If they can present quality information describing why they need the capital, what the current state of the asset is, how this capital will be used to solidify the asset - then at least I can evaluate the capital call and make a decision to participate or not. 

@Kevin Kite- try working with the present lender on refinance  / extension  terms 

Learn how they work now so when the opportunity presents itself, you're ready and know what is available and how to use them4.

From the AirBnB link above:Home Share Units: Entire primary home listings where the host is not present during the stayLimited Share: Shared/private rooms where the host is present during the stayOwner-Adjacent: A full unit in the same 2-3 unit property where the host also resides

Not to mention you will present yourself far more professionally to prospective business partners, lenders etc. who will be necessary for your growth.The next mistake you appear to be making is equating number of doors to growth.

Since I'm a part-time flipper and work full-time, sometimes I'm can't be fully present when a project starts.

Investors are presenting deals all around the Bay Area as well as out of state deals.

You can get more exceptions (if you know how to present a deal) 2.

When more than 1 lien is present the loans have to be used at purchase in order for them to not be considered a "cash out" loan. 

As for how you present the deal, just give us the facts, where the deal is located, how much you need, what you want to do with it, how you'll be profitable.