Many TV or radio studios have chambers like this, they sometimes use them to produce recordings that sound like they were recorded outside (adding the background noises they desire). Not sure if that's available in the Bay area though.

A high end foley room would probably get you 98% of the way there.

Recording spaces in general are a good (though very incomplete) starting point. My office, where I do a decent amount of AV recording, has about 60% coverage of acoustic foam and standing silently in the dead corner (2" wedge foam from floor to ceiling around a bass trap) makes people visibly uncomfortable.