Flood Building

04/11/2025

“Homebase has been in The Flood Building for over 30 years. The physical space of the building is amazing. Entering the lobby inspires a sense of wonder. You are immediately greeted by a small museum that displays the incredible history of the 100+ year old building. It is fascinating to look at how the building, and downtown San Francisco, have changed throughout the decades.

We especially love the location of The Flood Building. Right above Powell Street Transit Station makes commuting to and from the office easy. Staff regularly walk to Giant’s games or The Orpheum Theater after work, taking in all that downtown has to offer while having a central hub to store belongings or use the restroom.

The staff at The Flood Building are friendly and helpful. From the security in the lobby to the building managers on the 12th floor, everyone has been helpful and welcoming each day we come in. Extra effort really makes the building and its staff stand out.

Whether it is Max decorating the lobby for the holidays, Sheila, Sandra, and Jeanette throwing a building happy hour party at the end of the year, or Andrew helping us put in a new countertop, we always feel comfortable in the building. The Flood Building truly is our homebase in San Francisco for a staff that has spread out over the Bay Area.”
-James Roop

Contact us today for a tour.
www.floodbuilding.com — click “availability” to see what’s ready for you!

04/08/2025

“In an era of large corporate rental offices that are indifferent and rude to nuanced requests, it has been a pleasure to work with the Flood Management team. Every time I have gone to them I have been heard and have come away with the best solution. It is why even after our lease expired and we were moving, we kept an office with them.An A+ experience all around.” — Dilraj Kahai, Managing Partner, 21Tech, LLC

Since 1904, the National Historic Landmark Flood Building has been at the center of San Francisco business community.

With Muni, BART, the iconic F-Market Streetcar Line and the world famous Cable Cars right at our front door, and must steps away from Union Square with ample parking, entertainment, night life and a vibrant restaurant and bar scene, 870 Market is at the crossroads for your 2025 short-and-long term office leasing needs.

Spaces available from 1650 square feet all the way up to 3500 square feet.

Adaptable.
Scalable.
Flexible.
Affordable.

Contact us today for a tour.
www.floodbuilding.com — “availability”

03/01/2025

“If three tenants were to hold hands and say, ‘Hey, let’s go back to Powell Street,’ then all of a sudden the foot traffic does begin to build,” Karin Flood, who runs the historic Flood Building at the corner of Market and Powell streets that’s been in her family for generations, told me.

SF leaders and taxpayers have expended significant political and financial capital to revitalize downtown. It’s time for businesses to do their part.

02/24/2025

“Several months ago our hearts led us to SF and we were also particularly drawn for curious reasons to the nostalgia and historic nature of Flood building, its tall ceilings and marbled halls and stairs, what a special place. The location is fantastic as well, right in the hub of transportation in downtown, BART, MUNI, Powell St. and the famed Cable Cars too.

I really love all of the staff here at the Flood building, they are dedicated almost as part of a cause, and so friendly from the top down starting with Sheila Marko. She welcomed us and helped us get a great space. Working here on a daily basis, it’s like being at a high quality and service minded hotel that really cares, and who are super helpful and accommodating.

The security staff led by Max are great and friendly and protect the place. I am so pleased with the outcome of our office suite, which has been slightly modified (as per some of our specs) by the building and carpenter crew led by Andrew who is competent in his trade.

This place is the office that cares. They all do a fantastic job and make it all work. I have nothing but compliments to the Flood Building office and management. We are all rooting for the success of San Francisco in an upturning economy, and it is a pleasure doing business here. It has enhanced our existing companies credibility and ability to find and secure business.” — Grant Johnson, Prism Engineering

Since 1904, the National Historic Landmark Flood Building has been at the center of San Francisco business community.

With Muni, BART, the iconic F-Market Streetcar Line and the world famous Cable Cars right at our front door, and must steps away from Union Square with ample parking, entertainment, night life and a vibrant restaurant and bar scene, 870 Market is at the crossroads for your 2025 short-and-long term office leasing needs.

Spaces available from 1650 square feet all the way up to 3500 square feet.

Adaptable.
Scalable.
Flexible.
Affordable.

Contact us today for a tour.
www.floodbuilding.com

02/12/2025

Welcome! The landmark Flood Building at Powell & Market salutes and celebrates all the players and teams and fans in San Francisco for the NBA All Stars! What a lovely Valentine for The City!

02/10/2025

Ahoy and thanks to Timothy Karoff, Dan Gentile, Melissa Cho and Kendra Smith at SFGATE for the nice shout out about our historic office home -- the landmark Flood Building -- en route to find even more hearts in-and-around Union Square, San Francisco!

https://www.sfgate.com/sf-culture/article/tony-bennett-heart-sf-hotel-20149269.php

"The quest started off with a good omen as I passed a woman dressed entirely in red. Guided by the Map of Hearts, which locates those of the sculptures that are on public display around the Bay Area, I made my first stop in the historic Flood Building’s gorgeous lobby, which serves as a warm pass-through from Market to Ellis Street, and is also the home of Jessica Nixon’s “Alive with Color,” an SF-themed heart from 2020."

