Brookholt was a Gilded Age mansion on Front Street in East Meadow, Long Island, New York.

Designed by Richard Howland Hunt, the house was built in the Colonial Revival-style, rendered in wood.

Alva had received a large settlement from the divorce, but the Long Island estate that she had helped design with Richard Morris Hunt, Idle Hour, was retained by William.

After a mason also died in an accident during the new construction, she wrote: "It really does seem as though Fate had decided I am never to sleep peacefully at night.

After that Belmont focused all of her attention on the women's suffrage movement, holding many meetings and rallies at the estate.