As long as you have identified the correct area, you will be fine.

Now, it cant be sold for real value as long as that tenant is still in.

And as long as you continue to own that property you'll never have to pay the tax. 

I couldn't imagine why a residential or a commercial lease would not work, as long as all of the requirements for both parties are satisfied.The residential lease may be simpler, but it may not cover everything you need.

So as long as the water lines enter the parcel on their side of the lot line, then there is no physical encroachment onto your lot.

They will just bump the purchase price by the amount needed to cover them and so long as the appraisal comes in high enough, you are good to go on that aspect.If you don't have a VA eligibility, then the next best loan for a 1-4 unit is an FHA loan.

Again, not a problem as long as a longer term hold is part of your investment objective.  

You can't get around the financing contingency and that is usually not THE problem, as long as you are convnetional and not FHA.15k inspection limit does not make much sense, might as well drop your inspection contingency.

The the sellers can properly make an educated decision, but then how many people would want to buy a house where the foundation is end of life and to fix it is a 20k expense.The void wall is not that big of a deal as long as the home can properly cool or heat, which I believe just roof insulation and the right tonnage will accomplish. 

As long as you're reaching out to people with the information they want, and you have consent to message them - a mass texting service can be a very powerful communication tool for delivering reminders, notifications, and alerts.