Figured folks might be interested in seeing the more-or-less final elevations. Latest status is the city is reviewing the plans, bidding is going out to contractors:

There's a green wall that spans the front of the 1st floor (most likely a climbing/trailing vine on a wire trellis), and green roof on the roof of the 1st floor. We're pondering even more green wall on the 2nd floor (vines growing out of containers on the 1st floor roof).

There's a balcony off the 2nd-floor master bedroom. The entrance to the backyard will have a few steps down to the backyard, which will be a mixture of pavered/natural landscaping.

We hope to reclaim, strip, and re-use the existing redwood siding from the house, and apply it to the garage and staircase exteriors. The green wall from the front will wrap around to the entrance.