The Angell Law Firm, P.C. Real Estate Attorney The Angell Law Firm, P.C. is a real estate and business law firm located in Walnut Creek, California. We represent individuals and business clients throughout Contra Costa County and the San Francisco Bay area. We are dedicated to every client's needs and handle each case with compassion. Attorneys Matthew S. Angell and David S. McDonough understand that the legal issues at hand are crucial matters in our clients' lives.