Is it permissible for me to apply for a government housing unit, given that I own an apartment which I intend to keep for my infant son, and what should I do if I obtain it while not being entitled to it, and is it permissible to rent or sell it?

The ruling on applying for apartments depends on the availability of the required conditions in the beneficiaries. If owning another apartment prevents one from applying, then the questioner is not entitled to apply. And if his application is accepted despite not meeting the conditions, he must clarify the matter to the responsible authority.