To permit a transitional use between a business or industrial district and a dwelling district where the side of a lot in a one (1) family district or a two (2) family district abuts upon a lot zoned for business or industrial purposes as follows:

Permit the extension of a building or use into a more restricted district, immediately adjacent thereto, but not more than fifty (50) feet beyond the boundary line of the district in which such building or use is authorized.

Grant in undeveloped sections of the city temporary and conditional permits for not more than two (2) years. The granting or existence of such temporary or conditional permit shall not be reason or cause for extension of such permit.

Permit such modification of yard, open space, lot area or lot width regulations as may be necessary to secure an appropriate improvement of a parcel of land if such parcel is separately owned at the time of the original passage of this ordinance or subsequent annexation of the city and is of such restricted area that it cannot be appropriately improved without such modification.

To determine in cases of uncertainty the classification of any use not specifically named in this ordinance.

To grant a permit for the extension of a use, height or area regulation into an adjoining district, where the boundary line of the district divided a lot in a single ownership at the time of the adoption of this ordinance.

To permit as an accessory use a parking area for passenger automobiles on a lot or lots in a single-family, duplex, or apartment house district adjoining or across a street of not more than fifty (50) feet in width from an R-1, R-2, or R-3 district, subject, however, to the following provisions:

Permit the reconstruction of a building occupied by a nonconforming use, or permit the extension of a nonconforming use of a building upon the lot occupied by such use or building at the time of the passage of this ordinance.