You need to carry a special type of health insurance, not the traditional kind.

Tenants can be frustrating (to say the least)... and the situations that come along with them - from stopped up toilets to evictions, among many others, present challenges.I wouldn't recommend a Heloc for a long term hold as the rate is variable... and over 4 units you will require a commercial loan if going the traditional route of financing.  

They can separate themselves from traditional real estate investors by building a robust EIN Corporate Credit ("Ever-Increasing") investment infrastructure that allows for faster portfolio expansion and more sophisticated financial maneuvering.

The more traditional way, assuming you actually have adequate equity in your rental, is to take out a HELOC on the rental. 

Buying a mobile home to place on your land can be a great way to generate rental income, but like any investment, it comes with pros, cons, and key considerations.On the pro side, mobile homes are typically more affordable than traditional single-family homes, meaning lower upfront costs.

I simply recommended the seller finance structure based on the current market rates to make it easier to sell since he has better rates than can be gained financing traditionally.

serious buyers but also the property may not qualify for traditional financing.

That would be best option as a traditional bank wouldn’t do this I read that I can assume the existing mortgage.

I am very familiar with how to list a traditional, non-furnished house for rent on Zillow.

Investors may like the income on the spreadsheet, but the appraiser for a traditional loan won't care.