Expanding your home downward instead of horizontally is the new gold standard in many big cities. This is especially true of today’s homeowner, who is often looking for ways to create the most space possible in their home, but find themselves restricted by zoning or available space.
When that happens, they often decide to underpin their basement and build down. That is not a process without its costs, however, and sometimes some significant structural changes have to be carried out in order to make everything work.
The structural alteration cost depends upon the basement in question as well as the work to be done.