A debt crisis that rivals China Evergrande Group's default may be brewing in the world's second-largest economy.

Country Garden Holdings Co., helmed by one of China's richest women, Yang Huiyan, has left investors in the dark after dollar bondholders said they've yet to receive coupon payments effectively due Monday. That puts the firm—which had 1.4 trillion yuan ($199 billion) of total liabilities at the end of last year—on course for its first public default if it doesn't make the payments within a 30-day grace period.

Formerly the nation's largest private-sector developer by sales, the builder of more than 3,000 housing projects in smaller cities is a household name and employed about 70,000 people at the end of last year. That status had given it the firepower to withstand an industry cash crunch that led to record defaults since Evergrande first missed bond payments in 2021. But tumbling industry home sales and soaring refinancing costs are threatening that streak.

"Any default would impact China's housing market more than Evergrande's collapse as Country Garden has four times as many projects," Bloomberg Intelligence analyst Kristy Hung wrote in a report Wednesday. "Any debt crisis at Country Garden will have a far-reaching impact on China's housing market sentiment and could significantly weaken buyer confidence on solvent private developers."

Home sales in China are falling again, dashing hopes that policy steps to prop up the industry would spur a lasting rebound. And with creditors demanding prohibitively high yields to lend more money, even Country Garden was forced to say this week that the refinancing situation has crimped its cash flow.