DIY Outdoor Fireplace Kits Built as Permanent Stone Structures

The look of hand-laid rock—without mortar, cutting, or masonry experience.

Free planning resources, dimensions, and build guides available for your outdoor fireplace kit before you buy.

Browse Fireplace Kits

A Masonry Fireplace System—Not a Veneer Kit

Our fireplace kits are made from 8inch thick solid masonry blocks. This is not a veneer kit with a separate structure and adhered veneer. By using the structural blocks as the facade, you will save time and money while creating the look of hand-laid stone. Most of our fireplace kits are traditional, single-opening designs. We also offer see-through fireplace kits for layouts that benefit from shared warmth and visibility across two spaces.

Kit Building Progression to Patio

A Smarter Way to Build Outdoor Living

Our outdoor living kits are built on a single, proven masonry system. Every component is designed to work together, go together cleanly, and adapt as your space grows.
No cutting. No mortar. No unnecessary options. Just solid masonry features that look intentional, perform for decades, and are genuinely approachable to build—whether you’re starting with a grill island or tackling a full fireplace.

Learn How Our System Works

How the Fireplace System Works

Each outdoor fireplace kit is built from our custom designed solid-stone masonry system. This complete system has been designed from the ground up to make a durable and expandable outdoor system to get predictable results faster.

All Kits are made with SOLID masonry made in the USA

Built in the USA

Solid Masonry, Not Veneer

Our solid stone masonry kits are built to last. There is no veneer to peel, crack, or delaminate over time.

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

No-Cut Assembly

Simply Stack & Glue

NO Mortar, NO Cutting, NO special tools or skills needed. Just stack the blocks like LEGOs.

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

Modular Options

Make It Yours

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

Explore Our Fireplace Kits

Find the outdoor fireplace kit that fits your space, your budget, and your style—all built from solid masonry blocks and designed for easy, no-cut installation.

82 year old built his fireplace kit. So can you! Click here to discover his journey.
If this 82 year old can make it look easy- so can YOU

Can a DIYer Really Build One?

Doubt that you can build your own outdoor fireplace? It’s incredibly easy.

Don’t take our word for it. Ask Jim- our 82-year-old customer! He built his own DIY fireplace kit with one helper.

See Jim’s Journey

Choosing the Right Fireplace for Your Space

Choosing the right outdoor fireplace depends on how you plan to use your space. Start with the basics: Do you want a classic single-sided fireplace that anchors one main seating area, or a see-through fireplace that warms two zones at once? Perhaps you need a compact fireplace to make your space work- or maybe even a specialty solution like our Bellrise fireplace for deck or raised patios. After selecting the main “chassis,” you can begin customizing it.

Design Your Custom Stone Fireplace in Three Simple Steps

Barrington Classic DIY Outdoor Fireplace Kit shown in Cottage Buff Stone color

Choose Your Fireplace Base Model

Firewood box addition

Add the Options That Matter to You

DIY Outdoor fireplace with firewood storage boxes

Build at Your Pace and Enjoy the Result

Real 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.

These are just a few typical results from builders with no previous experience.

Why Homeowners Choose Our Masonry Fireplace Kits

A fireplace isn’t just a feature—it becomes the heartbeat of your backyard and your home. 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.

Predictable Result

Our pre-designed systems need no mortar, no cutting, and no special skills. Each kit arrives complete, 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.

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!

Fits Your Space

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

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

Built to last

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 or Build a Full Outdoor Kitchen

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

Unity Z Minus hardscape kit positioned beside a firepace kit for expanded cooking
Fireplace + Grill Station
Overview of a lively patio party featuring an outdoor kitchen and fireplace, creating a warm and inviting atmosphere for guests.
Fireplace + Outdoor Kitchen

Cost, Timeline, and Long-Term Value

Cornerstone sells direct giving you unsurpassed value

Cost

You avoid unexpected expenses and cost overruns associated with custom installations.

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

Timeline

Outdoor projects can be time-consuming. Take control of your project on your time at your pace.

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

Value

You’re getting curated, expertly designed products that last, are usable daily, and require little maintenance.

Common Questions About Fireplace Kits

Yes. The firebox and chimney system is designed specifically for wood-burning use and adheres to proven masonry fireplace principles when installed as shown in the instructions. Every kit is designed for safe wood-burning use and includes a fire brick-lined firebox, deep hearth, and a stainless-steel spark arrestor for added peace of mind.

These fireplaces are built from structural masonry units, not surface veneer. The stone is part of the structure itself, not a decorative layer applied over framing.

No. The system is designed for no-cut assembly using standard tools. The blocks stack and bond together without sawing or specialized masonry equipment.

Yes. The kits are engineered so homeowners can assemble them confidently using clear instructions, dimensions, and planning resources provided before and after purchase.

Outdoor fireplace kits can be installed on patios, slabs, or properly prepared bases. Placement depends on site conditions, clearances, and local codes.

Your fireplace should be installed on a proper footing or an existing patio that can support the weight of a masonry structure.Yes. Like all masonry-style structures, your fireplace requires a stable foundation. Many installations use an existing concrete slab. Many people use a crushed aggregate (paver) base, while others may require a small footing depending on soil conditions and local requirements.

Yes. The modular system allows for layout adjustments and optional components so the fireplace can be tailored to your space and design goals. While most kits feature the same size firebox, we do offer two-sided and compact firebox kits to ensure you get the size fireplace your home needs. Wood storage boxes, chimney extensions and more are available for all our fireplace kits.

When installed properly, these fireplaces are built to last for decades. The masonry construction is designed for long-term outdoor use with minimal maintenance.

For many homeowners, an outdoor fireplace becomes a long-term focal point for gathering, warmth, and everyday use. Compared to a fire pit, a masonry fireplace provides directed heat, wind protection, and a more permanent presence within the overall outdoor living space.

Beautiful Deluxe Estate Barrington Fireplace Kit built by one of our customers
Customer built outdoor living space using wood storage boxes, wing walls, and a chimney extension.

Ready to Create a Fireplace That Belongs in Your Space?

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

Choose Your New Fireplace
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