Avison Young just released an eye-opening report this morning that summarizes how high rents are these days for 100 top-tier buildings in the CBD, as well as what's up for grabs. In its Tier 1 building group, average low-rise starting rents start at $66.50, full service, and surge to $82 for high-rise product (floors 16 and up). The Ferry Building (pictured) starts at $85/SF, with 82k SF of direct space available. One Market's 42-floor Spear Tower (which Google is leasing a big chunk of) asks $91/SF for upper floors, where 25k SF is available.

Meanwhile, 101 Cal has the most space available out of the Tier 1 group, at 222k SF mostly above floor 16. There high-rise space in the 48-story tower costs around $85/SF. Out of the top-tier product, 8.3% is available. For Tier 2 buildings, which include 650 Cal and 525 Market, 14.5% is available and high-rise space starts at $71/SF, on average.