But against the backdrop of nuclear talks between Tehran and world powers, authorities hope foreign investors will finally wise up to the "golden opportunity" of doing business in Chabahar, Iran's only gateway to the Indian Ocean.
Between 2006 and 2010, the UN Security Council adopted six resolutions, four of which imposed sanctions, over Iran's nuclear and missile programmes.
Since 2012, the United States and the European Union have also applied a series of unilateral sanctions that specifically target the energy and banking sectors.
The deal is aimed at preventing Iran from developing nuclear weapons in exchange for an easing of the sanctions.
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The United States, one of the six world powers negotiating with Iran along with Britain, China, France, Russia and Germany, has said sanctions would be lifted in stages as the deal is implemented.
The port is located in Sistan-Baluchistan province and provides countries in southeast and central Asia with a gateway to trade with Iran.
There are plans to turn the zone into a hub for petrochemical activities as well as developing it into a tourist destination.
The CFZ already has a large commercial area where consumers can snap up goods that are 30 to 40 per cent cheaper than in the rest of Iran.
"People come from all over the country to buy," said Nematollah Rastegar, manager of an electrical appliances shop in the CFZ.
But the tide appears to have turned slightly since 2013, when Iran and world powers began talks aimed at a breakthrough on the nuclear issue.
According to Moghadam, 250 companies have made a "partial comeback" to Chabahar while "US, Canadian and French companies have shown great interest."
In early May, India signed a multi-million memorandum of understanding with Iran to develop Chabahar port.
The move aims to provide India with access to Afghanistan that bypasses Pakistan, and help it compete with China, which is investing heavily in the Pakistani port of Gwadar.