Building

***IMPORTANT NOTICE*** 

Due to the unprecedented COVID-19 situation the Building Department has updated our processes until further notice.

Please call or email the Building Department BEFORE coming into City Hall at building@unioncity.org or (510) 675-5313. We may be able to assist you over the phone or through email and can provide guidance to ensure you are prepared if you need to visit City Hall.

NEW CITY HALL HOURS (BY APPOINTMENT ONLY) : 

Monday – Thursday 9:00am to 2:00pm
Fridays – CLOSED

General Information

Adopted Codes & General Design Information

The Building Division adheres to the following standards:

  • Volumes 1 and 2 of the 2016 California Building, Residential, Electrical, Mechanical, Plumbing, Energy, Fire and, Green Building Standards Codes
  • 1997 California Codes - Administrative, Uniform Code for Abatement of Dangerous Buildings, Uniform Housing, and Uniform Security Codes.
  • Basic Wind Speed - 85 mph
  • Building Exposure - B
  • Climate Zone - 3
  • Rainfall - 1.5 inch/hour
  • Seismic Site Class - D
  • Soil Bearing Value - 1500 (presumptive)
  • Soils Hazard Zones - East of Mission and West of Union City Boulevard
  • Wildland Urban Interface Zone - East of Mission Boulevard

Other Important Phone Numbers

  • Building and Residential Fire Sprinkler Inspection Hotline: 510-487-0711
  • Commercial Fire Alarm, Ansul System and Commercial Fire Sprinkler Inspections: 510-675-5470
  • Construction and Demolition Debris Recycling Requirements 510-675-5466