St Austell and Clay Country Eco-town

West Carclaze, more formally West Carclaze Garden Village, is a new town still partly under construction, in Cornwall, England, United Kingdom. Its area currently falls under the larger civil parish of Treverbyn.

It was founded out of a plan to build a new, eco-friendly town on a cluster of sites owned by mining company Imerys near St Austell. The plan was first given outline government approval in July 2009. Outline planning permission was granted in September 2018. In July 2022, its first residents moved in. It's expected that West Carclaze will take around 15 to 17 years to complete, by its conclusion being planned to include its own town centre and 1,500 homes total, as well as a number of leisure facilities, employment space and a nearby technology park.

A number of organisations are involved in the development. A joint venture company called ECO-BOS has been set up by Imerys, and Orascom, with assistance from the Eden Project. Cornwall Council leads on some part of the project.

As residents begun to move in from 2022 and onwards, its population count was not recorded during the last 2021 UK census. Sources suggest that at least twelve people have settled in the new town so far, minimum.