I found a park model home in a nearby RV park that would allow me to move quickly, offered great amenities, and was reasonably priced at $15,000.

I have a certain business model I like to run and my clients follow that model.

everyone i spoke to tells me 2 units and up but with airbnb model does single family investments look better now or is it still best to get 2 plus units

I googled the model number and found the programming instructions.

My Model is not scalable until I stop self performing and start using subs Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

What is your business model? 

@Jack Zhuang most conservative multi family investors underwriting transactions today are building cap rate increases into their financial modeling.

Guy, an interesting read, but I totally disagree that the solution is more government regulation or  oversight of rental properties - unless they are part of section 8 and are therefore offering a service in exchange for income.IMO, the answer to your question of "When would you know....." is more based on personal integrity and ethics than a hard or fast "model". 

That's a good business model.

There are many different rental business models that are VERY different:College rentals "by the room"  Short-term rentals like vacation rentals or corporate rentals marketed to a particular community like traveling nurses,  line guys,  pipeline guys, flight attendants'Community' rentals for artists, old-folks, sober-houses, and care-homes1) Family opinion:Since you do seem to value the opinion of your family, make sure you are aware of the many different ways to make money as a landlord and be prepared to discuss the pros and cons of diiferent business models when the topic comes up.