It is t QE it is just a matter of their being so much treasury issuance due to tax cuts that liquidity need to be provided as banks lending against treasury hit their limits.

Now if you have significant money and want a better return that US Treasuries or CDs than buying at retail, may work out fine for the long run.

Depends on the initial bank terms...I usually see the first 5 years locked and then it adjusts once a year after that depending on a certain number of basis points over a certain index (libor or treasury).

Mortgage rates used to be 1.70-2% over the 10yr US Treasury, and the idea was that they were assessing the risk premium to a similar duration risk free asset.

Also, I would point out that if you are just getting into real estate, prices are high right now, and other traditional investment paths are starting to ramp up (like savings accounts at 4+ percent; US Treasury IBonds at 6.5+ percent.)  

or is that between the previous owner and the treasury department since they are the one posting default notice? 

In general, commercial loans are priced relative to treasuries (fixed) or relative to SOFR (float).

And with 10 year treasury notes around 3% its less attractive for cash buyers too.

Those fluctuate with the 10-Year Treasury primarily.

After your tax burden you realize you could have invested in a 10 year treasury and done better....2.