The function of architecture is to humanize the urban environment and create an identity of place that informs, provokes, and speaks to the human spirit. Designing an interior space is about turning our vision into reality. Each place can tell you a story about the person who lives there in collaboration with the designer's unique design. My design philosophy is to create artistic and functional design solutions with equal reflection on human health, well-being and the surrounding natural environment. Due to the population's increase and aging of the baby boomers and physically challenged people, the issue of maintaining independence and freedom has become one of the most critical design issues. The Harmonious Community Project is a research project in the area of architecture and interior design to design a senior citizen housing. This project proposes design solutions to meet the challenges and changing needs of senior citizens through studying sustainability and accessibility. Therefore, simplicity and efficiency have been considered in addition to distinctive design in creating a unique, welcoming community. The thesis research explores physical, psychological and social difficulties through creative problem solving. In addition, it includes solutions that maximize adaptability and efficiency. The reason I selected issues of sustainability and accessibility is that both promote equity and quality of life. Also they extend environmental stability, and can reduce personal mental and physical anxiety. The exhibition of my thesis project was held at Flor Y Canto Gallery in the Art Building at San Diego State University, April 19th-26th in 2013.