The resulting Poundbury master plan, which was shared with local residents, divided Poundbury into four distinctive quarters, each one designed by handpicked architects.
The first phase, which began in 1993, was completed in 2001, while the final section, the North-West Quadrant, is expected to be finished by 2028.
Poundbury will have increased the population of Dorchester by about one quarter, with an eventual community of about 5,800 people.