[...] some in three of the toniest villages on eastern Long Island are looking to slow down, or even stop, a growing trend of building ever-larger homes on small lots in local neighborhoods, far from the opulent multi-acre estates along the Atlantic Ocean. The village of East Hampton enacted new zoning laws last month aimed at restricting the size of new homes in certain neighborhoods; Southampton village is holding public hearings to consider similar action this week. Jay Diesing, president of the Southampton Association civic group, says local year-round residents — not the summer crowd of the rich and famous — are concerned about the incursion of mega-homes into local historic neighborhoods. The zoning changes address the permitted square-footage of a particular residence, while others focus on requirements for the homes to have enough parking spaces — a big issue among residents who complain about car-clogged residential streets. According to U.S.