The architectural organization in the Ottoman Empire did not adhere to a principle of fixed and immutable rules within which it operated. The differences between the ideal or idealized and the actual operation undoubtedly generated tension, conflict, and dynamism. From this perspective, even if the idealized working scheme for the Hassa Architects' Guild (Hâssa Mimarlar Ocağı) is accepted as correct, it was not effective in the late 18th century, the historical period chosen by the book for its examination of the subject. Undoubtedly, if one sets aside the historical narrative shaped by the organization's status-dependent order, the chief architect-apprentice relations, and the degree of the chief architect's control and influence over every architectural activity in the empire, which is idealized and presented as if everything was in order, the question "How was architectural organization shaped in the classical period of the Ottoman Empire?" has not yet been addressed. For this reason, attempts to answer the question "What kind of result would emerge if architectural organization in the late Ottoman period were examined?" find their place in the book with a perspective beyond idealized schemes. In the first section of the book, based on available information, the aim was to examine the transformations in construction organization from the late 18th century onwards by making comparisons with practices from the classical period. The organization in the provinces between the second half of the 18th century and the Tanzimat period, the regulation of architectural revenues and construction organization after the Tanzimat, and the gaps created by the system in Ottoman construction organization are discussed. In the book, events related to the construction environment are specialized and explained under subheadings with examples that reinforce the subject. The aim was to develop different topics, examples, and discourses from the sources written and published on this subject to date, and to write what has not been said or written, thus doing what has not been done before. The book discusses the construction environment and architectural activities from approximately 200 years ago.