Apple HQ valued at $4.17 bn; one of world's costliest buildings

Apple's doughnut-shaped headquarters in Cupertino, California, nicknamed 'spaceship', was valued at about $4.17 billion in a recent assessment, making it one of the world's most expensive buildings. The 2.8 million-square-foot headquarters was constructed for about $5 billion. Based on the valuation, Apple would be required to pay over $40 million in property taxes per year in California.