Since computers were introduced in architectural design as a valuable tool, there was a growing need to develop tools that would support the designer from the initial phase of the design till the detailing. In a computer aided architectural design environment it is feasible to stimulate the spatial design ideas and create alternatives in an efficient way. Pattern Grammar approach is one of the design alternatives where patterns, based on complex spatial geometry, are used as an underlayer for a design. In this research, the wavelets techniques are used as pattern grammar and applied to spatial information processing for the generation and analysis of the architectural patterns as well as for supporting decision-makings in structural realisations.Computer ScienceArchitectur