Knowledge is power. 

I would never allow them any decission making powers regarding my properties.Tenants call me and I make the decisions on who is to be called if anyone.

Nobody can predict if prices will go up or the other houses will affect your selling price but at least you won't be at the mercy of a dishonest contractor with sky-rocketing costs and/or poor workmanship.

The other side is an investment property and you will pay tax on the gain associated with it unless you do a 1031 exchange and defer the tax by using the process and buying another investment property.You can always move out of the one side and use the entire property as investment for a year or so and then sell and 1031 the entire thing.But The really powerful thing is that if you hang on to that property and continue to live there until you qualify for the primary residence exemption you can then sell and take half of the gain tax free and defer the tax on the remaining gain with a 1031.

A different percentage gives them a majority voting power and more interest in distributions and profits later down the line. 

If you max the HELOC, or even borrow against it, it will likely impact your credit score and DTI and thus your purchasing power for a new home.

But there are more expensive, powerful sources such as ESRI, and of course, the MLS is really useful, but you have to be an agent to get access.

Time Value of Money combined with compound interest is a extremely powerful and beautiful thing. 

we have restored power and there’s an outlet on the front patio Incase I need to use the corded beast.

@Mike Williams  It is totally doable to make 4k a month off 100k with the power of compounding.