<prompt> Human: Background: Im 31, make 100kyear, with no major debts and a v. high savings rate currently. My father, 65, is on a fixed income - social security disability, and continuously struggles to stick to a budget. Hell over spend one month, struggles to pay off his credit cards, and then falls into a cycle of not being able to pay everything off, interest being charged, balance increases, etc. I sometimes step in and lend give him money to where hes back above water. I dont really feel like this is super sustainable, or at least I really dislike giving him handouts not looking for broader relationship advice here, and so Im thinking about purchasing a house for him to live in. A decent house in his area could be 100k-150k, and I could pretty easily afford a mortgage on that house. I live in a very high COL area and hes in a pretty low COL area. Anyway, I figure he could pay me rent equal to the mortgage payment, which would be as much or lower than hes currently paying to rent an apartment, with two distinct benefits 1 unlike his apartment rent, I can keep the rent steady and not increase it with inflationon a whim and 2 in the event of him needing funds, I can just not collect rent that month rather than giving him cash. I see this ultimately playing out as me owning the asset, with him having a secure living situation, win-win? I recognize that there are a lot of additional variables here, rental agreements and insurance, maintenance and upkeep of the house, etc. Ultimately Im willing to eat a lot of that cost, since this is a way for me to gain the asset of the house while in most months having the mortgage payment covered by him. Im primarily interested in a sanity check here - are there pitfalls to an idea like this that Im not thinking of? Assuming all else equal I could afford the mortgage payment myself indefinitely anyway, does this seem like a potential solution to a few problems at once?  <response>: Make sure that you can pay the mortgage with a smile every month for the next 30 years without any money from him. 