The owner has the burden of proving a manufactured home located in the park is unsafe or unsanitary or fails to meet the park’s aesthetic standards. A resident must not be forced to make an aesthetic change to his home’s original design which would create undue financial hardship and which is contrary to the terms of the rental agreement during the term of the rental agreement. This section does not prohibit a park from requiring compliance with new or upgraded aesthetic standards which apply generally to homes in the park upon expiration of the lease term or upon a continuance of a tenancy beyond the original term. However, notice of the requirement must be given by the owner to the tenant at least thirty days before the effective date of the change.