Granted after a refi it was not good cash flow but I had just extracted a large amount of money tax deferred and the way the rules are today it is possible that extracted money will never be taxed (1031, step up basis at death).

Prudent financial planning suggests setting a threshold ROE as a goal.When your ROE drops below your threshold, it signals the time to extract “trapped” equity and place it into another investment with a higher return.

Quote from @Shlomo Rozen: I don't have cash on hand for a deal but I do have at least $100k of equity available in my primary residence that I could extract as a HELOC.

I want to correct that this extraction of vale would be tax deferred and not tax free.  

However if I do a BRRRR I can achieve infinite return by extracting all of my investment.

It was almost free money (I recognize residential RE is not passive and takes work and skill to properly manage the asset, but minimum of $2700/month to manage an asset is pretty sweet).Today, it is challenging to find rehabs in high appreciation markets that you can come close to extracting all the capital on the refi.  

I would put my cash flow against any residential (<5 units) against anywhere if we were using purchase cost versus realistic estimate of expenses (note this would be as though I had not extracted any value, in reality my cash flow is modest because I have extracted value regularly).How would my cash flow be so great?

I could extract some of the trapped equity, but I would 1) be paying double the interest rate I have 2) would be very large negative.   

Quote from @Ej Rojas: AI is great for a lot of things besides correcting grammar.For example, I have an agent that extract data from a website, then another agents cleans the data, then AI does an analysis of the collected data and provides insight, steps, or actions.I use tools like Zapier, Claude, and OpenAI.

Side note you want to execute your plan to ensure you minimize the amount of months that you are paying back funds then move to a refi option if your purchasing or renovating to extract more cash then lower risk exposure with caring unlocked rates in a short timeframe.