Install a Drainage System
The best permanent fix for chronic basement leaks is to install drainage tubing below the basement floor that's connected to a sump basket and pump. You can install a system like this yourself, but breaking out the concrete floor, burying the tubing, and patching the floor is a lot of backbreaking work. Materials to do an average basement will cost $600 to $1,000. Expect to spend $3,000 to $8,000 for a professionally installed system in a standard-size basement.
Install Drainage Mats for a Warmer, Drier Floor
Inspect and Take Notes
You’ll need to do a thorough check of the ground around your foundation. For this you’ll need a 4-ft. level, a tape measure and a notepad. First draw a simple sketch of your house and yard on your notepad. Then use the level to check the slope of the ground around your foundation. Look for areas of sunken soil, garden beds with edging that protrudes to form a dam, and ground that slopes toward the house. Make notes on your sketch with arrows to show which way the ground slopes. This step will help you develop a plan for redirecting the water away from the foundation.