To be safe, anyone indicated in any will as receiving an interest in the property, any surviving spouse and anyone receiving an interest under the intestacy laws (if there is no will) should be considered an owner.In any case, the personal representative must give notice of the sale to all affected parties.

If I domiciled here (I dont), I would buy a distressed single family, fix it up, and sell it tax free in a couple years, rinse-repeat.

Which one of you is repeatedly posting bandit signs on telephone poles all over our Columbus neighborhoods?

The repairs may or may not affect the appraisal value.  

Credit scoring has become more of a factor in recent years that affect rates as well.

Higher payments will impact your debt-to-income ratio but only you can determine how much as we do not know your income/debt details.Overall I would say doing a refi should not affect your REI plans drastically.

Do shootings affect the resale?  

I ran a couple grand over budget on my foundation and putting in the 8 footers would put me back on budget, but with what affect on the selling price!?!

If so, be mindful that it may be more than the basement that's affected.  

In time, you could find more investors and repeat this process.