I understand vibration cannot be dampened, but I think voices and music would be dampened by this method. 

This can be really helpful if you're planning to scale up your portfolio or if traditional financing methods don't work due to self-employment or limited traditional income.Bridge Loans – If you're leaning towards flipping a property or doing major renovations, a bridge loan can give you short-term financing to get the property ready for sale or refinance.

It's not the most efficient method, but it works and as you grow with scale you can upgrade systems

I am interested in multi family rentals, single family, and utilizing the BRRR method.

Then determine your method.    

I love the BRRRR method, having scaled my real estate portfolio from just 2 units to 18 in 12 months (From 2 units to 18 Units in 12 Months), and later from 18 to 60 units in the early months of the COVID-19 pandemic (18 to 60 Units During the First 9 Months of the COVID-19 Pandemic).

When you start to feel like you are starving for real estate, you are fodder for everyone out there who wants to wholesale you a dump on seller finance or some other quick method that won't work.Your only job if you want more real estate is to create more capital for yourself and more equity in your current home.

I would focus on flipping to build more capital; however, if the deal allows you to use the BRRRR method then I would refinance into a DSCR loan after the rehab is complete.

Always good to start with the tried and true method to get your feet wet.

Unless you get a crazy steal of a deal...The BRRRR method is great, but not really working in todays market (unless of course you get a homerun of a deal).