In R10H Districts, the City Planning Commission may permit transient hotels. Where a building in existence on December 15, 1961, is located on a zoning lot, a substantial portion of which is located in an R10H District and the remainder in a Commercial District, the Commission may also permit the conversion of specified floor area within such building from residential use to transient hotel use without regard to the floor area, supplementary use or density regulations otherwise applicable in the Commercial District. The Commission may also allow any subsequent conversion of such specified floor area to and from residential or transient hotel use to occur without further Commission approval, subject to the conditions of the special permit.

As a condition precedent to the granting of such use or bulk modifications, the Commission shall find that such modifications will not impair the essential character of the Residence District.

The Commission may prescribe appropriate conditions and safeguards to minimize adverse effects on the character of the surrounding area.