<prompt> Human: Im considering buying a house from a trustworthy friend. Its outside of my means but they have a basement which operates as a stand alone apartment that they rent out using Airbnb. As a first time buyer I would love some advice on whether or not to pull the trigger on this.Details:1. I am single and make 41k before taxes.2. They are selling for 250k.3. They have been able to consistently make 1500-2100mo using airbnb and have never had an issue filling the space. They are also willing to leave the basement they rent out fully furnished.4. Im able to make a 20 downpayment with a small loan from my parents.5. The house is in pretty good condition and is in a great location. There is some rot on the windows outside and the back porch needs to be redone among a few other small things. Im estimating 20-25k for all repairs.6. The current plan is to take out a loan for the houserepair cost.This situation seems like something I should capitalize on but Im concerned about relying on Airbnb in order to pay the mortgage. As I said before, I trust the sellers and they have plenty of other options to sell if I dont buy and have no reason to lie about their success with Airbnb. If I am on a 15 yr loan Id be paying around 500mo after taxes, insurance, utilities etc. and assuming airbnb is a slam-dunk. If I go the 30 yr route Ill be making a little bit of money each month less than 100. If Airbnb isnt as reliable as I hoped I would not be able to afford the mortgage on my own. Though I can always find room mates and rework my budget to fit the situation.Should I go for this? If so, would you suggest a 15 or 30 yr loan? Any advice would be helpful. Thanks!EDIT: Thanks for the input everyone! I shared a lot of this with pops and were likely going to pass on it.  <response>: Never buy above your means. At some point, it will come back to bite you.I did something similar with roommates. Low and behold, there I was 5 years later, no job and no roommates. Dont rely on unreliable income. 