As used in this chapter, the following terms shall have the meanings indicated:
All contiguous property of the same ownership.
Includes any swimming or bathing pools or tanks, whether permanently installed, portable, collapsible or otherwise, having either an inside structural depth in excess of 24 inches or a surface area in excess of 120 square feet or capacity in excess of 1,800 gallons, constructed or maintained on any lot by any person for the use of himself or any one or more members of his family or guests of himself or his family.