Multinational company Babcock & Brown donated more than $330,000 in a series of payments to the Labor Party while negotiating a private development lease of Killalea State Park.

NSW Greens MP Sylvia Hale has called for a halt to the controversial development and has demanded an independent judicial inquiry into the deal.

Ms Hale said the inquiry should investigate whether the lease negotiations were affected by the 18 donations.

Lands Minister Tony Kelly last year signed an agreement to lease three chunks of park land for 50 years to Killalea Coastal Investments, a joint venture by Babcock & Brown and Mariner Financial, to build 202 units and a resort.

Mr Kelly's spokesman said the minister was not aware of individual donations to the ALP, and called the questions "a desperate attempt to breathe life into the campaign against Killalea".

Ms Hale was critical of how many of the payments coincided with government decisions to proceed with the commercial lease deal for the popular coastal park between Kiama and Shellharbour.

These included three donations when changes were made to the Crown Lands Act and the Killalea State Park Plan of Management to allow the development to proceed.

There were eight donations while the lease agreement was being negotiated, and last June, at the height of the community protest, two further payments.

More than 12,000 signatures opposing the lease of the Crown land were tabled in Parliament in the middle of last year.

NSW Labor Party secretary Karl Bitar said it was ridiculous to suggest donations were linked to policy decisions.

"The ALP head office does not tell ministers who donated to us and how much they have donated," he said. "There's no official policy, but there's no usual exchange of information."

A Babcock & Brown spokeswoman said the company had long donated to political parties, the payments were often for dinner or lunch functions, and it was a long stretch to tie them to the Killalea development.

In February, the Mercury reported that figures released by the Australian Electoral Office showed Babcock & Brown had substantially expanded its donations.

This week Ms Hale compiled these with additional donations listed on the Election Funding Authority's returns for NSW.

They are all for NSW ALP, and total $337,000 from May 2003 until the end of the last financial year.

Ms Hale said the resort project should be suspended to check if the donations had affected the negotiation of the development agreement.

She has a private members bill scheduled to be debated in Parliament on April 3, which seeks to ban developer donations to all politicians, parties and political candidates at local and state levels.

Ms Hale said the payments should be compared with the substantially lower earlier donations: In 2005-2006 the developer gave NSW Labor $65,000, in 2004-2005 $63,000 and in 2003-2004 only $33,000.

Meanwhile, the international corporation kept its contribution to the NSW Liberals at about $33,000.

Mr Kelly's spokesman said ministerial decisions about Killalea were based on "the benefits they will bring to the region, the park and the people that come to enjoy it".

"As you already know, the minister is not aware of the details of individual donations to any political party, be it the Greens, the Coalition or the Labor Party," he said.

Fairy Meadow firefighter Mark Paloff got his union involved in the now year-long community push to stop the Killalea development, and last May the South Coast Labour Council slapped a green ban on construction work at the park.

Mr Paloff said it was outrageous the community was "expected to believe that ALP ministers were unaware of this constant flood of large donations".

The Babcock & Brown spokeswoman said the company had a history of donating to both NSW Labor and Liberal.

She said the donations were not tied to a specific region, and it would be misleading to tie them to the development. The Killalea resort was a joint venture, which had not made any donations.

The developer has been in talks with the NSW Planning Department and has asked for the resort to be assessed by the Government as a major project.

The developer hoped to lodge a project application within the next nine weeks.