I have not had an issue until this week on Airbnb and I'm going to use the Wynd data as evidence since there was no physical evidence so we will see.

I’d look into historic appreciation data for the area before making a decision.

Join NARPM, that's also a great resource.The systems to get to a decent portfolio are not complex, especially with today's software.

Cons: Violates FHA terms (due-on-sale clause), risking loan acceleration; makes refinancing and insurance more complex and costly.For now, keeping the FHA-financed property in your name is safest.

Have good data and comps. 

If there are significant developments planned in the area, such as big companies opening, new apartment complexes, hospitals, or malls, it could actually be a brilliant idea to buy properties, even if there’s currently no cash flow.Just something to think about before dismissing it as a poor investment to hold onto.

Out of the 20 letters I've sent, I've had 1 guy get back to me and we were in discussions but weren't able to find a price that worked for the both of us.The issue is that I only have a few houses on my mailing list so far (just places I've walked or driven by that caught my attention), and blindly searching every street and address # to see which houses are actually legal multifamily will take forever and doesn't seem efficient.I know the data is publicly available, I just don't know how to aggregate it in a way that would be efficient and useful for blasting out marketing mailers.Are there any websites that can pull massive lists of all multifamily houses in my area?

After that, I would encourage you to go to your county recorders office / court to request data yourself.

Some tools myself and others have used: - Skip tracing- Mailers- Data aggregators like PropStream, PropertyShark, etc. 

I approached the REO bank that owned the condo complex a year later when they're still stuck with 30 units and got another one for $40K.