My dad and his friend had some rental properties for awhile... it did bring in extra money, but be prepared for people that skip out on rent, damage property, people calling all hours for repair issues, potential meth manufacturing (houses with meth absorb into the walls which results in condeming the property) etc... if that doesnt concern you go for it! I wouldn't reccommend partner(s) unless you really can split the work & money (good for damaging relationships)