The pandemic shut down my interior deign business (which was part of a co op for designers) in mid March.  I will have moved my business into my home in Concord as of June 30.  Even if things "open up" again I would not move my business back to Walnut Creek.  The business license in WC (for my having only my own  computer and one printer in a rented space) I paid nearly $400 per year.  In Concord having my business in my home and owning everything in the office space I'm paying under $100 per year.  Where I was located did have some onsite free parking - but, the parking meters on streets and in parking garages has discouraged a lot of people from doing business in WC.