Encroachment was removed in two villages - Shahdara and Nalgarha, Noida Administrative Officer Rajesh Prakash said.
"The authority team first demolished unauthorised construction on 10,000 square metre land in Shahdara village near the proposed FNG road," he said.
The encroachers had constructed a boundary wall on the land which belongs to the authority, he said.
Prakash further said, "Authority bulldozers demolished unauthorised construction on a 15,000 square metre land in Nalgarha."
Colonisers had planned plotting of unauthorised colony on this land, sources said.
Few days back, the Greater Noida Authority had demolished an unauthorised colony in Haibatpur.