The urban population started to increase rapidly after the liberation of Bangladesh in 1971. As a result, housing problem became more acute; acute in the larger cities and towns especially for the low and middle income group of people. In order to cater to the needs of these people, the NHA took up semi-pucca housing and 550 sft to 850 sft flat construction projects along with sites and services projects with plot sizes verifying from 1.75 katha to 5.00 katha. Prices of these houses, flats and plots were payable in installments and on hire-purchase basis. Besides those projects, the NHA was implemented sites and services projects in the districts head quarters of Bogra, Sylhet, Kustia, Barishal, Patuakhali, Faridpur, Boyar (khulna), Maijdee, Tangail and some thana headquarters. The NHA has also implemented semi-pucca housing projects at different districts headquarters, twin-tinshed houses for the squatters at Mirpur, Dhaka, 650 nos. serviced plots for the squatters at Khulna, resettlement of 2600 squatter families at section-11, Mirpur, Dhaka. In 1958, the then government took up refugee rehabilitation schemes primarily in Dhaka, Chittagong, Rajshahi and Khulna considering huge concentration of refugee families in the cities. Subsequently similar refugee rehabilitation projects were taken up Jessore, Dinajpur, Kustia, Mymensingh, Comilla, Ishwardi, Saidpur and Rajshahi.