The supply of housing is mainly dependent on private sectors, not the government itself to build low-rent housing. Because the demand for housing is not only from low-income people, but more importantly, the influx of new immigrants, this part of the population needs to use market mechanisms to digest.
The fees charged by the city from the developer need to be reduced to help developers build houses better. The city can increase revenue by letting developers to build more houses , rather than raising the threshold for developers. The city government needs to speed up the approval of the applications to adapt to the market demand for housing.