Wet basements create mold, mildew, and ruin flooring and wall materials. They prevent a necessary space like a basement from being used effectively. Even worse, a wet basement and wet basement wall can become a structural liability if not resolved and will often prevent a home from being sold.
Basement waterproofing is inexpensive and easy to install as the home is being built. However for an existing home adding basement waterproofing is very expensive because it requires extensive excavation and landscape repairs.
The good news is that not all wet or leaky basements require adding waterproofing or new foundation drainage systems as a solution. Very often the source of wet basement walls or a leaky basement is on the outside of the home, above the ground and easily repaired. You may find that very simple things like improper roof drainage, improper ground slope or even your neighbor's drainage may be causing your problem.

