All my capital is alllocated - what next and how to keep growing?

[Roy Gottesdiener]

I started investing 4 years ago doing BRRRR, right now I have a portfolio of 6 SFH worth around $1.1M with $600k in debt and around $1.5k monthly cash flow. I'm a foreign national so my cash outs are capped at 60-65% LTV so even though I got great deals I still reached a point where my capital is now locked into these rentals. On the one hand, I realize I just need to let time do it's magic and enjoy appreciation and debt paydown, but I'm looking for ways to continually grow my portfolio by either acquiring more properties or finding ways to generate more income which will be used to purchase more properties.

I tried using OPM but that doesn't work for me for several reasons - if I go down a loan route I can't pay it back because of my LTV cap and partnering for equity requires a lot of work in bulding trust and even then it's for a very small share of equity which is insignificant. Then, products such as HELOC or 1031 exchange are not open to me as a foreigner so even though i have on paper $500k in equity I don't have a real way of tapping into it.

Any ideas or suggestions what I can do now to keep growing would be much appreciated!