I would offer 90% of the market value. if he sells it you with no agents he is saving 6%~ on real estate agent commission and the other 4% is a convenience fee in that he dos not have to endure showings etc. and you will get better pricing on a non-owner occupied property if you put down 25% is compared to 20%.  

If there are 8 months left, not much you can do in the short term.An investor can buy the deal, and wait until the lease expires, and send a non renew.You can always offer one of the residents an incentive to leave, such as cash so you can have a vacant unitGino

Team - We plan to 'BUILD' an ADU in our backyard needed to know if there are any "Non-Traditional ADU financing options" out there?

The main thing with a non-local lender is they might not fully understand the specific market dynamics of your area, which can sometimes affect appraisals or timelines.However, they might be able to provide lower rates or better terms than local lenders so it is worth looking into.

As a new investor you cannot be a master, an expert of every investing strategy you’ve looked at through hours of YouTube videos, Instagram and TikTok nonsense.

.: Quote from @Barry Clay: Relative beginner here, I put an offer on a 2nd lien for 14K non performing note in Florida.

They don't know, don't look to know, or use reason, to figure out that a good LEGIT Contractor has worked there way UP the supply chain over the years, has NON-public supplier account's, NON-public volume based pricing, NON-public manufacturer direct supply and pricing, all at SIGNIFICANT discount vs big-box store. 

Late-paying tenants eventually turn into non-paying tenants.

It seems safe to say the properties with lengthy periods of tax non-payment are most likely to be houses the high bidder could foreclose upon.  

Rates in town of a 10x10 at the newest facility are 109 and a 10x15 at 129 (non-CC with none available, although they do have some CC).