Property subject to taxation

54:4-1. All property real and personal within the jurisdiction of this State not expressly exempted from taxation or expressly excluded from the operation of this chapter shall be subject to taxation annually under this chapter. Such property shall be valued and assessed at the taxable value prescribed by law. Land in agricultural or horticultural use which is being taxed under the "Farmland Assessment Act of 1964," P.L.1964, c.48 (C.54:4-23.1 et seq.), shall be valued and assessed as provided by that act. An executory contract for the sale of land, under which the vendee is entitled to or does take possession thereof, shall be deemed, for the purpose of this act, a mortgage of said land for the unpaid balance of purchase price. Personal property taxable under this chapter shall include, however, only the machinery, apparatus or equipment of a petroleum refinery that is directly used to manufacture petroleum products from crude oil in any of the series of petroleum refining processes commencing with the introduction of crude oil and ending with refined petroleum products, but shall exclude items of machinery, apparatus or equipment which are located on the grounds of a petroleum refinery but which are not directly used to refine crude oil into petroleum products and the tangible goods and chattels, exclusive of inventories, used in business of local exchange telephone, telegraph and messenger systems, companies, corporations or associations that were subject to tax as of April 1, 1997 under P.L.1940, c.4 (C.54:30A-16 et seq.) as amended, and shall not include any intangible personal property whatsoever whether or not such personalty is evidenced by a tangible or intangible chose in action except as otherwise provided by R.S.54:4-20. As used in this section, "local exchange telephone company" means a telecommunications carrier providing dial tone and access to 51% of a local telephone exchange. Property omitted from any assessment may be assessed by the county board of taxation, or otherwise, within such time and in such manner as shall be provided by law. Real property taxable under this chapter means all land and improvements thereon and includes personal property affixed to the real property or an appurtenance thereto, unless:

a.