Scarcity of land for urban housing appears to be the major problem in Manila together with other local government units in the metropolis. Residential use is estimated at 52% of the total land area and that low and middle income families are still in a quandary on how to provide for their housing needs.
Settlements have grown and proliferated along the railroad tracks, under the bridges, in government or private lots and properties and other danger zones such as esteros or creek, river or the bay area.
As in any other local government units in the National Capital Region, Manila is confronted with the ever growing problem of blighted areas due to the influx of migrants from the provinces and the unregulated growth of squatter population.
The National Statistics Office conducted their latest survey in 1995 dubbed as the Mid-Decade Survey. The last survey conducted of the physical structures of the city was in 1990. As shown in Table 11, single houses (137,273) and multi-unit residential dwelling units (107,160 are the most preferred type of housing in the city. The figures indicate that people are now open to accept the realities of modern urban living. Because of scarcity in land resources, the typical Filipino single dwelling units could no longer be implemented.