Morris (Sonny) Abrams, 70, a real estate investor and retired Washington lawyer, died Friday at his winter home in Pompano Beach, Fla.

He had maintained offices on 5th Street NW near the courthouse complex, starting in 1931. He retired from active law practice in 1974.

During his years as a lawyer, Mr. Abrams also had been counsel to the Bakers Union and associated with the insurance business, selling probate and indemnity bonds through M. Abrams & Co.

More recently he became active in real estate and was a partner in the Twinbrook Co.

Born in New York City, Mr. Abrams grew up in Bridgeport, Conn. He came here to attend George Washington University Law School. After graduation he established his private practice.

He was a member of the Benjamin Franklin Lodge of the Masons and a life member of the Washington Hebrew Congregation.

He is survived by his wife, Rose D. of the homes in Pompano Beach and Bethesda; three daughters, Joy Shillman, of Pikesville, Md., Gay Waldman, of Bethesda, and Hope Kane, of Potomac, and 10 grandchildren.

The family suggests that expressions of sympathy may be in the form of contributions to the Suburban Center of the Washington Hebrew Congregation.