No mobile home, trailer, or camper shall be used for permanent residence.

A mobile home may be stored, and following issuance of a zoning permit by the Zoning Agent a mobile home, trailer or camper may be occupied for not more than 30 days in any twelve-month period, provided it is so placed on the lot as to meet minimum yard requirements.

A trailer or camper may be regularly stored accessory to a permitted use, provided that it is so located on the lot as to meet minimum yard requirements.

Replacement of mobile homes parking in nonconformity with § 240-31 is not permitted, even where such replacement does not increase the extent of nonconformity.