New construction, alteration or renovation of, but not limited to, a deck, porch, patio, entryway, addition, attached garage, garden shed or accessory building, provided the proposed work provides the minimum front setback of 25 feet, and the side and rear setbacks not less than 15 feet from the lot line. Front setback is to be measured from the street right-of-way line where a plan of the way is on file with the Registry of Deeds or, in absence of such plan, from a line which begins 25 feet from and parallel with the center line of the right-of-way.