Lake Holiday offers buildable lots that have water and sewer access as well as membership lots that can be used only for lake access. You can read more about membership lots here and about building a home in Lake Holiday here.
There are VERY few decent buildable lots left, and only a couple of waterfront lots. Membership lots are hard to find currently as well. Most of the undeveloped land you see around the lake is common area with trails and will not be developed at any point.