How to Create a Home Addition by Combining Rooms with Structural Wall Changes
People call us all the time asking about home additions. And I get it — you need more space. But before you spend $80,000–$150,000 building out, let me ask you something: have you looked at what's already inside your walls?
Combining two rooms by removing the wall between them is REAL square footage. You're not adding it — you're revealing it. The space was always there. You were just splitting it in half with a wall that didn't need to be there.
This Is Not the Same as Just Removing a Wall
When you're combining rooms strategically — like turning a formal dining room and kitchen into one big open space, or merging a spare bedroom with a master suite — you're not just swinging a sledgehammer. There's planning involved. Load path analysis. Structural calculations. Beam sizing. Permit pulling.
We've done this 12,000+ times since 2015. The ones that go sideways are always the ones where someone skipped the engineering step and just started demoing. Don't do that.
Step One: Figure Out If That Wall Is Load-Bearing
This is the fork in the road. If the wall between your two rooms is just a partition — non-structural framing — you can remove it with minimal complexity. If it's load-bearing, you're still removing it, you're just doing it right: temporary support walls, PE-stamped drawings, a beam installation, and inspections.
Signs it's load-bearing: runs perpendicular to your joists, sits above a beam or foundation wall below, lines up with walls on other floors. But honestly — just let us come look. We can tell in about 90 seconds. We've seen enough of these to know.
The Beam Is the Secret Weapon
When you combine rooms across a load-bearing wall, the beam becomes the spine of the space. Sized right, it's invisible — hidden in the ceiling or flush with the drywall. We typically run W12x30 steel for longer spans. LVL (laminated veneer lumber) works great for shorter ones and gives you that cleaner, wood-look finish if you want it exposed.
Our in-house Professional Engineer sizes every beam. Not guessing. Not Googling a span table. Calculating, stamping, submitting for permit.
Utilities: The Annoying Part Nobody Talks About
Electrical, plumbing, HVAC — these love to run through walls. When you're combining rooms, there's a decent chance something's in there. We scope this out before demo. Electrical gets rerouted. HVAC ducts get redesigned. Plumbing... plumbing's the wild card. Depends what's running and where it needs to go.
We coordinate the subs. You don't have to manage three different trades showing up on different days and stepping on each other.
What You Actually Get
A combined space is a TRANSFORMED house. We've done living/dining combinations that make 1,800 square feet feel like 2,800. Kitchen/breakfast room merges that turn tight galley kitchens into actual gathering spaces. Master bedroom expansions that finally give you the suite you've been dreaming about.
And it costs a fraction of building an addition. Most residential structural wall removals run $3,000–$9,000 depending on span, foundation type, ceiling height. That's it. One day of work. Done.
Where We Operate
DFW out of our Plano headquarters, Houston out of The Woodlands, and Austin out of Lakeway. If you're in Texas and you're thinking about combining rooms, give us a call. DFW: 214.624.5200. Houston: 713.322.3908. Austin: 512.641.9555.
Install the Beam, Reveal the Dream. That's what we do.