The conditional uses listed in this chapter may be permitted upon authorization of the appropriate board authorized to do so by Town Board resolution or, alternatively, the Town Board, in accordance with the standards and procedures set forth in this article. In permitting a conditional use or the modification of a conditional use, the appropriate board may impose, in addition to those standards and requirements expressly specified by this chapter, any additional conditions which the Board considers necessary to protect the best interests of the surrounding property, the neighborhood or the Town as a whole. These conditions may include but are not limited to increasing the required lot size or yard dimensions; limiting the height of buildings; controlling the location and number of vehicle access points; increasing the street width; increasing the number of off-street parking and loading spaces required; limiting the number, size and location of signs; and requiring diking, fencing, screening, landscaping or other facilities to protect adjacent or nearby property. In the case of a use existing prior to the effective date of this chapter and classified in this chapter as a conditional use, any change in use or in lot area or an alteration of structure shall conform with the requirements dealing with conditional uses.