The priciest place to rent an office? Hint: It's in Asia
Asia is home to the most expensive city in the world to rent high-rise office space and demand is not expected to wane, according to Knight Frank. · CNBC

Land-scarce Hong Kong is the most expensive city in the world to rent office space in high-rise buildings and demand is not expected to wane, according to property consultancy Knight Frank.

Prime rent - or rent paid to occupy a central city area - for a skyscraper office in Hong Kong's center is an estimated $255.50 per square foot per year.

In comparison, prime rent in Singapore, which is often used as a yardstick against which Hong Kong is measured, is less than half the cost at $93.25 per square foot, said Knight Frank in its "Global Cities: The 2016' report.

The typical size of a small office with amenities such as a kitchenette and meeting area is 880 square feet in Hong Kong, based on a calculation from Officespace.co.uk. The prime rent for such an office would come to a whopping $225,000 or thereabouts per annum.

Two International Financial Center, located in Hong Kong's Central District, offers Hong Kong's most expensive office rental, at about $264 per square feet annually.

Knight Frank forecasts Hong Kong's office rental growth to increase by 12 percent by the end of 2018, simply because of the lack of supply.

City prime rent per square feet on an annual basis*

"Limited office availability in the CBD, also known as Central, means it is becoming increasingly difficult to fulfill multinational companies' rising demand for business space," Pamela Tsui, senior manager of research and consultancy for Greater China at Knight Frank, wrote in the report.

The shortage of office space and sky-high rents in Hong Kong's central business district has led to a decentralization trend, Knight Frank found.

Initiatives undertaken by the Hong Kong government to take the heat out of the rental market have included plans to convert Kowloon East, which was a manufacturing zone, into a second central business district. Other policies such as land rezoning, connectivity improvement and enhanced urban design have been implemented to combat the undersupply of offices in Hong Kong.

Read More Chinese property investors head to the Med

Apart from limited supply, stratospheric office rent in Hong Kong's central business district is driven by "robust demand from corporate occupiers given Hong Kong's status as a major financial center in both Asia and globally," said Marcos Chan, head of research for Hong Kong, Macau and Taiwan at CBRE.

The convenience of business amenities including hotels, convention centers and Michelin-grade restaurants within walking distance of the central business district added to the demand for prime offices, Chan noted.