Truro Cathedral was designed by John Loughborough Pearson as the first cathedral to be built on a new site in England since Salisbury Cathedral in 1220. The Cathedral was constructed in two phases; the eastern arm, crossing and transepts under Pearson’s direction between 1880 and 1887, and the towers and nave under the direction of Pearson’s son, Frank between 1898 and 1910 following his father’s death in 1897. 

Izaak was appointed as cathedral architect in July 2012. DHV Architects have completed several major projects at the cathedral. These include two phases of re-roofing to the nave, nave aisles and baptistery, funded by grants from the First World War Centenary Cathedral Repair Fund, and the reordering and refurbishment of visitor facilities in the Chapter House link. Smaller projects include the installation of the Finn Cross glass plinth in St Monica’s Chapel and accessibility improvements to steps. Daring high-level stone repairs were undertaken recently to the southwest tower from a cantilevering bird cage scaffold; the video below shows the erection of this scaffold high above the ground.

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The re-roofing and conservation works to St Mary's Aisle are now on site.