Lots of good advice above- I think an active, professional network of pros that know and trust each other is essential.

It would definitely help build trust and rapport with your tenant, but if it's not defined in the lease agreement you aren't on the hook for that. 

I’m not exactly sure how much you can trust much more than the list price.

In the case of a single family home house hack, say a single level ranch with a daylight basement - it lives and functions kind of like an up-down duplex, but the zoning and property type is 1 unit SFR.

Its always best to review your file with an investor friendly mortgage broker like ourselves to see what are your best options in terms of financing your next deal and get a high level understanding on how to enter a property and also exit a property.

Of course in the JV deals I do where we  come into title I pay tax at the state level if there is tax. 

It’s a popular way for new investors to dip their toes into real estate because it allows you to generate rental income while reducing or even eliminating your monthly mortgage payment.While house hacking can be done with single-family homes (by renting out rooms), multifamily properties, such as duplexes, triplexes, and fourplexes, take the concept to the next level.

Focus on building strong business credit through timely payments, low debt levels, and solid financial records, which carry more weight than the name alone in establishing creditworthiness.This post does not create a CPA-Client relationship.

Is it one investor per deal, then they would act as a private lender and that typically includes a note, deed of trust, loan agreement, personal guarantee, assignment of rents and a few other docs.

You could use a floor leveling product but check the square feet to see if the product covers large spaces.