Property Tours Do not contact on-site staff. All property tours must be scheduled through the listing agent. Prospective purchasers are encouraged to visit the subject property prior to submitting offers. Marcus & Millichap has been chosen to exclusively market for sale 961 Plaza Drive, a large 9.03-acre parcel located off of State Route 49 in Grass Valley, California. The site is zoned C-2 (General Commercial), making it ideal for a variety of potential development uses.