The historic Flood Building has completed a full rebrand following Kidder Mathews’ assignment earlier this year to oversee leasing of its multi-tenant office space and property management for the entire building. Located at 870 Market Street, the 12-story, ±300,000-square-foot iconic property is unveiling a refreshed identity in a new website that reflects its legacy while positioning it for San Francisco’s next chapter of downtown recovery.
Construction on the building began in 1902, commissioned by James Clair Flood’s son, James L. Flood, as a tribute to his father. Completed in 1904, it is among the few major downtown structures to withstand the 1906 earthquake and fire. Today, it encompasses ±200,000 square feet of office space and ±100,000 square feet of ground-floor retail. An enduring Market Street landmark, the property has remained under Flood family ownership for more than a century and serves as a cultural and architectural anchor of Union Square.
With its rebrand, the building is debuting the theme Modern Vision, Timeless Values—celebrating its rich history while serving the needs of today’s tenants. With suites ranging from 227 to 5,000 square feet, the building’s offices feature abundant natural light, flexible layouts, and renovated common areas, with direct access to Union Square’s retail, dining, and transit hub.
Additional tenant features include:
- 24-hour security, building access, and onsite management
- An updated tenant lounge with drop-in workspace and conference facilities
- Rentable drop-in workspace and conference rooms at $150 per hour with a 4-hour minimum
- High ceilings with original architectural detailing and operable windows for fresh airflow
- Sweeping city and bay views from upper floors
“The Flood Building is more than a piece of history—it’s a living landmark at the heart of San Francisco,” said Jim Walker, Senior Vice President at Kidder Mathews, who leads the office leasing assignment alongside Scott Vix, CCIM, SIOR; Martin Melbardis; and Kate Schmitz. “Immaculately preserved and modernized where it matters, the building’s story is already here. This rebrand is about telling that story, showcasing its stature, and inviting new tenants to be part of its next chapter as the city looks ahead to the future.”
The rebrand coincides with new investment in the neighborhood. The City of San Francisco recently approved a major redesign of Powell Street and the surrounding plaza, immediately adjacent to the Flood Building. The estimated $40 million project will deliver upgraded pedestrian amenities, lighting, and public gathering spaces—enhancing the broader Union Square experience.
Kidder Mathews’ Lori Coleman, RPA®, Senior Vice President and Market Leader for Northern California, oversees property management for the entire building. “There’s already an incredible community of tenants in the Flood Building,” said Coleman. “With the energy of Union Square’s revitalization and the momentum inside the property itself, this is a place where tenants can truly thrive—and we’re excited to welcome even more companies into that community.”
“As Union Square takes on a bold new look, the Flood Building is evolving right alongside it,” said Karin Flood, President of Flood Corporation. “This rebrand reaffirms its role as an anchor of Market Street and ensures it remains a vital part of the city’s recovery and growth.”
About Kidder Mathews
Kidder Mathews is the largest fully independent commercial real estate firm in the Western U.S., with over 900 professionals in 19 offices across Washington, Oregon, California, Nevada, and Arizona. We offer a complete range of brokerage, appraisal, asset services, consulting, and debt & equity finance services for all property types. Kidder Mathews averages $9 billion in transaction volume, manages more than 53 million square feet of space, and conducts 2,400 appraisal, consulting, and cost segregation assignments annually. For more information, visit kidder.com.
