The Intermixed houses are the combination of extrovert bungalow style with the traditional introvert courtyard house where both type of houses are originated in the same compound belonging to the same family. The outhouse of the complex has usually been initiated with extrovert isolated character while the inner house is facing an inward court. It is perceived that the outhouse has better degree of importance rather than inner house and the overall compound image emphases a bungalow type image. In this typology, the outhouse is situated at front or beside the inner house adjacent to a space like lawn, yard etc. where the inner house always covers a court either enclosed or detached. The intermingled house is eventually defined on the basis of examples stated above as a house complex combined both bungalow and courtyard house. Courts initiated from the rustic hut of Bengal are not only an open space or lawn of the house, rather it indicates as an enormous part of aboriginal living tradition in this region. Beyond tradition, the courts have organized or inclined the climatic viability in the house to meet the optimal necessity of life in deltaic region since thousand years which indicates that the service of courts are more essential for adaptation rather than requirement. The elites were frequently habituated in this manner, which encouraged them to create courts in inside or outside of the living places to support certain courtyard houses in the compound. It is also seen that numerous courtyards have been used in a joint-family house in the same compound or a single court has occupied different pavilions in the living boundary. This specific background possibly has influenced to create or establish a diverse block followed by colonist bungalow inside the compound besides the living unit. These bungalows were simply used for official or other activities other than living. Definitely, it is the scenario that the house complex primarily would have been set forth with a courtyard house connect with a bungalow and in secondary concern with temples, tanks and other associated structures. This particular style progressively has established a house-form, providing a solution of official (formal) and private domain in a singular compound with distinct region of cultural periphery.
Conversion of house form of Dhaka (20th century)
Morphology of Dhaka
Morphology of Dhaka is about a thousand years old which is built on chowks (Market-squares) and mahallas (cluster of houses nearby a chowk or beside a linear street) (Khan, 1982). In their outward presences, all streets being avenues for retailing goods are bazaars. Mahallas cannot be willingly acknowledged as they are hidden behind bazaar or street frontage. In social classification, mahallas are interior family territories linking to the house and bazaars are peripheral (Khan, 1985). However, this pattern provided birth to two distinct methods of mahallas based on following plot divisions. This also states alterations in the socio-economic structure of the neighborhoods. The first form, mainly found in Hindu dominated mahallas, is along a slight strip of land up to 40m long with a road front of around 2.5 to 3.5 and height of up to four stories. Being narrow and deep, there are no beginnings on the side walls; inner courts are the only basis for light and ventilation. In spite of having several small courts, the interior is usually dark and stifling. The linear site has an access road in front and a canal or service lane at the rear part. This pattern acquired shape in the pre-colonial period when the local city was reliant on natural and manmade water bodies for drinking water, waste disposal, transport and communication. So, plot subdivision had to take into reason the street (formal access) and the service (back), gradually generating the pattern (Rahman, 1995). But role of trade and the commercial value of the plot demanding a road frontage for each plot, and the use of the plots as shop-houses, played a key role in developing the pattern.
The ever-changing second type is assisted with intricate network of lanes and by-lanes grown out of sub-division. Being loosely built, it is alleged through the periphery walls. These were mostly established and occupied for residential purpose. Nevertheless, with the improvement of native towns during the colonial period, canal based drainage system perished. With systematized service, houses reverted to unique form; the popular and determined second form was thus built around a courtyard. The occupation and group of people according to class also varied in these two different classes of evolution. Businessmen, craftsmen or people from specific occupational group, who were dominantly Hindu, occupied the first type. Most of them desired the use of road frontage for their living. Well-off people and nobles related to the administration, agriculture and trades, or people from unfamiliar cultures like the Europeans, Armenians or the North Indians generally occupied the second type.