Is This Wall Load-Bearing? Checklist

Thinking about opening up a wall? Answer what you can see about the joists, the floor below and the roof above. You get a rough likelihood and the reasons. It is a first look, not an engineering opinion.

Answer what you can see

Pick the closest answer for the wall you want to change. Choose "I'm not sure" when you cannot tell. The attic and the basement or crawl space are the best places to look. Turn off power and stay off any unsafe framing.

1. Which way does this wall run compared with the joists above it?

Joists are the parallel boards holding up the floor or ceiling above. Look in the attic, or at the underside of the floor from the basement.

2. What is directly above this wall?

3. What is directly below this wall?

4. In the basement or crawl space, are there posts, columns or piers that line up under this wall?

5. Where is the wall in the house?

6. In the attic, do the ceiling joists overlap or splice on top of this wall?

Joists from the two sides lap side by side or butt end to end right above the wall.

7. How is the roof framed?

8. About how old is the house?

Result

Clues pointing to load-bearing

    Clues pointing to not load-bearing

      Neutral or still unknown

        Do not remove or cut any wall because of this result. Even a wall that looks non-bearing can hide a point load, a duct, wiring or plumbing. Always have a structural engineer or architect confirm before demolition. If a load-bearing wall is removed wrongly, floors can sag and the house can be damaged.

        How this checklist works

        Each answer adds or removes points. Clues that suggest the wall is carrying weight add points, and clues that suggest it is not take points away. The total sets the result: 6 or more is "likely load-bearing", 2 to 5 is "possibly", and 1 or less is "likely not". Answering "I'm not sure" adds nothing. If you cannot answer at least four questions, the tool tells you it does not have enough information. An exterior wall or joists spliced over the wall always raise the result to "likely load-bearing". This is a screening aid built on common rules of thumb. It is not an engineering analysis.

        ClueWhy it matters
        Wall perpendicular to joistsThe joists rest on the wall, so it may carry them. Parallel walls usually carry less, but not always.
        Wall stacked over another wallLoads travel straight down through aligned walls to the foundation.
        Beam, girder, foundation wall or posts belowBuilders put support under a wall that carries load.
        Exterior wallExterior walls carry roof, floor or both in almost every house.
        Near the middle of the houseA central wall often supports the middle of the floor or ceiling joists so they can span a shorter distance.
        Joists spliced over the wallThe wall is the bearing point where two joists meet.
        Roof trussesTrusses usually span exterior wall to exterior wall, so interior walls often carry little roof load. Girder trusses and some designs do bear on interior walls.
        Slab-on-grade or older houseOn a slab, the wall may sit on a thickened slab with no visible support under it. Older homes more often used several interior bearing walls.

        What removal can cost

        Typical published ranges (replace with local quotes). Prices vary a lot by region, wall length and what is inside the wall.

        ItemTypical range
        Remove a non-load-bearing wallAbout $300 to $1,000, more if wiring, plumbing or finishing repairs are needed
        Remove a load-bearing wall, single-story houseAbout $4,000 to $10,000 (HomeGuide)
        Remove a load-bearing wall, multi-story houseAbout $9,000 to $15,000 (HomeGuide)
        Structural engineer assessmentAbout $300 to $1,000 (HomeGuide)
        Support beamAbout $3 to $35 per linear foot, most often $10 to $15 (HomeGuide)

        Permits

        Removing or changing a load-bearing wall is a structural change, and it nearly always needs a building permit, often with engineer-stamped drawings for the new beam and posts. Some jurisdictions also require a permit when a non-load-bearing wall holds wiring, plumbing or ducts. Rules differ by city and county, so check with your building department before any demolition. Unpermitted structural work can cause trouble with insurance and when you sell.

        This tool does not provide engineering or design advice and cannot tell you a wall is safe to remove. It does not replace inspection by a licensed structural engineer or architect.

        Sources

        Estimates only — not engineering, legal or code advice. Check requirements with your local building department and a licensed professional before you build.

        Common questions

        How can I tell if a wall is load-bearing?

        Look at which way the floor or ceiling joists run. A wall that runs perpendicular to the joists above it is more likely to be carrying them. Walls that sit directly over a beam, girder or foundation wall, that stack under another wall above, or that sit under a splice in the ceiling joists are also likely load-bearing. Exterior walls almost always are. None of these clues is proof, which is why a structural engineer should confirm.

        Are interior walls ever load-bearing in a house with trusses?

        Less often. Roof trusses usually span from one exterior wall to the other, so most interior walls under them carry little or no roof load. But some trusses are supported by an interior wall or by a girder truss, and floor framing below can still bear on interior walls. Do not assume a wall is safe to remove because the roof uses trusses.

        Is a wall parallel to the joists safe to remove?

        Not automatically. Parallel walls often carry no joist load, but a wall can still support a joist splice, a beam end, a point load from above, or a wall on the floor above. Parallel is a good sign, not a clearance.

        How much does it cost to remove a load-bearing wall?

        Published guides such as HomeGuide list roughly $4,000 to $10,000 for a single-story house and $9,000 to $15,000 for a multi-story house, with a structural engineer adding about $300 to $1,000. A non-load-bearing wall commonly runs about $300 to $1,000. These are typical ranges, so replace them with local quotes.

        Do I need a permit to remove a load-bearing wall?

        Almost always yes. Structural changes generally need a building permit and often engineer-stamped drawings for the beam and posts. Rules vary by city and county, so ask your building department before any demolition. Some places also require a permit for non-load-bearing walls if wiring, plumbing or ducts are inside.

        Why is the result sometimes 'not enough information'?

        The score counts only the questions you can answer. If most answers are 'I'm not sure' there is not enough evidence to lean either way, so the tool says so instead of guessing. Looking in the attic and the basement or crawl space usually answers most questions.

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