And it applies to landlords who would discriminate against those protected classes by denying their applications or barring kids from common areas, evicting them when they had another kid, etc.

based on what I know it wouldn't protect renting out to your child.

Reading the CC&Rs will be more relevant to the question

https://www.hud.gov/program_offices/fair_housing_equal_opp/discrimination_against_families_children#_What_Is_Prohibited?