BRRRR In Expensive Markets like San Francisco

I am a new member eager to learn what strategies work in my market. I just watched the youtube video explaining the BRRRR calculator and how it helps to analyze deals. My question is does the BRRRR method scale to an area like San Francisco? single family homes are close to .75-1 million dollars. Does that change the ability to get hard money loans? Does the high rent make up for the high purchase price? Thanks in advance. Also any additional blog posts or other resources would be welcome.