For example, I mention that every adult must pay a $30 application fee, pass my credit/criminal background, make a combined income of 3x the rent, and whether or not the property accepts pets.

Knowledge, experience, clear goals, financing combined with location leads to success.Good luck.

Hello, I started investing in real estate on 2017 and I have 7 properties (1 4plex, and 6 SFH includding my primary residence, ). I have a full time w2 job plus managing all the properties and I am getting good cashfl...

My opinion for what it's worth, Account Closed, is that it's much harder to find a deal now and make the numbers work.I believe there is more "investors" or at least people attempting to invest than ever before - combine that with our current situation of higher than what "most of us" are used to and low inventory = 10X harder to find good deals - in my opinion.Wholesaling being easy is a myth...I know so many people here in Chicago who talk about it, but the number of people doing it at any scale for a length of time is nearly zero....the one guy I know who's been at it longer than most here in Chicago is @Zach Shepard and he's a silent snipper!

I combined owner financing with private money and then refinance with my bank.

The relatively low initial investment combined with Chattanooga’s rising real estate market presented an excellent opportunity for a quick, profitable turnaround.

That's a lot of good leverage.If you like the performance of those properties then any one or combination of the recommendations above might work. 

Are you primarily seeking passive income, capital appreciation or a combination of both?

Flooring: A lighter or mid gray lvp to compliment (~$3 sq ft material) Cabinets: White shaker style (Lowes/Home Depot, Readily Available with little lead time) Countertops: White Quartz with black veining to match black matte finishes if the return on investment is there or just a nicer laminate (calacatta marble natural stone look)Finishes: Black matte for a modern look or the classic brushed nickel.

I've used a combination of Turnkey to BRRRRs and everything in between.