Development which does not conform to the provisions of this code is called nonconforming development. Certain provisions of this code establish the means by which lawful nonconforming development may be allowed to continue and the means by which new development may lawfully deviate from the terms and conditions of this code. The types of nonconforming development include nonconforming uses and structures; development which is approved at the time of enactment of this code as a planned development, site plan or subdivision plat, but which is not completely constructed; or development which is proposed on or after the date of enactment of this code for which a variance is approved. Uses and structures which are not granted status as a lawful nonconformity shall be prohibited and are subject to removal according to the provision of this code.