Well that's the way to do it.
I used to hang out with a bunch of real estate investor-types, coffee at least once a week. I was trying to get rich quick (of course) - most of them had been doing it awhile. This one guy would often tout his system of owning, repairing and renting out medium-sized homes. I think he had paid off all mortgages and used income to buy other homes. I often thought that maybe I was doing it wrong. In retrospect, I absolutely was. This guy is probably much better off now than most in that group.
that's sort of what i did. i bought a lot of cheap houses that were not financeable, which prevented the average buyer from buying them. i would make low ball offers to the sellers, typically 20-40% under their listing price, and go all cash, as-is, no repairs, quick close.
i would then do any repairs needed, new roofs, bathrooms, paint, windows, doors, floor coverings, plumbing, electric, landscape, cleanup, whatever needed to get them rent ready in a hurry.
then repeat...frequently. i bought & remodeled 9 in one year, my busiest year.
after doing the repairs they are able to be conventionally financed (if i ever wanted to sell any) which raises the value quite a bit. my equity is up over 1m in the last 2 years due to sharp increases in home prices.
rents are also way up due to a housing shortage in our area.
vacancy is very low, 2-3%