There are smaller one-off groups as well. 

I know one builder was better than the other. 

If you are one those, the MAIN question in the present thread is not for you.I believe many people in this forum have stopped buying tax lien certificates at auction before 2023.

What’s one thing you’ve learned (the hard way or not) about structuring a loan or partnership that really clicked for you?

You'll want to double them for Class B, then double them again for Class C properties.If you're serious about the 4-plex, you should live in one unit an rent out the other units as STR or MTR, along with any other bedrooms in your unit, to max out cashflow for first 1-2 years. 

It's far too much work for me to deal with potential roommate drama and sign leases with 3 different people. beside with one bathroom, it might be too intimate for strangers to share. 

None of the properties in my portfolio cash-flowed on day one but they all do $500-2,000 per door now.

@Charlotte WilsonIf you will be occupying one of the units, I recommend 5% down conventional rather than FHA.

You live in one room, rent out the others, and pay your expenses with the income.

The one I’ve spoken to says 25% down and I’m looking for lower than that.Hi Abby, I have the best lenders in the game and they have special loan programs that let you do way less than the normal 20% down.