He was born in York, the son of architect James Pigott Pritchett senior (1789 – 1868) and his second wife Caroline Benson.
[1] He was educated at St Peter's School, York, before being articled to his father's architectural firm in 1845.
[1] In 1854, he succeeded to the architectural practice of his brother-in-law John Middleton in Darlington, where he would continue to work until his retirement.
[1][2] The same year, his father's firm, Pritchett & Sons of York, won a competition to design two chapels, a lodge and entrance gates for the new Boston Cemetery in Lincolnshire, but it was Pritchett junior who attended the meeting in July 1854 and was commissioned to prepare plans.
[3] Also in 1854, Pritchett was engaged to renovate the medieval St Nicholas Church, Durham, and when the building was found to be beyond repair he was commissioned to design a replacement.