mount fireplace is specifically built for a raised deck or patio.

Barrington-Deluxe-Estate-in full glory

Barrington Outdoor Fireplace Kit

Fireplace, Standard

Our most classic design, the Barrington fireplace, is a premium outdoor kit. Anyone can quickly build this wood-burning stone look kit.

Barrington See Through Fireplace Kit-Deluxe Estate Gray

Barrington See Through Fireplace Kit

Fireplace, See-Through

The Barrington See Through fireplace is a premium kit. It includes everything you need to enjoy relaxing around both sides of the fire.

DIY stone outdoor fireplace kit loaded bremley

Bremley Outdoor Fireplace Kit

Fireplace, Standard

Updated and upscale, the Bremley fireplace, is a premium outdoor kit. This wood-burning DIY kit is large and includes everything you need.

Bremley See Through Fireplace Kit

Fireplace, See-Through

Bremley See Through Fireplace is made for entertaining around the fire. Great for large patios and pool areas. Customizable to your vision.

Bremley TV-Deluxe-Estate Fireplace kit

Bremley TV Fireplace Kit

Fireplace, Standard

Our Bremley TV fireplace allows you to add a TV mounting option to your Bremley fireplace and easily mount a 55' TV and sound bar.

Cottage-Ruins-DIY-Fireplace-Wall-Kit only

Garden Ruins Fireplace

Fireplace and Seat Wall Ruins Kit

Have an outdoor living space separate from a structure? Are you looking for a unique patio idea? Check out our Garden Ruins line. You can choose from several faux ruins kits to create an old cottage ruins that will be the centerpiece of an amazing outdoor living space.

You have several outdoor fireplace styles from which to choose

Do you love the crackle and warmth of a real wood fire? Are you looking to add a wood-burning hardscape feature to our backyard? You have come to the right place. Cornerstone offers everything you need to turn your boring backyard into the envy of the neighborhood. Are you looking for something traditional? Our Barrington fireplace kit is at home in any decor. Perhaps you want a more modern fireplace. Check out our Bremley outdoor fireplace. Do you want something more upscale to raise your home’s value? Try adding options and upgrades to your fireplace kit. 

Perhaps you are a bit more daring or are looking for a backyard centerpiece the likes of which no one has seen. Experience our Fire Spire kit. A hybrid between a fireplace and a fire pit, the Spire is a functional fire-containing sculpture that stands approximately seven feet tall. This exciting new fire feature mimics an old-world tower ruin. It will be the center of attention at your backyard barbeque. It is also great for burning limbs and debris around the yard. Be bold. Claim your backyard dominance with our striking Fire Spire ruins kit.

You get a customized luxury fireplace that is safe and affordable

Cornerstone takes the unknowns and extra expenses out of creating a dream backyard gathering space. Your kit comes delivered with everything needed to create a wood-burning fireplace that looks great and drafts like a champ. Our full masonry fireplaces offer the best value you will find. Our fireplace kits feature ample-sized 28″ fireboxes lined with firebrick. The firebox gets wider passed the opening. This high-performing heat chamber is coupled to a full-sized chimney. The standard height is plenty tall to keep the smoke out of everyone’s faces. Unlike other kits, ours has a large built-in mantel and overhanging hearth. 

But it doesn’t stop there. We include a stainless steel spark arrestor for your safety. Other kits place large, heavy stones as chimney caps. These are dangerous to install and don’t prevent unwanted fires. We obsess over every detail to offer the best quality product in a complete package that is simple to install. It takes no special tools or skills to build our fireplace kits. And unlike other kits that are merely shells, you won’t have the added hassle and expense of covering your build with masonry veneer. Our outdoor living kits are complete upon installation. We believe we have a great product at a great value. But if you are not convinced and still have questions, call or contact us. We will gladly help you in any way we can. 

Why buy one of our DIY Outdoor Living Kits?

1. Our Kits save you money

Custom hardscape projects can get expensive fast. You can be out thousands of dollars and still be in the planning stage. Then, you pay for your contractor to troubleshoot their mistakes. Remove costly overhead by using our expertly designed kits. You can customize them to your needs and budget.

2. Our kits save you time

Getting a result isn’t easy. You must plan and research materials, products, and best practices (or contractors). Then someone must put the plan into actionable steps. Months can pass before a shovel hits the dirt. Using our predesigned and tested kits to get your project underway.

