The house is now painted, and it's a big improvement. It's amazing what a coat of paint can do.
The flooring can now go in. We're going with a faux wood floor. It's called luxury vinyl flooring. It's waterproof, durable, and reasonably priced. Looks like real wood too.
Notably, we added an underlayment- the gold layer shown in the images below. The underlayment gives some additional buffer between the subfloor and the floor, which should help damped thumping when people are walking around upstairs. Prior to installing the underlayment, we walked around the upstairs listening for any squeaking as we walked. Whereever we heard squeaking, we screwed the subfloor into the joists. This, and the underlayment should dramatically dampen the average acoustic impact of day to day living upstairs on the future ADU downstairs.
I'm in the throws of trying to lock down various subcontractos for specialized work related to concrete. It's very hard to find help these days. All contractors seem extremely busy, and generally don't return calls, let alone provide bids.
One concrete company said that they'd look at my job, but don't have any time to do any work till February 2018. That's 6 months from now! No thanks.
I need to cut some trenches in the basement floor to create new drains for the bathroom. I also need to cut up a portion of the driveway, driveway approach, and sidewalk, in order to meet a planning/zoning code standard that requires that the driveway width is reduced to only accomodate one car. Also, the entry to the new ADU must not have parking directly in front of it. So, I must carve out a portion of the concrete driveway, and pour concrete to make it into a designated pedestrian pathway.