Specifications include, but are not limited to: a) No development plan shall be approved unless it is determined that the following standards are reached to the maximum extent feasible, or to the extent feasible given the circumstances of the property, in accordance with the provisions of these regulations. (1) Build-to line requirement. In no case shall the front setback specified for the underlying zoning district take precedence. All building front setback requirements shall be zero, except under the following circumstances: a. Where other site requirements such as utility or access easements preclude such building placement. b. Where it is determined that the use of existing buildings on adjacent parcels would be significantly adversely affected by setbacks from front or side property lines that are smaller than those on the adjoining parcels (e.g., light would be blocked from existing windows on the side of a building).