Before the pandemic, San Francisco’s California Street was home to some of the world’s most valuable commercial real estate. The corridor runs through the heart of the city’s financial district and is lined with offices for banks and other companies that help fuel the global tech economy.

One building, a 22-story glass and stone tower at 350 California Street, was worth around $300 million in 2019, according to office broker estimates.

That building now is for sale, with bids due soon. They are expected to come in at about $60 million, commercial real-estate brokers say. That’s an 80% decline in value in just four years.