As both surgeon and real estate entrepeneur, Dr. Laszlo N. Tauber gets by on less sleep than most people.

During the day, Dr. Tauber, an intense man who looks younger than his 63 years, operates at Jefferson Memorial Hospital, an Alexandria general hospital that is principally owned by hi

At night, he closes business deals on the telephone, from his high-ceilinged apartment atop a Bethesda office building leased to GSA.

Dr. Tauber is building a Potomac home valued at more than $1 million for himself and his wife. Dr. Tauber managed to abtain the 36 acres it sits on virtually free of charge by buying 136 acres and selling the excess 1 1/2 years later at a high profit.

Dr. Tauber began dabbling in real estate in the 1950s, investing with other doctors and boyhood friends from Hungary in garden apartments. He used his profits from selling the units to develop the Westwood Shopping Center, Westwood Towers, and the Westwood Building along Westbard Avenue in Bethesda. He obtained his first GSA lease in 1962 on the latter building.

Dr. Taubert subsequently leased to GSA the Parklawn Building in Rockville, the AMC-Bush Hill Building in Alexandria, the Transpoint Building on Buzzard Point, and the Buzzard Point Building.

Dr. Tauber alternately portrays himself as an outsider who is treated unfairly by GSA officials and a personal friend of many of those same officials. With computer-like speed, he can rattle off the financial details of any of his own projects or those of his competitors.