Jabarkan Final design dari Katedral St Paul dalam bahasa melayu

The final design as built differs substantially from the official Warrant design.

Wren received permission from the king to make "ornamental changes" to the submitted design, and Wren took great advantage of this. Many of these changes were made over the course of the thirty years as the church was constructed, and the most significant was to the dome: "He raised another structure over the first cupola, a cone of brick, so as to support a stone lantern of an elegant figure... And he covered and hid out of sight the brick cone with another cupola of timber and lead; and between this and the cone are easy stairs that ascend to the lantern" (Christopher Wren, son of Sir Christopher Wren). The final design was strongly rooted in St. Peter's Basilica in Rome. The saucer domes over the nave were inspired by François Mansart's Church of the Val-de-Grâce, which Wren had seen during a trip to Paris in 1665.

The date of the laying of the first stone of the cathedral is disputed. One contemporary account says it was on 21 June 1675, another on 25 June and a third on 28 June. There is, however, general agreement that it was laid in June 1675. Edward Strong later claimed it was laid by his elder brother, Thomas Strong, one of the two master stonemasons appointed by Wren at the beginning of the work.