If I were you I would look for listings that are underperforming where you can come in and make some easy changes that will dramatically increase their booking. 

When a hot water heater is over 10 years old or an HVAC is over 20 years old, the likelihood that it goes out increases dramatically.

Using a standardized email for every applicant, every time, will dramatically reduce your workload and end the confusion.

Right now everything from materials to labor costs are at their peak and they fall dramatically during a recession.

With the environment the way it is, assumptions have dramatically changed over the last six months.Then, I second what others have been saying.

- The seller pays the agents, not the buyer, so enlisting an agent is free to you, and will help dramatically as long as they know the city well.

@Stephen Torti - I've always thought this model was questionable at scale but can see it does work in theory assuming a positively cash flowing property; however I think the risk is a black swan event causing a dramatic drop in values. 

The systems and processes for the three areas you mentioned are dramatically different depending on the asset class or classes you're looking to purchase.The good news is just about every part of the note business can be outsourced, systematized, etc.

Rent growth has been significant and just raising rents can have a dramatic affect on your profitability.

- Again, this is a friendly challenge because this thought process has helped me dramatically in my life.