A high-powered international businessman who landed in Adelaide from COVID-stricken France will quarantine at a suburban home instead of a medi-hotel.

He has been granted an exemption by authorities.

Pierre-Eric Pommellet is the global CEO of Naval Group, the company contracted to build Australia's submarines in South Australia.

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He is based in France, which has had more than three million COVID-19 cases, including 18,000 yesterday.

However, on his arrival in Adelaide, he was allowed to travel to a suburban house for 14 days in quarantine.

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Police Commissioner Grant Stevens told 9News there were officers at the property 24 hours a day, and additional security had also been built into the house.

A statement from SA Health said additional testing and high levels of infection control are in place for the exemption.