The amount of equity I call pull is less than the cash I have but not significantly less.When doing this analysis it struck me that it may not be worth using a HELOC for the simple fact that the interest rate is ~9%* while the funds in my high yield account are only yielding ~5%*.

You obviously won't find anything ifor 750/m P/I payment in the area and you won't even find rent for double that amount if you want to keep renting.

I know investing with family can possibly hurt relationships if things don't go well, so I don't want to make any big mistakes since this is a large amount of my parents inheritance. 

The cost to build will be significantly more than the amount of “value add” of an ADU putting you in a negative equity position.

The HUD guidelines suggest a certain rent amount, but after inspections, the figure came back significantly lower than expected.Additionally, do you have any general tips for working within the bureaucracy of the Section 8 program?

His payment jumped up to an amount he couldn’t afford, so he stopped paying.

Real numbers- purchase 907k,rehab , closing costs, soft costs, 840k, all in 1.747 mil, basis for each unit should be roughly 291kappraisal of each unit minimum 400k , so 2.4 mil if for all 6.I might refi only 4 out of 6, that will cover initial loan amount.

Are there a decent amount coming on the market, or is there like 1 a month? 

This relative to my situation, is a super modest amount of funds.

Just for example, if you buy a single family home to flip at $300k and your rehab budget is $70k (which isn’t a ton - very easy to hit that amount) your ARV is definitely going to need to be above $500k to make any profit/make it worth doing at all.