The overall savings in the house framing might not even add up to $100, but if you’re project is running a little bit in the hole, you can always save a little bit of lumber this way.
The disadvantages to framing your interior walls 24 inches on center will be-
1. Studs that bow or twist can create uneven walls. If you have two studs that are bowing three quarters of an inch in their overall length, in the same direction, you’re going to have a visible curve in the wall. If you have three studs in a row and two of the studs are bowing in the opposite direction, you’re going to have a pretty uneven wall. Using 16 inch on center measurements, most of the time, this problem won’t be as bad.
2. Any plumbing or electrical running through the walls can severely weaken these walls.
I have never framed a house using 24 inch on center studs and probably never will, the cost savings really isn’t worth it in the long run. There are other ways to cut corners and still produce a nice product.
I did run into a house that was built during World War II that had studs spaced every 6 feet. Someone told me there was a lumber shortage because of the war at that time. If you wanted to build a house, you had to build homes very creatively.