casa compostela guest house is also used for two additional activities:

exchange guest house:

the home is used as a trade or an exchange house for anyone with a comparable home in other parts of the world where the knowltons would like to stay.

foundation for natural agriculture and wildlife:

the home is part of the small sonoma county non profit foundation which is restricted to the main activity of offering a two week residence and financial award for selected individuals. applicants come from colleges, and special interest groups from organizations around the world.

casa compostela is open year round