You need to understand your market, controll your contractors with good contracts, have access to good financing, and know your after repaired value. 

No restrictions so you can double close them.

Is it the MLS (which I heard you need to be a real estate agent to access)?

"The market" (any market) to operate at maximum efficiency requires that all actors have complete access to information.  

So if you get a great deal on a house and post purchase (due to either it being a great deal or the rehab you completed or both) it is worth meaningfully more, you can't access that equity for 12 months.  

Soon (hopefully), it will no longer require the applicants to go through the SmartMove authentication process, and will instead give the landlord instant access to the credit/criminal/eviction report directly within the Buildium platform. 

I can envision a service which offers those screenings reports for a a one time fee and assigns the tenant an access code which can be used by several different landlords over a set period of time (say 90 days), or for a certain number of updated inquiries.  

if you're on a crawl or basement and have easy access to the plumbing, I'd just replace it.  

I have seen others become a hard money lender and lend private money they gain access too, cut the investment performance aspect out of your payday.... make that someone else's responsibility.

You can't restrict watching the grandkids either at certain times unless you qualify as an age restricted, senior living community or such exceptions as a non-profit, religious or the landlord lives on premises.