Don't focus on a "rule of thumb" as a rookie.

I’m curious: are others who house hack buying homes they can just barely afford, or are you sticking closer to the ~30% housing rule and using house hacking income as an added bonus?

@Annie AnsonUnderstanding the STR rules can be overwhelming.

Asking in the correct forum will get a better response.Read the RULES!

I am not able to take equity out of my condo because it is currently on the blacklist due to HOA fixing the roofing and a Fannie Mae rule stating, if more then 50% of the condos in that community are owned by investors, I may not be able to refi.

Weirdly, you may actually be able to get better terms and/or more LTV on the refinance if there is debt on the property as lenders have rules for max cash in hand (max proceeds you get at closing) for cash-out refinances.  

The city wants to tear the property and surrounding properties down Zillow said it’s worth 38000The city offer me 13000.I could use some adviceHard to give advice with limited information, but as a general rule, the longer you wait and the further down the line their project is the more valuable your property will be to them.Zillow (and all automatic online) estimates are very unreliable, so don't base on that.

@Polat CaglayanI've never seen a formula but here is a general rule of thumb for multifamily:The class of an apartment refers to the quality of the building, which can be determined by a number of factors, including age, location, and condition: Class A: These are the highest quality apartments, typically built within the last 15 years.

I don't want to violate any of the self-promotion rules on this thread by specifically linking or name-dropping, but it's from a data analytics platform I am working on specifically built for tracking construction, debt, and ownership activity in the Philadelphia region.I will be posting more detailed insights soon. 

Are there rules about renting it out?