A good leasing agent is worth their weight in gold to reduce vacancy and avoid problem tenants. 

@Mitch Schoenman I believe this is called "Daisy Chaining." 

I'm going to quote names instead of books so that you can also search them on youtube for interviews and podcasts:  Gary KellerRobert KiyosakiPeter ThielNaval Ravikanth (mostly general wealth-building advice but he drops gold every time he opens his mouth)

His contacts alone are worth a truck full of gold.

I have an uncle who has over 35 years of carpentry experience and an uncle who has over 10 years of residential general contracting experience (currently lives in Florida, though).I have a Bachelor’s degree in Business Administration with a concentration in Project Management and I graduated in the top 10% of my class.I have 7+ years of business management/finance experience working in supply chain roles.I decided last summer that I wanted to learn about flipping houses.

In order to mine the gold out of the deal you may have to deal with the owners lenders or other municipal headaches.

@Ava Miller you mean you don't want to pay 20-30k over asking when asking is already 30k higher than it should be because people in Charlotte think their homes are made of gold?

I updated the kitchen from original 1980's stained wood cabinates and laminent counter tops by reconditioning the cabinates (painting the uppers white with crown moulding, slate for lowers, and installing gold hardware), hand-pouring a white with black marble-type epoxy over the existing counter tops, installing white subway tile with black grout, and removing a large section of cabinates and replacing them with floating shelves.We insulated and heated the former 3-seasons room and converted i What was the outcome?

I updated the kitchen from original 1980's stained wood cabinets and laminate countertops by reconditioning the cabinets (white, slate, and gold), hand-pouring a white with black marble-type epoxy over the existing countertops, installing white subway tile with black grout, and removing a large section of cabinets and replacing them with floating shelves.I also added a 250 sq. ft. bedroom by heating and insulating the three-season room/office.What was the outcome?

I bought their last March and it's been a nightmare almost everything down there needs to be repaired in all places you buy out there and there's no one that does the work and if they do they're so overpriced you would think you would be having it built in gold