Leo David, 69, a vice president of the Carey Winston Company, a property management firm, died of cancer Monday at Sibley Memorial Hospital.

Mr. David, who was born in Washington, graduated from the old Central High School and George Washington University. He earned a master's degree at the Harvard business school.

He worked at David's, a men's wear store owned by his father in Washington, and served in the Army Air Forces in World War II. After the war, he worked briefly for Grosner's, a men's wear store owned by his father-in-law.

From 1948 to 1959, he had a number of businesses of his own, including a kitchenware store and a real estate firm. In 1959, he went into property management and worked for a number of firms in the Washington area. He joined the Carey Winston Company in 1974.

Mr. David, who lived in Bethesda, taught property management at American University and was honored last year in connection with the 25th anniversary of its College of Business Administration. He was a member of the Million Dollar Leasing Club of the Washington Board of Realtors and in 1972 was named property manager of the year by the Greater Washington Institute of Real Estate Management.

He was a past president of the Institute of Real Estate Management of Greater Washington and a former member of the National Governing Council of the Institute of Real Estate Management.

Survivors include his wife, the former Gerry Grosner, of Bethesda, and two daughters, Joanne Herrera of Houston, and Donna Understein, of St. Louis.

The family suggests that expressions of sympathy be in the form of contributions to a charity of one's choice.