You mention constructing a new second story to accommodate the JADU – only 150 square feet of new construction is allowed to facilitate ingress and egress for JADU conversions.

I believe renovate and the other major PACE loan providers are willing to take 2nd position or release the lien to facilitate the transaction. https://www.urban.org/sites/default/files/publication/82756/2000865-FHA-Clarifies-Financing-on-Properties-with-PACE-Loans.pdf

Just the other day I made an offer via a text message between the seller and myself.Once I figure out that the seller and I are in the same ballpark and the deal is likely to happen then I reach out to my realtor and ask her to facilitate the transaction.

I can't do all the sifting through deals, checking out properties, and facilitating the transaction.

Any advice of lenders who will facilitate?

I hope you take the time to reassess and regroup, the malpractice liability risk you’re engaging in can’t be overstated (I assume, as it appears this is a "strategy" you regularly advise on and facilitate).

I currently have a realtor (friend) helping me out on making the best decision and at the very least would be used as a facilitator to take care of any paperwork.

If you make any money on real estate by brokering or somehow facilitating a deal, its possible your breaking NV law and the NV Real Estate Division will file charges in state court. 

Acting as a finder to facilitate the purchase, sale or exchange of real estate; and [PL 1987, c. 395, Pt.

Have you tried finding lenders that'll facilitate a cash out refi for you?