The paper presents issues concerning realization of paradigm of sustainable design in the achitectural design of offices. Special attention is given to relevant technical, formal and functional solutions, being the domain of interior architects creating the built environments of adequate indoor quality with substantial reduction of negative impact on natural environment. Presented sustainable architectural interiors, completed in the last decade, have gained cerificates established by independent scientific institutions, assuring their accordance with exigencies of rating systems. The paper analyzes the formal methods of proper space planning, which assure high indoor environment quality parameters for the end users of office interiors in terms of optimum daylighyting of workstations and recreational areas as well as workers' visual contact with natural valuable surroundings. These requirements can be satisfactorily met by properly shaped inner space elements including partitions, ceilings, space-dividing structures as well as rational and effective use of finishing and building materials. Technical and technological devices incorporated into the inner space mentioned in the paper are supposed to be essential complement of these design methods assuring proper daylight transmission and distribution in workspaces. Discussed examples indicate the necessity of collaboration of interior architects with other professionals and consultants (i.e. green building accredited consultants), whose design contributions should be accepted and respected. Integrated interior design process assured fulfilment of imperatives for sustainable architectural design of interiors.