By Gaurav Raghuvanshi

SINGAPORE--City Developments Ltd. (C09.SG) on Monday reported its highest ever quarterly net profit as it sold more houses in the fourth quarter. However, the Singapore developer warned of "headwinds" in the local real-estate market.

Net profit in the October-to-December quarter rose 73% to 385 million Singapore dollars (US$284 million) from S$222 million in the same period a year earlier. Revenue rose 7.4% to S$847 million, City Developments said in a statement to Singapore Exchange, where it is listed.

City Developments said property development was the main contributor to its income. Despite tough market conditions, the company and its associates sold 1,378 units valued at about S$1.4 billion, it said.

Write to Gaurav Raghuvanshi at gaurav.raghuvanshi@wsj.com

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