Experienced Trial Lawyers Committed to offering Direct Personal Service. The Law Offices of Mark R. Mittelman, P.C. practices law in Walnut Creek and Contra Costa County, California. Our entire staff is dedicated to helping clients with their legal matters. Our firm handles legal matters in the following practice areas: Litigation, Insurance Defense, Construction Defect, Construction Accidents, Automobile Accidents and Injuries, Wrongful Death, Slip and Fall, Products Liability, Liquor Liability, Landlord Habitability Defense, Torts, Negligence, Small Business Law, Contracts, Real Estate Litigation, Automobile Dealer Sales and Finance Litigation.