Pretty much any regular bank / lender is going to require themselves to be in first position on all the properties... so I don't think a HELOC type solution is going to work across multiple properties with multiple lenders.  

HI, Is opening a LOC on my primary a good option to fund flips or is there a better solution to get the funding?

There are plenty of insurance companies that will do this but mine doesn’t so be sure to check with your insurance company just to be safe.

Quote from @HMS Realty Home Mortgage Solutions: Have you thought about starting out with the first investment of buying your own home? 

Prioritize tackling critical issues and beefing up security to keep your property safe and sound.

It is a tool, has it's place for sure, but a far cry from universal solution. 

Though, it is always better to be "safe than sorry".

So while it's not as ideal as a multifamily property, it does present a solution for those that are in the personal situation where they can. 

There are also a lot of foreign investors looking to park cash since US real estate is considered very safe on a global scale.

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