"The rent I get almost covers the mortgage + property taxes." You are lucky to have bought a house that can benefit from high renting prospective. This is not

"The rent I get almost covers the mortgage + property taxes." You are lucky to have bought a house that can benefit from high renting prospective. This is not the case everywhere and whereas taxes might go up (whenever the authorities will want more money), the rental profits simply might not. It's not a scenario easy to accept - renters usually have the flexibility to move to other cheaper places or to group together (shrinking the rental market BTW), but the house-owning costs are there to stay. Also, the worst case is when the entire area enters in decline, housing costs plunge and render the entire multiple-house ownership a bad investment.