Seems to me the key variables are: rate, TCV, draw period, origination/application/loan fees.

HELOCs offer equity without refinancing, but have variable interest rates and risk of overleveraging.

So with 1 checking account per building, where do you set aside the funds for all the other variable expenses? 

One of the main downsides of using a HELOC is that it typically comes with a variable interest rate, which means your payments could increase over time if interest rates rise.

Like @Nathan G. said, a lot of variables to determine which is best for you.

While I understand that there are numerous variables in flipping homes, this change in approach really stood out to me. 

You would have to get a relatively short term loan (5 years or variable) to buy the property and fix it up.

Some agents engage in whats called a variable rate commission.

The rate is indeed higher than a conventional loan, and is usually variable.

The more full Doc a loan is typically there is more documents, scrutiny, and ultimately a longer closing time frame where as a private bridge note can fund in 1-2 weeks the full doc rehab loan may take 40-70 days on average depending on a host of variables (your General contractor's documents, the appraisal, scope of work, etc).Its imporant to figure out what you're trying to do, what deal you have in front of you, your capability in terms of all loan products from DTI focused ones, the bridge private ones, your time frame to close (the type of seller you have before you), and execute with the best game plan.Best,@Matthew Kwan@Carlos Valencia