Mobile Citizen icon

Residents can report concerns simply by taking a photo, providing comments and details about a location then submitting it directly to the Public Works Department using Mobile Citizen.

The Mobile Citizen application is free and can be downloaded in the App Store for iPhone and iPad or the Google Play store for Android smart phones and tablets.

Email address and location (Contra Costa County) is required to register and use the app. Select the service, take a photo, provide information about the issue and details about the location then submit.

Download the FREE App today!

Apple Store

QR Code for App Store

Mobile Citizen QR code - Apple App Store
Google Play Store

QR Code for Google Play

Mobile Citizen QR code - Google Play Store


Go to the App Store to download the app for iPhone and iPad OR go to the Google Play store to download the app for Android smart phones and tablets.  The application requires registration to use, which includes providing an email address and setting Contra Costa County as the location.


Select the service, take a photo, provide comments and details about the location then submit. The submitted request is automatically assigned a unique Work Request number then sent to the appropriate division of Public Works for follow up. Track the status of your request in the the app.

Please note Contra Costa County Public Works jurisdiction is the unincorporated areas of the county.  If you need assistance with your Mobile Citizen account please contact us at (925) 313-2000 or email us.

Business Hours

Monday - Thursday 7:00 a.m. to 5:00 p.m. 

Friday 7:00 a.m. to 4:00 p.m. (note: office is closed between 12:00 p.m. and 1:00 p.m.)

For emergencies after business hours call (925) 646-2441.

List of service choices in the App

  • Drainage
  • Fencing
  • Graffiti
  • Homeless Abatement
  • Illegal Dumping
  • Landscaping & Irrigation
  • Pavement & Potholes
  • Sidewalks
  • Streetlights
  • Traffic Concerns
  • Traffic Signage & Striping
  • Traffic Signals
  • Trees & Vegetation
  • Other

Do I have to pay for the App?

No, this is a free App available to download on Apple and Android products.

What happens after I submit a request?

A unique work request number will be assigned and a confirmation will be sent to the registered email stating the request was received and whether it was approved or denied.

Should I attach photos?

Yes, please attach photos to the request. They will be very helpful to staff addressing the issue.

What type of information should I provide?

Report the location and description of the issue. Make sure to provide as much information as possible such as landmarks, cross streets, etc.

My request was approved, what happens next?

An approval confirmation is sent to the registered email. The email will provide any next steps and contact information if you have any questions.

My request was denied, why and what happens next?

A denied request means it does not fall under County jurisdiction. An explanation will be sent to the registered email providing the information for the correct agency to contact.

How will I know when my request has been completed?

A notification will be sent to the registered email.

Where can I find all the requests I have submitted?

Your requests are listed in the app under the “My Requests” tab. Each request lists the request number, complaint description, status, date and time the request was submitted. If an image was provided it will appear above the request number.

Are we still able to report service issues the old way?

Yes you can still report service issues directly to our department by calling (925) 313-2000 during business hours Monday—Thursday from 7:00 a.m. to 5:00 p.m. or Friday from 7:00 a.m. to 4:00 p.m. (closed 12:00 p.m. to 1:00 p.m.) or email your concerns.

Please Note: For emergencies after hours and holidays call (925) 646-2441.