A leasing expert had pointed out that in Hong Kong, the locals still outnumber foreign tenants living in luxury homes. According to Mingtiandi, about HK$300,000 (US$38,222) a month comes from mainland executives. They also account for about 20 percent of the high-end luxury residential leasing in 2018, a 5 percent increase from figures recorded in 2013.

Mainland corporate executives still have the upper hand in Hong Kong's much sought-after prime office space. The competition hasn't even been close; these executives pay the 'highest rents' for these homes in the highly expensive Hong Kong real estate market. It also came at a time when the real estate market is undergoing a slow-down.

Home sales in the city are still down 30 percent despite the hunger for expensive real estate. The growing number of Chinese firms should remedy that, however, as demand has been spiking upwards in the past number of months. Hong Kong has also been pinpointed as a prime destination for companies doing finance and trading.

Louis Ho, the principal sales director for The Peak & South Mid-Levels West at StatelyHome, said that more mainland companies appeared to prefer 'generous' accommodations for their top executives. The luxury home sales unit director was referring to newly listed Hong Kong firms purchasing top-of-the-line real estate.

The director, according to SCMP, further pointed out that it isn't strange for these executives to purchase housing at HK$300,000 per month. While Western companies have also been looking for and buying properties, they have been doing so at more modest prices, somewhere around the HK$200,000 mark.

Meanwhile, the JLL listed mainland corporate executives as the main force behind the 20 percent rating of high-end luxury residential tenants. In 2013, most of these mainland executives appear to have stayed in China, making up just 5 percent of the tenants occupying high-end spaces in Hong Kong.

Laurie Lankester, a JLL residential head, explained this by saying that mainland clientele appeared to have been a part of the high-end executive luxury level of the real estate rental market only recently. They drove the activity level to such ratings, a reason why they have been pinpointed.

With the trend going this way, Hong Kong's highly expensive real estate market may soon see itself having some sort of modest real estate activity.