New York Stock Exchange-listed E-House (China) Holdings announced Monday it has filed a draft registration with the US Securities and Exchange Commission for an IPO of its real estate e-commerce platform unit.

The IPO of Leju Holdings Ltd, a wholly owned subsidiary of E-House, is expected to begin when capital market conditions permit, according to the announcement, with no specific timetable.

On Tuesday, E-House said Leju has signed a cooperative agreement with Tencent, under which the two sides will jointly develop software and tools related to the operation of its mobile property e-commerce business.