Sustainable mobile home units offer opportunities to promote environmental conservation and sustainable development and sustainable tourism, also the quality of life involves maintaining the natural environment. The concept of sustainable tourism development has become almost universally accepted as a desirable and politically appropriate approach to tourism development. Saudi Arabia’s recent decision to welcome select groups of travelers to the Kingdom affords a thrilling opportunity to those seeking a truly unique travel adventure. In an age of eco-tourism mobile home units have become one of the main means of transportation in the seasons of camping, internal travel, and going out to the land and the beach, as they meet all the basic needs of the owners. The problem of the study lies in not available of sustainable mobile homes dedicated to serving domestic tourism in Saudi Arabia due to a lack of cultural awareness about sustainable tourism transportation and its importance. This study aimed to raise the knowledge level attitude toward sustainable development through sustainability mobile homes units. And to reveal the reality of the views of the beneficiaries of Saudi society about mobile home units and their use in spending holidays and wilderness travel trips. The researcher used the descriptive analytical method to study and analyze the opinions, needs, and suggestions of beneficiaries and respondents on the electronic questionnaire. The researcher used a five-point Likert scale to measure the responses to the questionnaire items and reached several conclusions, including that the interior design of the mobile home unit has an effective role in achieving the efficiency of the aesthetic and functional side of the unit, the necessary of achievement of sustainable interior design principles in the mobile home unit to reach the quality of the internal and external environment of mobile home units.