MIRVAC has proposed clearing 230 hectares of wildlife habitat to make way for the next stage of its Greenbank development.
The developer flagged offsetting the clearing with a Queensland Trust for Nature managed 628 hectare site at Mount Mort within the Little Liverpool Range, 60km west of the Everleigh development.
Mirvac Queensland residential manager Warwick Bible said the developer would adopt the Queensland Code of Practice for the welfare of wild animals affected by land clearing.
"Mirvac will preserve 180 hectares of bush land at Everleigh - more than 37 per cent of the total site," he said.
"A state government accredited fauna spotter and catcher will be onsite before and throughout vegetation clearing to ensure the safety and well being of any wildlife.
"If any animals are found, an exclusion zone will be immediately established with no machinery to operate within the inclusion zone.
"A translocation to the offset site is not proposed for this project should any animals be found."
A group of conservationists and residents protested Mirvac's proposal on Thursday morning.
Logan Albert Conservation Association spokeswoman Kathy Faldt said the offset would not compensate the loss of the local environmental asset.
"While any gazetted and protected landscape to support koalas is welcomed, this offset does not consider (the) welfare and future of koalas still living in Greenbank," she said.
"Koalas exposed to habitat clearing will be stressed...they will likely try to move out onto roads where they will be killed. If they are not killed outright they will be rescued or rehabilitated by carers in the community.
"The best outcome for the community and the environment would be to not approve this application."
Ms Faldt said an offset site within the Flinders-Karawatha corridor would have been preferred.
Mirvac will close public consultation for the second stage of the Everleigh development today.
Everleigh will accommodate 3300 homes among 215 hectares of green space when fully developed.
Mirvac is currently selling 41 stage two lots.