Politicians are accused of being undemocratic after planning bosses approved the draft development plan for Pointues Rocques in Guernsey.
The Delancey Conservation Committee, which represents islanders living in the area, has emailed the island's deputies to say they are outraged their views have not been listened to.
The island's planning department has approved plans to build up to 125 homes at the site.
Residents are worried there will be more traffic congestion and green areas will not be properly protected.
Planning bosses say they have listened to those concerns and made changes to the guidelines developers have to follow.
In 2017, 300 islanders, including leading politicians, staged a protest against the original plans to voice their concerns.