I work in the SF Financial District and one rarely sees T-shirt paired with a blazer. Lots of T-shirts (company-branded or otherwise) and jeans, occasional blaz

I work in the SF Financial District and one rarely sees T-shirt paired with a blazer. Lots of T-shirts (company-branded or otherwise) and jeans, occasional blazers with open collar dress shirt, more frequent outdoor jackets (e.g. North Face) with dress or T-shirt, or no jacket at all. Dress slacks are rare among anyone not in the SVP Or C-suite. (All this is me going from memory so undoubtedly if unintentionally inaccurate to some degree.)