I have been investing in Single Family and am now looking for multi-family 10-30 units.

If it's a single family home in San Francisco, with someone who has been living there for 15+ years (single women, likely in her 60s who happens to be a realtor and knows a lot about real estate law, etc.), would you take the risk to buy it with under market price (knowing that the existing tenant can live there for another 20+ years?)

Then, we got the Woke, Bleeding Heart Judges and with a letter of hardship at Mediation the Deadbeat, Single Mother with kids and Older ones on Fixed Incomes could get another 90 days to stay for free.

It is much appreciated. co-sign what  Account Closed and@Bo BondIf you finance a property as an investment, the lender will insist on that type of coverage to close.  

Some takeaways from him:Treasury Regulations section 1.280A-2(i)(3) gives a couple of ways you can proportion the rental portion of a property--my accountant used square footage.Under section 280A of the tax code, common areas that you also use are considered part of your personal space and unfortunately aren’t counted as part of the rental space in the proportion calculation.

Deals don't make sense unless you do something crazy like put 8 students in a single family :) 

Talk to an accountant about de Minimis Safe Harbor and Safe Harbors for Small Taxpayers.

Renting by the room allows you to maximize the rental capacity, especially for Single family.

For extra formality, put it on a nice document with your letterhead.Re: Non-Binding Letter of Intent to Purchase Real Property Located at [Property Address]Dear [Recipient's Name]:This non-binding Letter of Intent ("LOI") is submitted by [Your Name] (the "Buyer") to [Recipient's Name] (the "Seller") with the intention of setting forth certain preliminary terms and conditions for the proposed acquisition of the real property located at [Property Address], inclusive of all improvements, appurtenances, and fixtures thereon (the "Property").Purchase PriceThe Buyer hereby proposes to purchase the Property for a total consideration of $[Amount] (the "Purchase Price"), which shall be subject to adjustment based on the results of the due diligence investigations and final negotiations.Earnest Money DepositContingent upon the execution of a definitive Purchase and Sale Agreement (the "PSA"), the Buyer shall deposit earnest money in the amount of $[Amount] (the "Earnest Money") into an escrow account designated by the mutual agreement of the parties.

Make sure you have seen every single property BEFORE you bid.