The basic concept of chrono-typology is to identify particular constructive elements associating them with the period when they were used. For any single element, distinctive features may include materials, construction techniques, shapes or dimensions. It has to be noted that chrono-typology applies to element types, not to the whole building. It was for this reason we took into account the different typologies of building techniques (walls, arches, windows, doors, etc.). Data becomes meaningful when a large production of the same common-use element is identified. The core of the method is a table (the so-called chrono-typological table) that records the meaningful instances of constructive elements, associated with an appropriate date period, obtained by other dating methods: surveys, excavations, epigraphs, inscriptions and building typologies (for example, mosques and minarets, which did not exist prior to a certain date); the period boundary is marked by the oldest and most recent occurrences of the element in an homogeneous territory: in our case the Hawrān region.