PERSON, for the purposes of article four of subchapter three of this chapter, means any adult or child over the age of four years. The term PERSON as used in subchapters four and five of this code shall include the owner, mortgagee or vendee in possession, assignee of rents, receiver, executor, trustee, lessee, agent or any other person, firm or corporation directly or indirectly in control of a dwelling or part thereof. Whenever a multiple dwelling shall have been declared a public nuisance to any extent pursuant to section 27-2114 of article one of subchapter five of this chapter and such declaration shall have been filed as therein provided, the term "person" shall be deemed to include, in addition to those mentioned hereinabove, all the officers, directors and persons having an interest in more, than ten percent of the issued and outstanding stock of the owner as herein defined, as holder or beneficial owner thereof, if such person be a corporation other, than a banking organization as defined in section two of the banking law, a national banking association, a federal savings and loan association, the mortgage facilities corporation, savings banks life insurance fund, the savings banks retirement system, an authorized insurer as defined in section one hundred seven of the insurance law or a trust company or other corporation organized under the laws of this state all the capital stock of which is owned by at least twenty savings banks or by at least twenty savings and loan associations or a subsidiary corporation all of the capital stock of which is owned by such trust company or other corporation.