DIY Outdoor Fireplace Kits that are Affordable and Easy-to-Build

Upgrade Your Backyard Fast with a DIY Outdoor Fireplace Kit

Buy DIY Fireplace Kits Here

Why Choose Our DIY Outdoor Fireplace Kits?

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. Includes all necessary components.

Design your fireplace over 750 different ways!

Customizable

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

Transform Your Backyard with Ready-to-Assemble DIY Fireplace Kits

Designing Your Own DIY Outdoor Fireplace Has Never Been Easier

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—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 retreat.

1. Choose Your Outdoor Fireplace Model

We make it easy to start. Pick from our selection of modular outdoor fireplace kits, each 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

Bremview-Fireplace-with-TV-Kit

Bremview TV

Ashfor is a small outdoor fireplace that comes with wood boxes standard.

Ashford

2. Customize Your Fireplace Kit with Popular Add-Ons

Firebox with Deluxe wood boxes option in cottage buff

Deluxe Wood Storage

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

Brimley fireplace kit in buff with attached seat walls

Estate Wing Walls

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

Chimney Extensions

Chimney Extensions

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

We offer outdoor gas log burner sets for your fireplace kit.

Gas Burner and Log Sets for Outdoor Fireplaces

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

3. Build and Enjoy Your DIY 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.”

This customer built a barrington fireplace to create a backyard centerpiece for gathering with family and friends.

DIY Outdoor Fireplace Kits—Built by Real Customers

Customer built outdoor fireplaces, fire pits, and grill islands

You Can Even Add a Grill Station or Outdoor Kitchen Combo

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

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.

Click here to view our u-shaped outdoor kitchen at layouts and ideas.
Browse Outdoor Kitchen Layout Ideas
L-shaped outdoor kitchen with pizza oven, gas grill, and integrated storage, ideal for outdoor cooking enthusiasts.
Explore Unity Grill Stations

Can I Build My 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

Fireplace-Build-Hearth

Budget-Friendly Outdoor Fireplace Kits

Barrington Kit Deluxe Estate in Cottage Buff DIY stone outdoor fireplace kit with double wood storage box and wing walls with columns

DIY Pride: A Project Worth Sharing

Friends giving cheers at an outdoor living party.

Watch How Simple 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

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.

Read Our Customer Testimonials

All customer reviews are unfiltered

Real customer testimonials.

Buy Direct and Save on Your Outdoor Fireplace Kit

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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.

Jake standing in front of a deluxe estate outdoor fireplace for scale.

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.

Summerset Sizzler 26 inch gas grill and natural stone countertops.

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?

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

Buy DIY Outdoor Fireplace Kits Here

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