Introversion and the Reflection of Confidentiality Principle in Iranian Architecture Field Survey Sample: Historic Houses of Birjand

“Introversion” and “Confidentiality” are two main and structural principles in Iranian-Islamic architecture which had an effective impression in formation of cities regional organization and framework materials of Iran’s traditional buildings. Also the ecological factor had been effective in choosing and selecting of introversion principle in Iran’s pre-historic cities still in Islamic period on the base of basic facts and faith credence and Islamic ideology in addition to introversion plan، also the privacy principle has been take into consideration of architectures from two aspect of framework and implication as one of the main factors in cites and buildings designing. Among the spaces which the reflection of two aforementioned principles can be seen obviously in its framework rooms are the houses. Having no direct visional connection of inside of the house with urban spaces and sanctifying and maintaining family bounds and bringing of space and privacy zone in area materials are of the specialty and characteristics of the houses of Islamic period of Iran. The writers in this paper with the aim of exploration and manifestation of two principle of introversion and privacy in framework-space materials of historic houses of Birjand attempt to have observation and field survey to explain it in descriptive-analytic method and data collection tools. The results of the present research indicates that the architectures have been take into consideration the principles of introversion and privacy in space reposing of framework materials in designing and building of historic houses of Birjand which its reflection can be seen in building constructions with introversion design and pattern and providing triple general، private and semi-private privacy layers.