Need a marketing team or call center.

I used a hard money loan to purchase this off market deal.I rehabbed the upper two units within two and a half weeks and have a renter already lined up for one unit.

This year I may see if if I can get a construction loan to build 20-30 apartments, then refinance with an asset based lender. what markets?

I stopped buying because the market became too expensive and competitive in my area at the time. 

There are plenty of older homes on the market that do not have closets.You need 2 egresses (including 1 that goes outside) such as a door or window, size about 70sqft (local codes may differ), ceilings at least 7ft high, and it cannot be a walk-through passage.As always, your local codes may be different.

Fortunately for me, I started investing a time in the market where everything went up.  

No residual marketing and no marketing for each properties uniqueness.

It's real estate in markets with population growth, it's pretty hard to lose money if you get an inspection and appraisal."....Wishful thinking at best when buying C/D properties.

There are a plenty of resources that can provide valuable insights into various strategies for investing in real estate, as well as tips for market analysis and financial planning.