If your basement is leaking, it's important to take action quickly to prevent further damage. Here are some steps you can take to address the issue:

Identify the source of the leak: The first step is to identify the source of the leak. Check for cracks or gaps in the walls, floor, and foundation, also look around basement windows as this is a common location for cracks to occur, and look for signs of water damage, such as water stains or puddles. If the basement has finished drywall consider drilling a small hole to fit a small camera inside to inspect for the point of entry, these small holes will be easier to patch afterwards.

Clear the area: Move any furniture, electronics, or other items away from the area to prevent further damage. You may also need to remove any standing water using a wet/dry vacuum or pump.

Address the cause of the leak: Depending on the source of the leak, you may need to take different actions. If the leak is caused by a burst pipe, for example, you'll need to turn off the water supply and call a plumber. If the leak is caused by poor drainage or a false water table, you may need to install a drainage system or address grading issues.

Seal the leak: Once you've addressed the underlying cause of the leak, you'll need to seal any cracks or gaps to prevent further water intrusion. This can be done using waterproof sealants, epoxy injections, or other materials designed for this purpose.

Prevent future leaks: Finally, it's important to take steps to prevent future leaks. This can include regular maintenance and inspections, installing a sump pump, ensuring proper gutter and downspout placement and functionality, and addressing any other issues that may be contributing to the leak.

If you're not sure how to address the issue or if the damage is extensive, it's best to consult with a professional who can provide expert advice and help you find the best solution for your specific situation.