Details of the new policy were unveiled a fortnight ago after the NSW Liberals and Nationals made a deal on koala protection which gives more concessions to farmers.
The new planning regulations will leave them largely exempt from extra koala protection responsibilities.
Rural areas will be removed from the new State Environment Planning Policy on koalas and come under a new code that is yet to be developed.
Land that is zoned for farming and forestry will not be subject to the rules designed to protect koala habitat.
The changes will focus on high-conservation areas where 95 per cent of development occurs, and there'll be specific plans for koala habitat in the Tweed and Byron shires.
However, NSW Farmers Association president James Jackson said he was concerned about the finer detail.
"The stinger of this is in the tail, and that is the proposal to actually review land management codes," he said.
"So although on the face of it it seems to be something we concur with, the stinger is exactly how the land management codes and guidelines will be affected."
Mr Jackson said he would be looking for more clarification on the new policy and for more information regarding reviews of land management codes.
"We're desperately trying to find out exactly what this means and what the impact is for our farmers and their ability to conduct their business on their land," he said.
However, Mr Jackson denied that any concessions given to farmers would see koalas threatened.
"The koalas that are alive in New South Wales at the moment are almost exclusively alive on private property managed under these codes."
Green groups have labelled the new policy as "catastrophic".
A forest conservation group has described the NSW Government's new koala policy as a death blow for koalas.
North East Forest Alliance president Dailan Pugh said he was concerned that it removed councils' ability to regulate logging on private land.
"So council can no longer require a consent for logging or prohibit it, so currently throughout north-east New South Wales there's something like 167,000 hectares of land that's zoned for protection where logging's not allowed and there's about another 600,000 hectares where councils require consent," he said.
"So under what they're proposing here, all that protection gets removed.
"Across the board, councils' ability to regulate what occurs on private land is gone in terms of logging and they're doing that because they're concerned that too many councils are, to use their words, 'greenie councils' who are requiring these constraints for logging.