3. Our kits pay for themselves

Now is the time to spend money on your home. Most investments are losing value, and your money loses power sitting in a bank. Put money into your property that you can enjoy. Upgrading your home and expanding its useability isn’t just a monetary investment; it’s an investment in well-being. Moreover, you’ll recoup your investment when you sell your property.

4. Our kits are easy to build

You deserve a fantastic personal space to relax and recharge. Moreover, you deserve a rockin’ pad to throw parties and entertain guests. You also know how many hours procuring a rockin’ pad can take. Spend time enjoying your killer patio- not building it. Most of our DIY kits can be built in a weekend or less. You don’t need special tools or skills- our kits are fun and easy to build.

DIY stone BBQ grill station fireplace addition smoker, grill, and oven

Customize our DIY outdoor fireplace kits in over 750 ways to make it Uniquely Yours

Combine Masterson Grill Stations in tons of ways with and without other add-ons and options. Choose from over 750 unique combinations to build a fireplace that is truly unique. All of our features, kits, and pieces are made to work together in an easy-to-build, easy-to-customize modular system that will help you achieve your ultimate backyard in less time using less money. By using our curated kits, you can know exactly how your outdoor living space will look before you buy. No more paper napkin plans. Choose our premium outdoor living kits and enjoy your dream backyard faster and cheaper than you thought possible.

Fireplace with grill and pizza oven on separate sides
DIY Outdoor fireplace with firewood storage boxes
Fireplace with grill and kamado on separate sides with dual wing walls
Masterson DC Grill Station on Barrington Fireplace
Bremley TV-Deluxe-Estate Fireplace kit

You can easily customize your outdoor fireplace kit

Our DIY fireplace kits start with base models which you can customize. The Barrington model is the most traditional. You may want to choose a Bremley fireplace for a more modern design. Both models feature the same large 28″ firebox opening, as well as a large hearth and built-in mantel. Cornerstone only offers large, upscale outdoor fireplace kits. We do not hook you with a low-priced model that won’t fit your needs. All our kits are designed to impress at a price you can appreciate.

Getting what you want is simple.  First, you choose your outdoor fireplace’s color, followed by its style or shape. You can choose between a standard firebox or a see-through firebox. All our fireplace offerings are large premium kits. Once you have chosen the model of your outdoor fireplace kit, customize it with add-ons and packages. We are adding more options all the time. The styles aren’t endless, but there is more than enough to build a custom outdoor fireplace for your dream backyard.

Choose from two stone-colored blends

Castle-Gray Blend Outdoor kit color swatch

Castle Gray Blend

Cottage-Buff Blend Outdoor kit color swatch

Cottage Buff Blend

Choose from three outdoor fireplace models

Our DIY fireplace kits start with a base model from which you can customize. Cornerstone only offers large, upscale fireplace kits. We do not hook you with a low-priced model that won’t fit your needs. All our kits are designed to impress at a price that you can appreciate. The Barrington model is the most traditional. You may want to choose a Bremley fireplace for a more modern design. Or, if you can’t miss the big game, opt for our Bremley TV edition. All models feature the same large 36″ firebox , as well as large hearth and built-in mantel.

Buff Barrington DIY Stone Outdoor Fireplace Kit Standard





Bremley TV

Take your outdoor fireplace kit to the next level

Customize your fireplace with functional options

Customize your fireplace kit with add-on options and upgrades

Create the perfect setting for your outdoor paradise. No two backyards are identical. And no two families’ needs are the same. That is why we offer you tons of add-ons and options to configure your ultimate fireplace. All options are super simple to build and come with step-by-step instructions. Choose from these options or many more.

Chimney Extensions

Chimney Extensions

Add chimney extensions in 24″ tall sections up to a max of 48″ extra height. Stop at any 4″ increment.

Firebox with Deluxe wood boxes option in cottage buff

Firewood Storage Boxes

Add function to your fireplace with firewood storage additions. Available singularly or as a pair

Bremley Estate Castle Gray DIY stone outdoor fireplace kit

Estate Wing Walls

Seat walls add a crucial seating and border wall to your space. Piers function as tables, too.

