Other properties in my portfolio are not as great as this one, but still at least $1k/mo cash flow per building after expenses.

John yes right now I think the fringe areas are at a peak for appreciation and yes we would all look like geniuses if we bought our portfolios in 2011-2012.  

Some small bank portfolio lenders might do sooner.

I take 6-7% all day long in my situation (portfolio-type loans)...and like you, I have stellar credit.

Does this mean growing your portfolio is the only way for increased cash flow?

@Michael CarbonareMy brother and i are new to investing and are looking for ways to build our portfolio.

This way you can build your portfolio over time.I agree with @Cameron McCown about buying in good neighborhoods.  

By doing this, you will get the best rates and terms.2) Refinance the loan with a Non-QM or portfolio lender.

Investment Info:

Single-family residence buy & hold investment.

SFH investment. Hold for approx 5-8 years

What made you interested in investing in this type of deal?
Location and is in-line ...

I plan on doing this by growing a large portfolio as quickly as possible while being careful not to over-leverage myself.In order to grow my portfolio as quickly as possible without over-extending my debt, I will create equity through value add opportunities.