This week's Fogcutter includes a look at the empty promises of tech networking, plus an art walk through San Francisco's Tenderloin.

02/10/2025

“The Flood Building has been the administrative home of Robert Moses’ KIN since 2008, providing us with a central landmark, beautifully maintained, and secure San Francisco location for our non-profit arts organization. For over 13 years, we’ve been proud to welcome partners, collaborators, funders, and staff to our space at the Flood Building. This summer, the Flood Building generously welcomed us to work in residence in the vacated ground floor space overlooking the historic Cable Car turnaround at the base of Powell at Market Street. This residency has provided Robert Moses’ KIN with an incredible venue for increasing our visibility to the City and its visitors, who are welcome to watch for free as we rehearse and create new work for our audiences. The Flood Building has played a vital role in the 25+ year history for Robert Moses’ KIN, and is the home from which we are re-introducing the public to live art.”
— Robert Moses, Artistic Director of Robert Moses’ KIN


Since 1904, the National Historic Landmark Flood Building has been at the center of San Francisco business community.

With Muni, BART, the iconic F-Market Streetcar Line and the world famous Cable Cars right at our front door, and must steps away from Union Square with ample parking, entertainment, night life and a vibrant restaurant and bar scene, 870 Market is at the crossroads for your 2025 short-and-long term office leasing needs.

Spaces available from 1650 square feet all the way up to 3500 square feet.

Adaptable.
Scalable.
Flexible.
Affordable.

Contact us today for a tour.
www.floodbuilding.com

01/31/2025

The Flood Building, where history is serious business.

Step into the lobby at 870 Market Street and take a stroll down memory lane with our museum curated exhibit highlighting 120 years at the center of San Francisco life. Wars, earthquakes, economic ups and downs, the “Maltese Falcon” many, many successful businesses — the landmark Flood Building has seen it all.

Make an historic choice for your 2025 office needs. floodbuilding.com

01/22/2025

The National Historic Landmark Flood Building: the tenants speak.

“The management defines the face and the spirit of the place. They are excellent at leasing and really caring specialists. Often, it takes a lot of courage to move into a new building . For me, Sheila Marko and her team were listeners, consultants, therapists, and a welcoming leasing agent. They really make people feel great and make this building a home.

Before renting an office at the Flood building, I rented a much larger office with its own bathroom in another building downtown. The management there did nothing for the tenants, they only raised and collected the rent. The whole building was shabby and neglected. Things are different here. The building looks and feels like an antique item, carefully cleaned, repaired, and maintained, like a vintage car which runs well and amazes people with its functionality and beauty. They even hired a crew to sort out the trash, separating recyclables.

There are handicapped accessible bathrooms, sanitizer stations, the corridors are clean. Everything works well and people working here look happy and content: the security guards, the janitors, the engineers, and tenants, of course. The management is always available and responds promptly to the tenants’ every need. They care: This is a good place. “ – Svetlana Shirinova, Attorney-At-Law

Since 1904, the National Historic Landmark Flood Building has been at the center of San Francisco business community.

With Muni, BART, the iconic F-Market Streetcar Line and the world famous Cable Cars right at our front door, and just steps away from Union Square with ample parking, entertainment, night life and a vibrant restaurant and bar scene, 870 Market is at the crossroads for your 2025 short-and-long term office leasing needs.

Spaces available from 1650 square feet all the way up to 3500 square feet.

Adaptable.
Scalable.
Flexible.
Affordable.

Contact us today for a tour.
www.floodbuilding.com

01/14/2025

The landmark Flood Building welcomes this 2025 J.P. Morgan Healthcare Conference to San Francisco and the Heart ❤️ of The City, Union Square!
floodbuilding.com

01/06/2025

“Our first office in the Flood Building was in 2001. Over the next 17 years we grew into bigger spaces and then went ‘virtual’ a few years back. COVID reinforced the idea of continued connections so we returned to the classic convenience of 870 Market Street in the heart of Union Square. It’s a Cable Car ride to the Bay and a BART ride to SFO which means easy connections to the rest of Califorrnia, and the World. The Flood Building is family and they’ve helped us grow.” — David Perry, David Perry & Associates Inc.

Since 1904, the National Historic Landmark Flood Building has been at the center of San Francisco business community.

With Muni, BART, the iconic F-Market Streetcar Line and the world famous Cable Cars right at our front door, and just steps away from Union Square with ample parking, entertainment, night life and a vibrant restaurant and bar scene, 870 Market is at the crossroads for your 2025 short-and-long term office leasing needs.

Spaces available from 1650 square feet all the way up to 3500 square feet.

Adaptable.
Scalable.
Flexible.
Affordable.

Contact us today for a tour.
www.floodbuilding.com