If condensation seems to be the issue, then the excess water can often be the result of poor ventilation. If heating or air conditioning is unavailable in the basement, then the installation of a dehumidifying unit can be a simple fix that costs about $250.If the water pipes require insulation, then it will run between $50-$100. One of the most expensive problems to fix is crack in the foundation.This repair will require the help of a professional and can cost anywhere from $500 to $15,000.f condensation seems to be the issue, then the excess water can often be the result of poor ventilation. If heating or air conditioning is unavailable in the basement, then the installation of a dehumidifying unit can be a simple fix that costs about $250.