Over the past 3 years we have used Cliff Tanaka for all our soils and structural engineering. He has specialized in foundation underpinning for 12 years and for the past 30 years has specialized in soil engineering. If you need a foundation evaluation he’s your guy. Cliff will asses the problem area and provide an engineered solution for your specific problem. He works throughout the San Francisco Bay Area. His number is 415-798-0444 if you are looking for someone how will honestly help you with foundation repair of any kind especially if you need to lift and level your foundation.