Human behavior and housing resist every stan-dardization effort. Many aspects such as different technical equipment, furniture, and usage patterns make our surroundings as individual as ourselves. Thus, the personalization of pervasive applications is a fundamental requirement. To enable the development of custom pervasive applications, we propose a soft-ware development process. This process is based on the successful process for modern desktop applica-tions. There, developers create extensible applications and components. Customizers use the resulting arti-facts to develop custom applications. Finally, users configure applications to their individual needs by adjusting predefined settings. To adopt this process for Pervasive Computing, we present a component system for developers, a graphical toolkit for customizers, and self-configuration algorithms to ease the deployment.