Space is limited for private rooms at Walker Creek Ranch—most of the rooms are designed for shared use. But yes, there are a limited number of private rooms available (they cost more). First come, first served--sign up early! they often sell out the first day registration opens.
When space is available, we have overflow lodging, including private rooms, available at Marconi Conference Center--about 15 minutes away on beautiful Tomales Bay. There are also waterfront vacation rentals in the area. And there are plenty of motels available in Petaluma and Novato (25 minutes away).
Please note that private and semi-private lodging is available for full-time campers only. Half-time campers can be on a waiting list and take a room if one is available the week before camp, or stay at Marconi Conference Center or other off-site lodging.