When the human rights commission in SF looked into this it was concluded that an increase in single person restrooms designated for use by either sex were the best way to go. So new buildings have to have them, but we did not call for them to be added to existing structures, figuring that a fight between the SF TG community and the major property managers and property owners would not be one we could win. But, we also saw that there was a trend in that direction anyway, in part because of ADA, and in part because of the rise of single parents with children of different genders then themselves. So many places had already turned their single person restrooms into unisex rooms - the good old, first come first serve. And by unisex I don't think anyone means mass bathrooms, but rather these single person rooms. However you can't make all restrooms like that, they do take more room, and more cost than a standard setup. In the same space I can fit 12 stalls and 2 sinks I could only make 3, 4 at the most single person facilities. But retroactive design changes are always VERY EXPENSIVE.
Having the government give out some sort of permit for this, is absurd. First you would have to get that passed, which in this political climate is not happening. Second, I think our government has more important stuff to do right about now then even bother with this, which affects very few people - and at any rate is a local, not national issue.