If a tenant disappears without formal notice, in both states of our rental properties, we can keep the deposit for any rent owed and any damages.

Once you rent it, you'll have a home that's been rented a few years, so instead of buyers hearing "newly renovated", they'll hear "2-year-old appliances, roof, etc." with the normal wear and tear that comes from that, and you'll have the potential for renter damaging the place as well (although I'm sure you'll be screening well, so not likely a factor).  

Several, like MD, will allow the tenant to sue for 3 x improperly withheld amounts + legal costs if you do not provide list of actual damages and refund, so just make sure you are well aware of your own state's laws.   

Although no major damage was done, it makes me curious if the 10400 sf building will need completely re-wired before I can put anyone into it for my own concerns.  

They caused more damage then I have for the security and did not give me 30 days notice before moving out.

The investor buyer wants the tenant and locks out so they can asses damage to the property and reduce the price to compensate.

The disclosure also makes recommendations to, among other things: seek assistance from a lawyer or the Minnesota Home Ownership Center; procure an appraisal; have the property inspected; and examine title.Where there has been a failure to timely give the statutory disclosure (either at the time of signing the purchase agreement or at least five business days prior to signing the contract for deed where there is no prior purchase agreement), the statute imposes liability on the part of the multiple seller in favor of the purchaser as a private right of action in an amount equal to the greater of actual damages or statutory damages of $2,500, plus reasonable attorney’s fees and costs.

Gabriel Perez If you're concerned about cleanliness/damages you can include quarterly inspections in the contract.

Vacancy rates are much higher and high turn over costs due to damage.

As a realistic matter do you think anybody with standing is going  to see your lease and recognize the portions you recycled and bring action against you for damages?