Fastest Way to Find Load Bearing Walls (General Contractor Explains)

TLDR

In the basic house Ross draws, ceiling joists likely run the short direction. A wall under the meeting point of split joists is a strong load-bearing clue, not a field approval. The recording compares a drop beam, a flush beam, and a smaller engineered opening; an engineer and the local authority still control the actual alteration.

Table of Contents

• How the Typical House Is Framed.
• Stick-Built vs Truss Roof.
• The Two Places to Verify.
• Drop Beam vs Flush Beam.
• The Point Loads Nobody Thinks About.
• The Pass-Through Shortcut.
• FAQ.

How the Typical House Is Framed

Picture a basic 1,500 square foot house, 30 feet deep and 50 feet wide. Walk in the front door. The ceiling joists above you run across the top of the house.

In Ross’s simplified example, the joists likely run the short direction. A 30-foot span would require a different member design, so his drawing splits the span: one joist runs 15 feet from each side and the two meet over a center wall.

That middle wall is load-bearing. It is carrying half the drywall load and doing the structural job of keeping the house from spreading apart.

If ceiling joists split over a wall, that wall is load-bearing until proven otherwise.

Walls running parallel to the joists may be partitions in this basic layout, but orientation alone does not establish that they are nonbearing or safe to remove. Get the structural engineer’s decision before planning the opening.

Stick-Built vs Truss Roof

The ceiling structure is either stick-built or trusses. You need to know which before you start planning any wall removal.

Trusses usually have metal plates stamped with the manufacturer’s name. They are engineered to span the full width of the house without a load-bearing wall underneath. But not all trusses are designed the same way, and some trusses do need a bearing wall. Which means even with trusses, you do not guess. Get an engineer to read the truss and tell you.

Pro Tip

The attic and crawl-space checks are clues, not permission to remove a wall. Use a structural engineer to confirm the load path and specify the change. The current International Residential Code design criteria require a complete load path from the loads through the resisting elements to the foundation; the locally adopted code controls the project.

The Two Places to Verify

The recording uses two places to gather clues before the engineering decision.

First, the attic. From a safe access point, identify the ceiling framing and whether joist pieces meet over a wall. That meeting point is a strong clue about the bearing line, not the final answer.

Second, the crawl space. Get underneath and look for a beam running the same direction as the load-bearing wall above, with piers underneath it at intervals. All load has to travel all the way down to the earth on a footing. The wall sits on that beam, the beam sits on piers, the piers sit on footings in the ground.

If you see a split in the joists above and a beam with piers below, that is a strong telltale sign of a load-bearing wall. It is still not a substitute for the engineer’s decision.

Drop Beam vs Flush Beam

You decide a wall has to come out. You have three options.

Drop beam. The replacement beam remains below the ceiling line and can be wrapped as a finish feature. Ross describes this as the easier option because the beam does not have to be inserted between cut joists. Temporary support, demolition, connections, and sequencing still belong in the engineered plan and qualified crew’s scope.

Flush beam. The beam sits within the ceiling depth so the finished ceiling can conceal it. In Ross’s example this involves altering the joists and connecting them to the new beam, which adds complexity and cost. It is an engineered alteration, not a cut-and-hang instruction.

A smaller opening. Keep some of the wall, just cut a pass-through big enough for sight lines. This is the cheap version I reach for most often. More on this below.

The beam itself is sized by your structural engineer. It might be laminated wood or steel. Your engineer specifies the beam and load path. Do not guess on beam size.

Post placement can change the whole job. If you do not want a post in the middle of the living room, you may try to hide it in an existing wall. In the source example, that stretched the span to roughly 20 or 30 feet. A span like that can mean doubled, roughly 14-inch LVLs or a steel beam that weighs hundreds of pounds and needs a lift. Those are examples from the walkthrough, not a sizing rule.

The Point Loads Nobody Thinks About

Here is the part most people miss. When you had a wall, the load spread evenly across the whole wall. Remove the wall and add a beam, and now all that load concentrates on the two end posts.

Those end posts need to transfer the load all the way down to the ground. That means through the floor system, through a beam under the floor, through piers, into a footing in the earth. A lot of older houses do not have footings built to handle concentrated point loads. So wall removal sometimes turns into crawl space work: dig out two new footings, pour concrete, build two new piers.

Wall removal can also affect electrical, plumbing, flooring, footings, piers, and drywall. The transcript names those scope items but does not give a reliable price range.

Ross uses a $5,000 contractor quote to make the point. That number may describe only the wall removal, not the electrical, plumbing, footings, flooring, and drywall around it. Price each line item instead of treating the wall quote as the full project cost.

And do not forget what is actually inside that wall. electrical wires running through the studs. plumbing in a kitchen wall. Switches, outlets, supply lines, drain lines. All of it has to be rerouted somewhere, and that somewhere might be a wall that already has cabinets installed, making access a nightmare.

The Pass-Through Shortcut

Most of the time, you do not need the whole wall gone. You just need the buyer to see the kitchen when they walk in the front door. That is part of the big three, the first three things they see when they approach and enter the house.

The shortcut is to cut a big opening in the wall, put in a header across the top with jack studs on each side, and leave the lower portion of the wall in place. Think of a counter-height pass-through, or a taller opening like an interior archway. Same structural technique as framing a large window.

The header, posts, connections, and footing path have to be sized for the actual load. That is the engineer’s scope, not a rule of thumb from this article.

Now the buyer walks in, sees down the hallway, and their eye catches the edge of the kitchen cabinets through the opening. Mission accomplished. You avoided some of the full-wall beam work, point-load changes, wire reroutes, and finish repairs.

If the goal is only a sight line for the Big Three, price a smaller opening before assuming the whole wall has to go.

FAQ

I am just starting out. How do I tell the difference between a load-bearing wall and a partition?

Look in the attic for joists that split over the wall, then look in the crawl space for a beam and piers under the same line. Those are strong clues. Parallel joists may point toward a partition, but neither visual check grants permission to remove the wall. Get the engineer’s decision.

Do I really need a structural engineer for every wall removal?

The video says to use a structural engineer before removing a wall. The attic and crawl-space checks help you understand what you are looking at; they do not design the replacement structure.

What does a structural engineer’s letter actually include?

In this source, the engineer determines whether the wall bears load, specifies the beam and load path, and provides a stamped letter. Ross uses that letter to move the structural decision and liability away from his own guess. The exact permit submittal depends on the local authority.

How much does a typical wall removal cost?

The source does not give a price band. Cost depends on the engineered beam and load path plus the electrical, plumbing, flooring, and finish work the wall contains.

The wall I want to remove has plumbing in it. Is that a deal-breaker?

Not automatically a deal-breaker, but the plumbing has to be rerouted through an approved path. Ross notes that an exterior-wall route may be constrained depending on where you live. Price the site-specific plumbing work before committing to removal, and compare it with a smaller opening.