PHNOM PENH, Cambodia — To sell real estate in Cambodia, agents are brushing up on their Mandarin.

Across this traditionally low-rise Cambodian capital, a building boom is becoming more noticeable as it pushes higher into the sky, and its largest projects are often geared toward Chinese investors, who have only recently taken interest in the nation’s real estate market.

Chinese investors are flocking to Phnom Penh, which had primarily been an investment destination for Southeast Asians, Taiwanese, Japanese, South Koreans and some Westerners. For many of the capital’s largest projects, Chinese are now viewed as the target market.

“Historically, Chinese investment in Cambodia has mainly been in infrastructure,” Ross Wheble, the country manager for Cambodia for the real estate consultant Knight Frank, said in an email. “It is only within the past 18 months that we have started to see the entry of Chinese developers and individual investors.”

This year is going to be a big one in terms of high-end residential property coming on line, Mr. Wheble said.