The Business School parking lot will be expanded to include space for 290 more cars, pending almost certain approval by the Boston building commission, Charles C. Pyne, Assistant to the University Administrator, said last night.

The University's plans, which include lengthening the present area by 24,000 square feet and remodeling the whole lot, will go before the commissioner within three weeks. "There is almost no doubt but that he will approve them," Pyne said.

He spoke last night before the Riverside Neighborhood Association of Cambridge, and revealed the new developments in an interview afterwards.

Work will begin on the project immediately after the commissioner gives his permission, Pyne said. He estimated that the whole lot will be finished within two weeks after the start of construction, at an estimated cost of $10,000.

The expansion of the area will allow for 90 autos, and by narrowing the present wide aisles between cars and removing a road that goes through the lot, the University hopes to have room for 200 more.

Pyne made it clear that the 290 new spaces will be almost exclusively for undergraduate use. Faculty and workers, however, will be allowed to part there.

Commenting on the present situation, he said this would be a great step toward cutting down the undergraduate overnight parking problem.

In his speech, Pyne said this problem is caused because resident students continue to bring cars to school, and "although we discourage them from bringing autos, the University will never pass a law to that effect."