A bank will not give you the $ as you have to show ability to repay the loan. 

I do not have any loans through Flagstar Bank, but I would talk to them prior to moving it into the LLC.

Quote from @Carlos Silva: Has anyone tried velocity banking?  

So far it's the bank with the highest LTV I've found.

For example in many jurisdictions I can STR units in a duplex but cannot STR an ADU (some jurisdictions will let you STR if you owner occupy).

For example in many jurisdictions I can STR units in a duplex but cannot STR an ADU (some jurisdictions will let you STR if you owner occupy).

If it is a larger bank/mortgage broker, you should be fine. 

Just about any bank can open a joint account. 

It is usually difficult to take money against it from the bank, it might not be a 1:1 value add - meaning if you invest 100k into an adu it might not raise your value by 100kThat being said, it can be pretty lucrative especially in expensive and sunny CA - since building lots are no where to be found and existing real estate returns are very poor.My partner builds these units.

If I were to approach a seller of a $200k home, and they had a remaining mortgage of $100k, could I get a new bank financed loan for that $100k, and have the seller finance the remaining $100k of equity to me?