Top real estate broker Paul Brennan has helped buy and sell the stately homes of former mayor Michael Bloomberg, designer Calvin Klein and ex-J. Crew chief Mickey Drexler. Now Brennan is selling a home of his own in Sag Harbor.

The ultra-modern 3,000-square-foot home at 15 Deerwood Path is asking $2.65 million.

Designed by Stelle Lomont Rouhani Architects, the property comes with four bedrooms, a pool and a hot tub — all on 2 acres. The first floor features striking floor-to-ceiling glass windows, and an open kitchen, dining and living area.

Upstairs, the master suite includes a steam room. Brennan, of Douglas Elliman, is the listing broker.