How can I find out the property manager for a building like this?

The only in I have is that my dogs vet is in there. It’s all just a bunch of random businesses, I think a bank is in there. I’d really like to do this place, possibly even pressure wash. But I have no idea who to give a bid to or how to get a name or phone number. Should I be looking for the property manager or go a different route? Should ask the vet if they know the property manager? I’ve been coming here for about a year and it doesn’t look like they have anyone.

Sure, ask the vet or anyone else in the building… Should be able to find out online too.