Earlier quoted context omitted.
Low-income families often pack many people into a small apartment, so it's not unrealistic for one apartment to need 3 parking spots for two working parents and a working child, just as an example. I lived in a household like that growing up
3 is still reasonable. They went to 5.3 parking spots per apartment.
Also, I've just noticed: why on earth would they build affordable housing next to the beach? Is this some twisted take on equality, that poor people also deserve view at the ocean? If "affordable housing" competes for the same land as luxury residences it will end up just as expensive.