While I do maintain a relatively modest percentage of my assets in money market instruments, corporate debt funds, and high dividend stocks, I remain most comfortable with the investments I specialize in and know best.  

This eliminates the problem of increasing your debt and damaging your credit score.

If you want to play a passive role, a real estate syndication or debt fund could be a great way to go.

@Daniel Tanasa   Unfortunately that is not correct when it comes to mortgage debt.

I calculate the returns on the entire investment, since your debt applies to the entire investment.

I am new to biggerpockets.com so forgive me if this has been discussed already but, does the brrrr method work when working multifamily and if so can someone send me a case study or what the difference is 

You can lend at higher rates or look for debt funds that are taxed differently.

I can buy a 2-4 unit with 20% down vs conventional can only buy a 2-4 INVESTMENT property with 25% down 4. there are options where DSCR loans dont repot to personal credit, helps in not having to show a bunch of paperwork or not one person in a partnership has to carry the debt5. way less paperwork to close on this loan type vs a conventional loan. we care about the income of the property you're buying and it's ability to service the debt of the property whether we use long term rents income, lease income, or air dna/bnb income.6. easily buy in partnerships, add people to your operating agreement, its as easy as that so bring partners into a deal. helps with scaling and raising capital or getting partners involved7. gift funds allowed to close on these as well, and like I said earlier, there's only a 10day seasoning period of funds with some lenders so that means you can literally have a private money lender deposit money into your account 11 days before closing, and you can use those funds to close!

I literally laughed through the phone at his suggestion, because I was broke, in debt, and in every way and unqualified borrower, and the lending environment in 2012 was probably stricter than it had been since the invention of the 30yr mortgage.

We already paid them a pretty sizeable entry fee ($30k) to cover some of their equity and debt in another project.