Does anyone have any experience or knowledge of the feasibility and cost of adding a basement to a house? It occurred to me that a basement would make the ideal listening room and HT. However, my house, as does many homes in CA, does not have a basement.
The house sits on a concrete slab, so a basement would need to support it. On the other hand, that would really help to keep the noise of the world out, and keep the basement noise in the basement.
For a rough cost estimate, let's say the basement will be 1000 square feet, with two rooms, a bathroom, an interior entrance, and outside entrance.
While anything is possible if you throw enough money at it, let's say no more than 100K, or less. Is that reasonable or fantasy?