Delhi Development Authority will construct 67 thousand flats in various parts of the national capital in the next couple of years. At a meeting held in New Delhi with its official, DDA approved the proposal to build the flats under the categories of lower income group, lower category and economically weaker sections.According to the DDA official, these flats will come up in the areas like Rohini and Narela and will be ready in the next couple of years. The agency has also decided to construct them by using new technologies.