Horse properties for sale in Maricopa Arizona 85138 & 85139. Maricopa AZ horse real estate can be found in the following communities; Saddleback Farms, Thunderbird Farms and Hidden Valley.   A horse property for sale will most likely contain a septic tank and one of the following; a private well, a shared well or the water will have to be hauled.  Gas might be available or electric, but if not, the property will have a propane tank.