If the unit has been inspected for lead but not deleaded, you also cannot do any construction or remodeling in the unit.

I don't use licensed roofers for my new builds, that said they operate under my license and I inspect 100% of the roof.i don't blame you, roof companies near me charge $165 per square labor only and my unlicensed guys charge $45.

Example: Asking for additional discount on property after the inspection of the property.

Someone can probably give you a more detailed answered but my simple mind says if looks like a good deal lock up the contract with an inspection clause and then get your title company to look into the covenant and give you all the details and implications. 

Condition can only be done by inspection, which involves a septic pro pumping out the tank (in order to look).  

Some cities in Michigan require a rental inspection/certificate.

Rent was cheaper, we required photos and inspections at various intervals and we also listed out in the lease agreement a work schedule. 

Grooming also plays a role as well as keeping up with the property and performing inspections.

In the pre-move out inspection, I found the bottom part of the master bathroom door is badly rotten (water damage) and the paint there got bubbly.

I have 5 students who's lease expired and they all moved out, upon inspection inside my rental home, I found damages, took photos of it. hired some contractors from thumbtack app and facebook locally to fix some major wall scuffing, repainting  and many more issues.