"The goal is to achieve sustained construction on all suspended property projects in Zhengzhou by Oct. 6," said a government notice dated Tuesday.

Real estate firms must pledge valid assets to local government-backed financing companies if they want to get the special loans, one source cited the notice as saying.

Homebuyers in at least 80 cities have threatened to halt making mortgage payments since late June as developers stopped building projects due to strapped liquidity or strict COVID-19 restrictions.

The mortgage boycott has added to worries about a prolonged slump in China's property market, which has lurched from crisis to crisis since the summer of 2020 after regulators stepped in to cut excess leverage.

Some developers are encouraged to apply to the court for bankruptcy to ensure that the disposal of insolvent property developments is completed as soon as possible, one source cited the notice as saying.

"It's good, but the move will save housing projects, not the developers."

Real estate firms should do everything possible to ensure project delivery, by raising funds through disposal of undeveloped lands, assets and equities, and returning misappropriated funds, according to the notice.

Zhengzhou government didn't immediately respond to Reuters' request for comments.

Local governments, including the central province of Hubei, have taken steps to prop up the property market by setting up local bailout funds.

Zhengzhou was one of the first cities to do so, setting up a bailout fund worth 10 billion yuan ($1.43 billion) in July. The city government has proposed ways to several big developers to resolve the unfinished-home issue, including through loans, mergers and acquisitions, as well as turning the projects into subsidised rental housing, local media have reported.

($1 = 6.9747 Chinese yuan renminbi)

(Reporting by Clare Jim, Liangping Gao and Shuyan Wang; Editing by Bernadette Baum)