2.—A person shall be regarded by a housing authority as being homeless for the purposes of this Act if—

(a) there is no accommodation available which, in the opinion of the authority, he, together with any other person who normally resides with him or who might reasonably be expected to reside with him, can reasonably occupy or remain in occupation of, or

(b) he is living in a hospital, county home, night shelter or other such institution, and is so living because he has no accommodation of the kind referred to in paragraph (a),

and he is, in the opinion of the authority, unable to provide accommodation from his own resources.