Communicating with BHA The best way to communicate with BHA staff is via email or telephone. Please click here for our staff names, emails and phone numbers. The general number is 510-981-5470. BHA fax number is 510-981-5480. In this section About BHA About BHA Contact Communicating with BHA MOUs Document Drop Box Dates and Calendars FAQs Human Resources Policies and Plans News NEWS More News