A national property information platform is set to be established by 2017, paving the way for a possible new property tax, according to a document released by the Ministry of Land and Resources on Thursday.

The platform is a central piece in China's (FXI, quote) planned real-estate registration project, formally launched earlier this year, which is aimed at ending a patchwork system which is overseen by various departments in various cities.

The current fragmentation of the system means the government cannot track a person's entire property portfolio if it is spread across different cities, making it impossible to levy property taxes nationwide.

The ministry said the platform would consolidate all real-estate information across various administrative levels, and a national database should be implemented by 2016, before a larger information platform covering the entire nation was established the following year.

The database plan comes as the top legislature recently placed its long-awaited property tax law on the legislative agenda. It is expected to be passed as early as 2017.

Analysts said in theory, the passing of the law and the creation of the unified information platform would then clear the way for a new property tax.

However, various considerations could still delay the process.

Policymakers would have to weigh, for instance, between gains that might be made from additional sources of tax introduced, and the loose from the dampened broader property market.

They are also likely to be cautious, they said, given land-sale revenues and property transaction-related taxes already account for 52 percent of total local government revenue.

"I think a massive property tax on all existing properties would be difficult to introduce, even in a few years," said Jeffery Gao, head of China Property Research, Nomura Securities.

"It will not gain any ground unless China's economy has really shaken off its reliance on real estate."

Content Curiosity of China.org.cn