Rural self-built house design with a garage on the first floor typically involves architectural planning that integrates residential living spaces and a parking area within a single level structure. This design often requires consideration of factors such as space optimization, structural stability, and aesthetic appeal. Key elements include layout planning for living areas, kitchen, bathroom, and garage, as well as incorporating appropriate insulation and ventilation systems. It is advisable to consult with a professional architect to ensure compliance with local building codes and safety standards.