29. Extra Bedroom
One of the most popular upgrades is turning the area into a new bedroom for your growing family. An extra bedroom could alter the dynamic of your home. If you have many kids, this could mean they all have their room to sleep in now. Furthermore, the place could also act as a guest room for any visitors.
Moreover, depending on how many bedrooms you have, the value-per-square footage varies. Getting an underground living space would only increase your home's value by 50 percent compared to above ground, as discussed in this article's introduction. So, just $106 to $87.50 per square foot will be worth an additional basement bedroom.
