In some Himalayan treks it is possible to stay in local homes. Expect simple rooms, local food and cultural interaction during your stay.
There are some Himalayan Tea House treks in India, of which very few are entirely homestay oriented and some more are partially.
Barsey Nature Trail
Barsey Rhododendron Sanctuary trek: Barsey, also spelled Varsey (Location 27.1942° N, 88.1183° E)
Darjeeling Tea Gardens Trek
Darjeeling Tea Garden Trek: A hiking trail inside tea plantations, along a river,
Deoriatal Chandrashila Trek
Deoriatal Chopta Chandrashila Trek: We are open for private/customised treks for your own
Har Ki Dun Homestay Trek
Private Har Ki Dun trek in Gangar and Osla Homestay: Note: As this
Mulkharka Lake Trek
Mulkharka Lake Trek: Mulkharka Trek is a pristine low altitude homestay trek in
Sandakphu Trek
Sandakphu Trek on Singalila Ridge: Fixed group departures for winter and spring-summer from
Sikkim Monastery Trail
Sikkim monastery circuit trek in homestays: The "Sikkim monastery homestay trek" is intended