Since 1958, Fillner Construction Inc. has been specializing in service station construction and development. Based in Rocklin, Calif., the firm performs commercial fuel systems design and installation. Fillner Construction Inc. demolishes fuel systems and structures as well as renders site improvement services for new developments. In addition, the firm upgrades existing systems as well as replaces new components with obsolete components, such as fuel dispensers, vapor recovery systems and fuel piping. It caters to oil companies, government agencies and military sectors.