Property Information

Our mapping and data website, CommunityView™, provides information on properties, city services, and local features. Enter a street address or an Assessor's Parcel Number (APN) in the search window to locate a particular property and see the following types of information:
  • Aerial Color Photography
  • Bike and Trail Facilities
  • City Boundary
  • Parcel Information
  • Parks
  • Road Map
  • Schools

Search Instructions

  1. Enter the property address (including number) in the space next to "Street/Address:" (ex. 34009 Alvarado-Niles Road)
  2. Zoom to a scale where parcel lines are visible.
  3. Place cursor inside of the parcel and left click.
  4. A "Bubble" will appear with the property address and APN, as well as several links/commands including "Driving Directions," "Photo," "Summary," "Details," and "Clear Selection."


  • Incremental Zoom: Left mouse clicking the "+" or "-" sign
  • Dynamic Zoom: If you have a mouse with a wheel, you can move the wheel forward or backward to quickly zoom in or out
  • Zoom to Rectangle: Press and hold the Ctrl key as you draw a selected area to zoom in


If you cannot access the GIS system and need information about a property, contact Union City at 510-675-5319 or visit City Hall, located at 34009 Alvarado-Niles Road. For department-specific information, use the following phone numbers:
Department Phone Number
Community and Recreation Services
Economic and Community Development
Fire 510-675-5470
Police 510-471-1365
Public Works

Technical Requirements

System Requirements

Internet Connection - minimum DSL
RAM - minimum 512 MB

Supported Operating Systems

Windows: 2000, XP, Vista 2007

System Windows Web Browsers

Internet Explorer versions 7,8, 9
Google Chrome and Firefox

Supported MAC Web Browsers


Terms of Use

Before you can access the following information, you must read and accept the following disclaimer. After reading, please click the Agree button at the bottom of the page. If you accept, the introductory CommunityView™ page will be available to make selections.


The GIS information provided by the City of Union City is a public resource providing a visual display of general information for your convenience. Union City makes no warranty, representation or guaranty as to the content, sequence, accuracy, timeliness or completeness of any of the information provided herein. All information contained herein should be verified directly with the City of Union City before relying on its accuracy. The City of Union City expressly disclaims any representations and warranties, including, without limitation, the implied warranties of merchantability and fitness for a particular purpose.

The City of Union City shall assume no liability for:
  • Any errors, omissions, or inaccuracies in the information provided regardless of how caused; or
  • Any decision made or action taken or not taken by user in reliance upon any information or data furnished hereunder.
Permission to use this application is expressly conditioned upon your unconditional acceptance of and consent to the terms of this disclaimer.

NOTE: If you see any issues loading the Community View please click the Change View icon below and select any option in the dropdown list.