But Peter Klein, a builder active in low-cost housing programs and former president of the Long Island Builders Institute, said this effort was not enough.

The voters' forum also took issue with the Long Island Builders Institute, a building industry organization with more than 650 members, which contributes to both political parties.

Robert A. Wieboldt, the executive vice president of the Long Island Builders Institute, said the board's open-space plan would have negative economic effects.

Charles B. Manicini, the co-president of the Long Island Builders Institute, said he had not seen any downturn in sales.

Gregory Mancini was a director of the Long Island Builders Institute and taught courses in its real-estate education programs.

Mr. Schwenk formerly was executive director of the Long Island Builders Institute.

In addition, a broken window makes an entire structure vulnerable, said Robert Wieboldt, the executive vice president of the Long Island Builders Institute.

In 1941, he helped found the Long Island Builders Institute, a trade group, and in 1947 became its second president.

The Long Island Builders Institute is among the pro-business groups that support the measure and deny any Machiavellian motives.

Last year he quit as director of the Long Island Builders Institute to join conservationists in seeking to control growth.

But Peter Klein, a builder active in low-cost housing programs and former president of the Long Island Builders Institute, said this effort was not enough.

The voters' forum also took issue with the Long Island Builders Institute, a building industry organization with more than 650 members, which contributes to both political parties.

Robert A. Wieboldt, the executive vice president of the Long Island Builders Institute, said the board's open-space plan would have negative economic effects.

Charles B. Manicini, the co-president of the Long Island Builders Institute, said he had not seen any downturn in sales.

Gregory Mancini was a director of the Long Island Builders Institute and taught courses in its real-estate education programs.

Mr. Schwenk formerly was executive director of the Long Island Builders Institute.

In addition, a broken window makes an entire structure vulnerable, said Robert Wieboldt, the executive vice president of the Long Island Builders Institute.

In 1941, he helped found the Long Island Builders Institute, a trade group, and in 1947 became its second president.

The Long Island Builders Institute is among the pro-business groups that support the measure and deny any Machiavellian motives.

Last year he quit as director of the Long Island Builders Institute to join conservationists in seeking to control growth.