-Another option is to transition your purchases into an LLC (if you haven't already), and get commercial loans from the "private banking" lenders. 

Chances are you will get a lot of different advice in this thread from LLC's are BS to you need LLC's. 

I have the two properties under one LLC per my tax advisor's direction.

I have a single family rental held in a partnership LLC that my partner and I plan to 1031 into a 4 unit.

Hi there,I am a single mom and have acquired 5 properties now over the past few years.I was able to get a refi on my first one 6 months ago to get the down payment for the next 4 along with a 401k loan.They are all cash flowing and two are under an LLC I created but I was wondering how I can buy more?

Usually you only need an architect's seal if its an investment property, i.e. non-owner occupied, or if you own it via a LLC. 

Meaning: should I create and LLC for myself and bring the equity that way, or should I create an LLC with the partners and create an ownership structure of the LLC proportionate to each individual’s investment?

Don't know if there are any of you out there but we are looking to connect with a lawyer and accountant in PA to gain some knowledge in starting our LLC in PA for beginning our BRRRR portfolio! 

We have heard that an LLC might be better for buying properties like fourplexes but can't understand why.

I recently got an owner occupied duplex with 3% down with a rate of 3.75%, on the flip side I obtained a refi washout for an investment property in an llc for 5.5%.