Join Date: Jun 2017
Location: middle of nowhere
Friends in AZ all have pipe panel fencing so corrals, runs, and arenas can be moved around. However, for rentals, look into having it permanently installed, or it will disappear when your renters move.
A 'mare motel'-style shelter with a roof/shade and a pipe run would be sufficient shelter in a desert climate. A larger turnout area could also be used for riding. A 1-acre parcel is very small for horses... 2.5 acres and up are much more 'doable' in terms of room for shelter, runs, turnout/riding area, plus room for hay/feed/trailer/tack storage. If your parcels are adjoining, it may be possible to make one larger riding arena accessible by use for all properties, as long as it's properly maintained by you.
Make sure your zoning and insurance allows for horses and protects you in case of a lawsuit concerning the horses. I know at one point we considered purchasing a property and adding stalls/fencing/arena and renting it, but the insurance quotes once we went from rural property to 'horse property' made in unfeasible for us.