The housing market in Phoenix continues to go up. Based on a long history of boom and bust there, this will end badly. I sold two Tempe houses for top dollar after renovating them over the last two years and don't regret it. I may sell one more and pay off two remaining mortgages with the proceeds.
To get a good price for your house, you will likely need to do paint and carpet, fix anything that isn't in perfect working order, and your roof and A/C will need to be in good shape. You might have to take a vacation out there to get the house sale ready.
Your rent is also significantly below market. You should be getting closer to $1,400. Not the greatest return on current market value, but one percent of your purchase price. Because you rented it to friends below market to have the house available when you wanted it and did not really buy it as a rental (the pool makes it less desirable to hold as a rental), I would consider selling.
PM me and we can talk comps.,,