Olshan is one of the oldest, largest and most respected foundation contractors in the foundation repair and waterproofing industry. We bring value and confidence to property owners like you no matter what your foundation needs might be. We understand that your home is one of the biggest lifetime investments you’ll ever make, and we’re here to help you protect that investment. Thousands of property owners in over a dozen states have trusted us to restore and repair foundations, slabs, basements and crawl spaces and more since 1933.