The articles privided show clearly that the means to construct adequate housing exists and it is the failure to address that fact that cuases homelessness - not an increase in population
Of course an increase in population adds to housing needs, as does any child leaving home for the first time or any couple gegging married and starting families or the deterioration of existing housing stock.... or the hudred other neds for building.

Jim,
You can't have it both ways. If a child leaving home automatically requires an additional property, then two persons marrying should free-up a property, not require an additional one.