Masterson DC Grill Station on Barrington Fireplace

Masterson-DC BBQ Grill Station

Add a sweet Grill Dome kamado grill station to your fireplace

Masterson-G Grill station with 32

Masterson-GC BBQ Grill Station

Host a Party with this killer BBQ grill station add-on.

Masterson-KC Grill station with 32

Masterson-KC BBQ Grill Station

Fireplace addition with BBQ grill and kamado smoker together

Masterson OC grill station with Summerset Grill and Pizza Oven

Masterson-OC BBQ Grill Station

Make yours a Fireplace with Pizza Oven and Grill

Masterson-VC Grill station with Summerset outdoor gas Pizza Oven

Masterson-VC BBQ Grill Station

Add a Pizza Oven to your Fireplace

Fireplace with attached grill stations including kamado, grill, and gas pizza oven

Double Mastersons Grill Stations

Combine Grill stations to create custom layouts

Cornerstone kits offer you many benefits

You have several options to choose from when deciding what and where to buy outdoor features for your backyard makeover. It is easy to get caught up in features and sizes, and prices. The decision can be daunting. But choosing an outdoor living solution doesn’t have to be stressful. We want to make it easy for you. If you need any help, contact us. We’re a small business that is easy to get in touch with and eager to help you with your project.

Cornerstone has brought the best people and products in the industry to design a comprehensive outdoor living suite that benefits you. We have analyzed the designs and features of fireplaces, ovens, and grills to bring you the best value on the market. Importantly, all our kits keep safety and best practices at the forefront of their designs. In addition, we have improved features where needed and removed anything that is high maintenance or unnecessary. As a result, we only offer tried and true designs that will be around for years to come.

Cornerstone Block System

Top Quality

Designed to the highest measures using the best materials available. We build up to a standard, not down to a price point.

Fireplace kit build- keep your blocks straight and flush

Easy to Build

Expertly designed so your mom could build it in a couple of days. Simple stack and glue construction is easy for beginners.

Stainless Steel Spark Arrestor

Safety First

Designed to be safe to build and safe to use. No large pieces in high places. Large hearth, mantle, and spark arrestor included for fire safety.

Great Value

Outdoor living will give you a high ROI while making your property more desirable. Build your kit yourself and save even more.

Your Safety Guides every Outdoor Fireplace Kit Design

Your fireplace kit has been designed up to a standard of excellence and safety. We don’t design down to a price point. From heavy angle irons, deep mantels and hearths, and stone appearance, see what we include in our kits that other companies ignore or charge more for.

Stainless Steel Spark Arrestor

Stainless Steel Spark Arrestor

Your safety is our top priority. Therefore, we include a spark arrestor with every kit. This addition will help prevent wildfires. It is much safer than a 100-plus pound stone found on other kits. Large stones don’t block floating embers from starting fires. Moreover, they are dangerous to install. We eliminate both problems with the best US-made spark arrestor available.

Large Hearth and Mantel

Can you believe some brands charge over a thousand bucks for a hearth? Hearths are needed to catch popping embers or if a fiery log rolls out of the firebox. Of course, our hearth comes included. Per best practices, we design all our fireplaces with a deep 12-16″ hearth for safety. Add a screen in your style for extended safety.

Large Hearth and Mantel
Standard Fireplace Hearth

Firebrick Lined Firebox

Our wide firebox dimensions help produce great draft and heating efficiency. The opening is wide to allow ample room for your fire while not being overly wide and inefficient. Firebricks add heat retention and longevity. Not likely needed in a lifetime, but the firebrick is a liner that can be replaced and protects the walls of your fireplace.

You can build our kits. Jake walks you through every step.

View our YouTube channel for How-To videos

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.

Customer Gallery

If these people built it, YOU can too!

Plan your outdoor living space with our handy dimension guides

Find all the dimensions needed to know what features will fit in your backyard space

I’m here to help with YOUR hardscape project!

If you have any questions, do not hesitate to contact me. You will NOT get a sales pitch. We will try to answer all your questions. My team is passionate about hardscapes and fireplaces. If we had the time, we could talk your ear off about the subject.

Technical questions, installation questions, shipping questions- please ask. We want you to be informed. Buying and installing a fireplace isn’t like purchasing a pair of shoes. If our product isn’t right for you, we will not hesitate to let you know. We are here to help you. We are only a phone call away.