Old roofs and HVAC, for instance. 

You could be leaving money on the table in those instances. 

I downloaded the Purchase agreement and found all instances of the word 'assign' or 'assignable' and don't see anything that would prevent me from assigning to LLC at closing.  

@Adam Butt Ironically, I think there are instances in which seeing an investment property in person could actually cloud one's judgement. 

For instance, if you pay for the bills of LLC #1 out of LLC #2's bank account, they have been contaminated and it opens you a lawyer arguing they are the same company and the assets should be fair game as you operated them as a single entity swapping funds between each.   

For instance, a friend in a similar position as yours, secured seller-financing on a 3 unit building in Houston a year ago.

For instance, my goal might be to to buy small multi-family at a discount from the market.

For instance, school districts may not matter as much?

For this instance, look into Nevada and Wyoming to set up your LLC's as they have the best laws for Single Member LLC's.

I want to be good to these folks, but I don't want to risk losing everything I've worked for because they used a hack to get at the natural gas, for instance.