I found a potential property near by for a ridiculously low price that I would like to attempt a flip on but read that the property has some foundation / settling issues.

If the rental is a residential unit, then you need to treat it as such whether he's living there or not.If the rental is a storage unit, then it would fall under different laws.What @Aaron Mazzrillo said makes sense.Everything's negotiable.

I do them for one low fixed price.

Lastly, if I crunch my numbers above and it tells me my offer on the house wont land it, I like to revisit them, and see what/where I am missing costs (too high or too low).

Would love for this property to pay its own way, and I'm thinking low cost membership may work with work from home people.  

We have great, low maintenance tenants, who we believe would likely sign for another year, if we don't decide to sell the property.  

Seems like a good low money down strategy that i may be able to take advantage of.Thanks for you reply and your time.Tom

You will want to do some research here and make sure that you are comfortable with the (albeit very low) risk of triggering the DOS clause that is in most mortgages. 

There's a high demand for a low inventory of single family fixers.  

Having said that, being that busy means higher commissioned sales are probably higher priority and submitting ridiculous low ball offers could be a negative on them considering experience.