(a) Permitted Uses.
(1) Permitted uses of land or buildings, as hereinafter listed, shall be permitted in the districts indicated under the conditions specified. Unless otherwise specifically set forth, wherever a permitted use is named as a major category in this Ordinance, it shall be deemed to include all and only those itemized uses under the said major category listed in the R1 District of this Ordinance. No building or tract of land shall be devoted to any use other than a use permitted hereinafter in the zoning district in which such building or tract of land shall be located, with the exception of the following:
(2) Uses lawfully established on the effective date of this Ordinance. Uses already established on the effective date of this Ordinance and rendered nonconforming by the provisions thereof shall be subject to the regulations of Chapter 1149 (Nonconforming Buildings and Uses.)
(b) Lot Size Requirements. Lot size requirements shall be as specified under each zoning district. In addition, the following regulations shall be complied with:
(1) No building shall be converted so as to conflict with, or further conflict with, the lot size requirements of the district in which such building is located.
(2) No use shall be established or hereafter maintained on a lot recorded after the effective date of this Ordinance, which is of less area or less width than prescribed hereinafter for such use in the zoning district in which it is to be located.
(3) No dwelling unit shall be constructed in any residence district without public utilities (water and sanitary sewers) unless there is provided the following minimum amounts of land area for each such dwelling unit:
A. Lots without both public water and public sanitary sewers, being also an area where such public facilities will not be established within the forseable future (usually within the limits of the capital improvements program), 20,000 square feet with a minimum frontage at the building setback line of 100 feet; and an average frontage of at least 100 feet.
B. Lots without public sanitary sewers only, being also an area where such public facilities will not be established within the forseable future 10,000 square feet, with a minimum frontage at the building setback line of 100 feet, and an average frontage of at least 100 feet.
C. Lots without public sanitary sewers only, being also an area where such public facilities will be established within the forseable future, - 10,000 square feet, with a minimum frontage at the building setback line of 100 feet, and an average frontage of at least 100 feet.
Except that, upon application to and approval by the Planning Commission, the criteria set forth in this subsection (b) may be waived, based on practical difficulties, unnecessary hardship, aesthetic, or personal desire to develop and maintain estate-type lots.
Where either or both public water and public sanitary sewers are unavailable, certification of the Jefferson County Health Board that an individual sewage disposal system and/or private supply can be constructed on the lot in question in accordance with applicable regulations of the State Board of Health, shall be required before issuance of the zoning certificate.
It is noted that the Small Sewage and Excreta Disposal Regulations adopted by the Ohio State Board of Health, specify that all subdivisions or housing developments (constituting any tract or parcel of land divided into two or more lots for immediate or future use for housing or building development), originating after July 1, 1970, shall be served by an approved public sewage system.
(c) Yard Requirements and Open Space.
(1) Yard requirements shall be as set forth under each zoning district. Front, side, or rear yards shall be provided in accordance with the regulations hereinafter indicated and shall be unobstructed from the ground level to the sky, except as allowed in Section 1147.08.
(2) The floor area ratio requirements shall determine the maximum floor area allowable for the building or buildings (total floor area of both principal and accessory buildings) in direct ratio to the gross area of the zoning lot.