Harbor Island is a man-made peninsula created in 1961 from harbor dredgings, located in San Diego Bay in San Diego, California.
It is 2 miles (3.2 km) long and only a few hundred feet wide.
It is under the control of the Port of San Diego, which owns all the land and provides municipal services such as police, road maintenance, etc.
Harbor Island businesses lease their location from the Port.
[2] Under California law, property on Harbor Island cannot be sold and permanent residences cannot be built there, because the area falls under the law governing public tidelands.