Sinai Engineering Contractor (better known as Sinai Construction), is the most reputable and most experienced foundation repair company in Los Angeles with over 30 years' experience in foundation repair and other structural and concrete work. Sinai Engineering Contractor is also quite well known for providing some of the most thorough foundation inspections in Los Angeles. Our Los Angeles foundation inspection services include soft story inspection, general foundation inspection (for seismic retrofit, foundation repair, foundation replacement, and floor leveling purposes), retaining wall inspection, drainage inspection, waterproofing inspection, and slope repair inspection. Certified for earthquake retrofitting by the Los Angeles Department of Building and Safety (LADBS) and the Los Angeles Department of Housing (LAHD) Authorized for trench excavation by the State of California Department of Industrial Relations, Division of Occupational Safety and Health (OSHA) Experienced in projects involving the Federal Emergency Management Agency (FEMA), Los Angeles Neighborhood Housing Services (LANHS) and the Community Development Commission (CDC) Up to $2,000,000 aggregate general liability insurance. Worker's Compensation