For a non-emergency Service or Maintenance Request, please fill out the form below, and one of our representatives will reply during regular business hours.

Phone: 619-443-4971 Fax: 619-443-9741

If you have an emergency please dial 911.


Office hours – 9 a.m. until 4 p.m. Monday through Thursday and 9 a.m. until 2 p.m. on Friday.

744 N. Second Street El Cajon, CA 92021

Phone: 619-443-4971

Email: keystone@keystoneinland.com

In case of an emergency that poses significant harm to individuals or property, please call 911. In the case of after hours emergencies that require our immediate attention (such as a fires or floods), please call our number listed above, leave a message, and dial 619-390-2370.