Unlike HOWL or other land trusts, Alapine residents own unique properties on the premises. Each deed gives Alapine’s management organization, Sheeba Mountain Properties, a right of first refusal for purchase. The idea was that there would be a waiting list of women to whom they could sell an open property. But there is no waiting list, and there are still 45 buildable lots.

Should a property owner wish to sell, she is welcome to accept an offer from any buyer, regardless of gender, which could upend the ideology of the place.

“You can’t tell the person who owns the house next to you that they can’t sell to a transgender person,” Ms. Lieu said, though an informal contract among the residents does codify an agreement that each would find a lesbian buyer.

There have been rumors of new separatist communities springing up elsewhere. Dr. Luis heard of one run entirely by trans women in the South. The rumors place it on an alpaca farm. On Facebook, a rather secretive group hints at a female-led eco-village in Europe. There are also retreats and businesses built to meet a demand for women-only spaces.

But those reflect a new world, one in which feminism is marketable and where college-educated women make up more than half the American work force. Maybe it’s time to stay?