To-Be-Built: Option 1 Home on Beach Lake... Welcome to Beach Lake, a brand new lakefront development that allows SHORT TERM RENTALS! Located just off the western shores of Castle Rock Lake, Beach Lake is a private 5-Acre lake set on 45 Acres. Lot 12 at Beach Lake features 99' of sand beach frontage to swim, fish, kayak, paddle board. Home package price: $449,000! Enjoy access to the Clubhouse with indoor pool, workout facility, tennis court, playground, and more. Pictures shown are of the former Model Home. Boat Launch 1/2 mile away!