Before built-ins around a fireplace are drawn, find out what kind of fireplace you have and get its clearance figures. For a masonry fireplace, the 2015 Michigan Residential Code keeps combustible mantels and trim — anything that can burn, like wood trim or a cabinet box — at least 6 inches from the opening. It also limits how far anything within 12 inches can stick out. A factory-built fireplace doesn’t follow that rule. It follows the clearances in its own listing.
Draw it the other way around and the correction lands on finished work. Cabinets or trim pushed tight to the opening can sit inside the clearance the code or the unit’s listing requires. The fix is cutting back or rebuilding cabinetry that’s already built and finished. Finishes that sit too close also take the fireplace’s heat.
Built-Ins Around a Fireplace Start With the Fireplace
Start with section R1001.11. For a masonry fireplace, the 2015 Michigan Residential Code text lets exposed combustible mantels or trim sit on the masonry front around the opening, but not within 6 inches of it. Within 12 inches of the opening, combustible material can stick out no more than one-eighth of an inch for every inch it sits away from the opening. The same section keeps wood framing and other combustible material at least 2 inches from the front faces and sides of a masonry fireplace. Its exceptions let trim touch the masonry under set conditions, so ask how the cabinet boxes themselves are treated before they’re drawn tight to the fireplace.
A factory-built fireplace works differently. Section R1004.1 says these units are listed and labeled, and installed to the conditions of their listing. A listing is the testing and label the unit carries, along with the installation conditions that come with it. So you won’t find its clearances in a general figure. They come from that model’s listing and its installation instructions.
Those two rules come from the 2015 edition of the code text. Your local building department enforces a particular edition. Ask which one before the design is final. The answer governs the drawing.
What Kind of Fireplace Do You Have?
As a general rule, a masonry fireplace is built in place from brick, block or stone. A factory-built fireplace is a listed unit framed into the wall, and the code says it carries a label. That difference decides which clearance rule the built-ins follow. So settle it first.
That label and the installation instructions can name the make and model. If the paperwork’s gone, you don’t have to guess. A fireplace professional can identify the unit, and your designer can plan around the figures it gives. Write them down before anyone sketches a cabinet.
Fireplace season is a good time to find that label and manual, before the room gets redrawn.
How Close Can the Cabinets Sit to the Opening?
For a masonry fireplace, combustible mantels and trim stay at least 6 inches from the opening. Any combustible material within 12 inches, cabinetry included, can stick out only one-eighth of an inch for every inch of distance. For a factory-built unit, the distance is whatever its listing says. There’s no single number that covers both.
That gap shapes the drawing too. It decides how the cabinet sides meet the surround. It also decides whether the built-ins sit flush with the fireplace face or step back from it. A flush wall can read calm and quiet. A set-back run can keep a stone or tile surround as the focus. Either way, it’s a drawing decision, and it gets made once the clearance is known.
Cabinet sizing lands here too. McDaniels’ own post on whether the room decides stock or custom cabinets makes the point that stock boxes are built around fixed sizes. A fireplace wall that isn’t even on both sides can be the kind of room where that choice gets made.
What Should the Built-Ins Hold?
Decide that before the drawing. Books and display pieces can live on open shelves. Media gear, games and cords can go behind closed doors. Heat-sensitive items may belong somewhere other than the cabinet right beside the opening. What the built-ins hold changes their depth and where the doors go.
There’s a tidy way to sort it. McDaniels’ kitchen post on where open shelving beats cabinet doors gives open shelves the walls where mess doesn’t land, and closed doors the walls where it does. The same thinking can sort a fireplace wall.
If a TV goes above the fireplace, plan the wiring path and an equipment cabinet before the cabinetry gets built. Chasing a cable through a finished bookcase isn’t fun. And check the fireplace’s instructions and the TV maker’s guidance about heat while the drawing is still open.
When Should the Clearances Be Settled?
Settle them before the built-ins are drawn, and before any cabinet is ordered. As a general rule, a clearance found after the cabinets are in means cutting back or rebuilding finished work. The same clearance found at the planning stage changes one line on a drawing. That’s the whole difference.
McDaniels’ remodeling page for the family room and other spaces says McDaniels can help create designs for spaces from the utility room to the basement, foyer and family room. It also mentions a family room that needs an update to keep up with a family’s entertainment and relaxation. A fireplace wall sits right in the middle of that.
Bring the fireplace’s paperwork and the room’s measurements to the first design conversation. With those in hand, the first sketch doesn’t have to be a guess.
Frequently Asked Questions About Fireplace Built-Ins
How far should built-ins be from a fireplace opening?
For a masonry fireplace, the 2015 Michigan Residential Code keeps combustible mantels and trim at least 6 inches from the opening, limits anything combustible within 12 inches to one-eighth of an inch of projection per inch of distance, and keeps other combustible material at least 2 inches from the masonry’s front faces and sides. A factory-built unit follows its own listing instead. Confirm with your local building department which edition it enforces.
Where do I find my fireplace’s clearance figures?
A factory-built fireplace is listed and labeled, so its label and installation instructions are the place to start. Those documents can name the make and model. If the paperwork’s missing, a fireplace professional can identify the unit and point you to its figures. A masonry fireplace follows the code’s rule in section R1001.11 instead.
Should I plan the TV before the built-ins?
Yes, as a general rule. The wiring path and an equipment cabinet are easier to settle before the cabinetry is built than after, and so is the spot the TV sits in. You’ll also want to read the fireplace’s installation instructions and the TV maker’s guidance about heat. A designer can work the answers into the cabinet layout.
How much do built-ins around a fireplace cost?
There’s no single figure. The price depends on the size of the wall, the materials, what the built-ins have to hold, whether stock sizes fit or custom sizing is needed, and the clearances the fireplace sets. A designer can price it once those are settled. That’s one more reason to bring the fireplace’s details to the first conversation.
What should I bring to a design consultation for fireplace built-ins?
Bring the fireplace’s make and model or its installation instructions, a photo of its label, and photos and measurements of the wall. Add a list of what the built-ins need to hold, including anything with a cord. Those details make the first conversation useful, and McDaniels’ experienced designers offer complimentary consultations.
Measure From the Opening, Then Design
At McDaniels, our designers bring years of experience and knowledge to your project and can help you see your home in a new light.
The best built-ins around a fireplace are drawn around the clearance. They aren’t squeezed into it later. Find out what kind of fireplace you have, get its figures, then design the wall.
For the cabinetry itself, McDaniels’ custom cabinetry page makes the showroom the one stop for finding the right cabinetry for every room in a home.
When you’re ready to turn that wall into a drawing, book a complimentary design consultation.
