Custom Stone Fireplaces in Duluth, MN

Stone fireplace under construction in a wood-paneled room. Scaffolding, buckets, and stone pieces are visible.
Stone fireplace in a wood-paneled room. Firebox has a black interior. Two windows flank the fireplace.

Add Warmth and Beauty With a Custom Stone Fireplace

A fireplace is more than just a heat source—it’s a focal point, a gathering place, and a signature element of your home. At Stone Forge LLC, we specialize in custom-built stone fireplaces that bring natural elegance and lasting function to both indoor and outdoor living spaces.



We use high-quality natural and veneer stone to design fireplaces that match your style, fit your layout, and perform season after season. Whether you’re adding ambiance indoors or enhancing your backyard, our fireplace builds combine old-world craftsmanship with modern precision.

Indoor & Outdoor Stone Fireplace Construction

We offer complete fireplace design and installation services for both interior and exterior applications. Our process includes planning, layout, material selection, stone setting, and finishing—everything you need to bring your vision to life.

Indoor Stone Fireplaces

Warm up your living room, basement, or great room with a custom indoor fireplace built from natural stone, brick, or manufactured veneer. Whether you prefer rustic fieldstone or a sleek, modern layout, we can create a fireplace that complements your home’s design while offering real comfort and charm.



We install:

  • Wood-burning and gas-ready fireboxes
  • Stone surrounds and mantels
  • Floor-to-ceiling statement walls
  • Hearths and bench seating
  • New construction or fireplace retrofits


We work with contractors, architects, and homeowners to ensure proper venting, code compliance, and design integration.

Outdoor Stone Fireplaces

Bring year-round comfort and value to your backyard or patio with an outdoor fireplace built to endure the elements. Outdoor fireplaces add both function and atmosphere, making your exterior space feel like an extension of your home.



Popular features include:

  • Wood-burning or gas-fed fireboxes
  • Built-in storage or wood boxes
  • Integrated seating and walls
  • Covered patio installations
  • Paired outdoor kitchens and fire pits


We build outdoor fireplaces with durable materials designed to resist freeze-thaw cycles, moisture, and heavy use.

Materials & Design Options

We offer a wide range of material and layout choices to match your home’s style and your personal taste. Options include:

  • Natural stone (fieldstone, limestone, granite, etc.)
  • Cultured stone veneer
  • Reclaimed Barnwood
  • Premium Tile * Corten Steel
  • Stucco finishes
  • Thin-cut stone for indoor builds
  • Mortar styles and finishes
  • Custom mantels, surrounds, and hearths
  • Stone blending for a natural, organic look


Every fireplace is built with structural integrity and ventilation in mind. We use reinforced backing, fire-rated materials, and proper flashing to ensure safe and long-lasting performance.

Our Fireplace Installation Process

  1. Design Consultation - We meet with you to understand your goals, space, heating needs, and design preferences.
  2. Site Review & Planning - We assess framing, gas or wood setup, venting access, and other key site factors.
  3. Material Selection - We help you choose stone types, layout, mortar color, and detailing to match your vision.
  4. Installation - Our team handles every step of the build—framing, firebox setup, masonry, and finishing—while keeping your space clean and disruption to a minimum.
  5. Final Review - We walk you through the completed fireplace to ensure it meets your expectations and is ready for use.

Why Choose Stone Forge for Your Fireplace Project?

With more than 20 years of masonry experience in the Duluth area, we know how to build fireplaces that look incredible and stand up to Minnesota’s climate.



Clients choose us because we offer:

  • Fully customized fireplace design
  • Experienced indoor and outdoor masonry crews
  • High-quality natural stone and veneer products
  • Clean, professional job sites
  • Seamless integration with existing architecture
  • Reliable timelines and fair pricing
  • A proven local reputation for craftsmanship


We’re not just installers—we’re builders, designers, and artisans. Whether you’re finishing a new construction home or adding value to an older property, we can help you design a fireplace that fits your space and lifestyle.

Living room with a stone fireplace, dark ceiling fan, tall windows, and a staircase.

Ready to Build Your Fireplace?

A custom fireplace is an investment in comfort, beauty, and resale value. Let Stone Forge help you design and build a feature that makes your space warmer—inside or out.