Occupancy of any dwelling shall be restricted to persons of the age of 55 years or over; provided, however, that a husband or wife, regardless of age, residing with his or her spouse may occupy such dwelling so long as such spouse is of the age of 55 years or over. Further, no dwelling may be occupied by any child under the age of 19 years. In the event that an owner of a lot dies, testate or intestate, leaving as heirs one or more persons who do not qualify as to age, these restrictions shall in no way be deemed to restrict the ownership of said lot by the heirs; provided, however, that said heir or heirs, their successors or assigns shall not reside in the dwelling until he or she meets the age requirements, together with such other requirements that may be contained herein.