Mining giant BHP Billiton has owned at least four vacant properties in Port Hedland's West End for more than a decade, in what critics believe is an attempt to stymie plans to transform the industrial precinct into a cafe and upmarket apartment strip.

The analysis of BHP's property holdings comes amid heated debate about development in and around the country's busiest port that has pitted those who want to see a marina, cafe strip and luxurious accommodation match the iron ore riches that flow through the town at odds with those concerned it will disrupt key port activities crucial to the wealth of the nation.