Once you have earned some money and mature a bit you may find that it is also part of the responsibility that comes along with success that may lead you to simply want to help a community maintain or improve its quality and value.

I think a landlord has a responsibility to the try and improve the community in which their rentals are located.

@Jason Dekdebrun Capitalize as you improved the property when the unit was vacant.

These investors almost never look in the mirror and admit that maybe, just maybe, part of the problem lies in their personal inexperience in efficiently dealing with the situation they chose to put themselves in. 

Could you please maybe mention the margin percentage to give us a better idea of the improvement resulting from the in-house marketing?

Obviously, to take advantage of all of these is ideal, however, specifics can help you round out your portfolio to be the most efficient.

I doubt a cost segregation study on 80-100K houses would be a cost efficient endeavor.

Check out Jhomar Home Improvements and Imperial KB.

In terms of improvements on the property, I had a wrought iron gate/fence installed, security cameras, and glass shower doors.

In the backyard is an additional separate efficiency apartment.