@Luke Rusten have personally used a higher price to get sellers to accept my seller financing proposals many times in the past!

We've been doing it this way in the construction industry for decades.Best way for you to know what's it gonna cost for your projects is get estimates/proposals from licensed contractors.

Also be mindful of existing or proposed restrictions - I don't recall anything extreme proposed in Ludlow or Dover, but Wilmington is being very aggressive in all but eliminating STRs.

(410 ILCS 82/) Smoke Free Illinois Act. https://www.ilga.gov/legislation/ilcs/ilcs3.asp?

or is there never any such thing as a sincere policy proposal?

No one had heard of them until the new legislation came out and everyone else said they wouldnt close these transactions. 

Most who propose this arrangement do so believing they are adding a layer of protection or separation between the property or themselves and the operation but that's total nonsense as well.

That is not what I'm proposing here.The certification isn't an endorsement of the investment.

In the H.R. 3936, Built in America Act, it was proposed to extend the 100% bonus depreciation until January 1, 2027.

However, that won't work for several reasons:  1) The lender is not going to finance the $15k assignment fee2) The lender isn't going to consider the purchase price in this example to be $150k, they would typically use the $135k price in the original contract, and 3) In this particular example they may not even use the $135k price because it's not an arms-length transaction since it ultimately boils down to a deal between you and your father.I applaud you for trying to be creative, but ultimately what you're proposing isn't going to work and it's going to make the transaction a lot more complicated than it needs to be.