Q. We bought our home three years ago, and are finally ready to finish our basement to make a family room, guest bedroom and a bathroom while enclosing our laundry. Right now it’s just a big open space with a lot of columns. The ceiling is low, and we’ve had estimates to cut down the basement floor. It seems like a lot of money to do all these things at once, but we understand that we need to do it before the prices for materials, as we’ve been warned, go a lot higher. We want to know what needs to be done if we want to lower the floor, take out two columns so our recreation room is bigger, and put in a bathroom. Is there any way to save money?
A. This third column ties together the previous two to state that, basically, you get what you pay for, and sometimes less. I explained that basement bathrooms may not be allowed to have a bathing fixture, tub or shower, depending on the municipal requirements, and that many communities also won’t allow a bedroom in a basement, for safety reasons. I also outlined the process for figuring out beams so that columns can be removed, and that while “guessers” may save you some money up front, repairs can erase the savings.
Now we’re up to lowering the basement floor. “Saving money” and “lowering a basement floor” should rarely be in the same sentence, except for when writing an answer as to why. In general, you want more living space, structurally sound and waterproof. Both of those needs are hard to achieve if any part of the process is left out.
It’s always best to gain the most amount of interior space, and I can often tell when either saving money was the focus or amateur work was done when I see a foundation wall projecting into the basement like a concrete bench. To avoid this look and to get the most use out of the space, you have to start with knowing where the underground water table is. Unless you dig a hole or order a soil-boring test from a professional company, you may soon find out why the floor wasn’t lower to begin with. This test could save you great expense.
The process of correctly supporting the exterior concrete foundation walls is called “underpinning.” The excavation can be done from the interior side of the foundation wall if the exterior isn’t accessible. Either way, the underpinning process must be done in sections, not all at once. There would be complete collapses of walls and floors above if entire foundations were removed at one time. When this is done, it usually causes tremendous damage, possible death and news coverage.
Engineered sections, with waterproofing to the exterior, have to be planned. The old sections are carefully cut out, and then replaced several feet apart before the next sections are removed. Good luck!
© 2025 Monte Leeper. Readers are encouraged to send questions to yourhousedr@aol.com, with “Herald question” in the subject line, or to Herald Homes, 2 Endo Blvd., Garden City, NY 11530, Attn: Monte Leeper, architect.
