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220 Montgomery St
San Francisco, CA 94104 Union Square

$65.00 USD/SF/YR

Office Residential For Lease  •  241+ SF

Property Details

  • Property Type Office Residential
  • Year Built 1892
  • Total Building Size 491,624 SF
  • Tenancy Multiple
  • Building Class B
  • Zoning C-3-O
100 Transit Score
100 Walk Score

31 Spaces Available

Name Space Use Size Rent Details
3rd Floor Ste 300 Office 4,747 SF $65.00 USD/SF/YR
- Bright corner suite with exposed brick
- 3 Meeting rooms/offices
- 1 Conference room
- Open areas
- Kitchen
- Space for 32 work stations
- Furnished

  • Date available: Feb 2026
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Space Type: New
3rd Floor Ste 305 Office 3,588 SF $65.00 USD/SF/YR
- New Spec Suite Available Feb 2026
- 3 Meeting Rooms/Private Offices
- 1 Conference Room
- Kitchen
- Open Area with Space for 24 Workstations
- Furnished

  • Date available: Feb 2026
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Space Type: New
3rd Floor Ste 310 Office 1,439 SF Rate Upon Request
With its rich history and legacy of success, the Mills Building offers today’s tenants an inviting and inspiring mix of modern amenities, historic charm, and convenient location in the heart of the Financial District. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors and new on-site conference center.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Built out as: Standard Office
  • Space Type: Relet
3rd Floor Ste 315 Office 681 SF Rate Upon Request
With its rich history and legacy of success, the Mills Building offers today’s tenants an inviting and inspiring mix of modern amenities, historic charm, and convenient location in the heart of the Financial District. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors and new on-site conference center.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Built out as: Standard Office
  • Space Type: Relet
3rd Floor Ste 343 Office 672 SF Rate Upon Request
This suite offers 2 private offices for focused work, a welcoming waiting room for clients or team members, and excellent elevator identity for seamless access. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors and new on-site conference center.

Bask in bright natural light pouring through expansive windows, offering an inspiring environment and serene courtyard views to keep you grounded. Whether you're growing your business or elevating your brand, this office provides the perfect balance of privacy, professionalism, and charm. Located in the core of San Francisco’s Financial District.

  • Date available: Now
  • Lease term: 2 - 5 Years
  • Service type: To Be Determined
  • Built out as: Standard Office
  • Space Type: Relet
3rd Floor Ste 344 Office 1,144 SF Rate Upon Request
A bold workspace with equal parts style and substance. This Mills Building suite merges historic character with modern design: a spacious collaborative zone for lively brainstorming, a private office for laser focus, and sweeping views of the TransAmerica Building to spark your daily hustle. Flooded with natural light, fitted with a handy plumbed sink, and boasting generous storage, it’s a one-of-a-kind setting that pairs big ambitions with everyday convenience—all in the heart of San Francisco’s iconic downtown. Located in the core of San Francisco’s Financial District. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Built out as: Standard Office
  • Space Type: Relet
3rd Floor Ste 346 Office 3,544 SF $26.00 USD/SF/YR
- 2 Private Offices
- Kitchen
- Open Area for Workstations
- Available Now

  • Date available: Now
  • Lease term: 2 - 3 Years
  • Service type: Full Service Gross
  • Built out as: Standard Office
  • Space Type: Relet
3rd Floor Ste 360 Office 3,635 SF $65.00 USD/SF/YR
- 2 Meeting Rooms/Private Offices
- 1 Conference Room
- Open Area with Space for 28 Workstations
- Break Area
- Furnished

  • Date available: Feb 2026
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Space Type: New
4th Floor Ste 333 Pine St Office 4,264 SF $36.00 USD/SF/YR
Private office intensive, 11 private offices, 2 conference rooms. City views.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Built out as: Standard Office
  • Space Type: Relet
4th Floor Ste 406 Office 3,023 SF $60.00 USD/SF/YR
- Brand New Spec Suite Available Jan 2026
- 3 Meeting Rooms/Private Offices
- 1 Conference Room
- Kitchen
- Open Area with Space for 12 Workstations
- 2 Sides of Window-line
- Some Exposed Brick
- Montgomery Street Outlooks
- Furnished

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Space Type: Relet
4th Floor Ste 412 Office 241 SF Rate Upon Request
Located in the core of San Francisco’s Financial District. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors.

  • Date available: Now
  • Lease term: 2 - 5 Years
  • Service type: Negotiable
  • Built out as: Standard Office
  • Space Type: Relet
4th Floor Ste 425 Retail 284 SF Rate Upon Request
Bright, serene, and perfectly private—this single-room office features stunning courtyard views and abundant natural light that fills the space, creating a calm and inspiring environment. Ideal for focused, productive work in a peaceful setting, this open and airy space is your perfect professional retreat. Located in the core of San Francisco’s Financial District. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: To Be Determined
  • Built out as: Standard Retail
  • Space Type: Relet
4th Floor Ste 440 Office 533 SF Rate Upon Request
Experience a newly transformed workspace that artfully combines sophisticated finishes with a bright, open layout designed to elevate creativity and comfort. The abundant natural light cascades through large windows, revealing stunning views of the Transamerica building and infusing the office with an inspiring energy. Despite its central location, the atmosphere remains serene, offering a quiet refuge from the city’s bustle. Impress colleagues and clients alike with excellent elevator identity that speaks to your professional presence from the moment they arrive. This office suite is more than just a workplace—it’s a modern haven where productivity meets undeniable style. Located in the core of San Francisco’s Financial District. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors.

  • Date available: Now
  • Lease term: 2 - 5 Years
  • Service type: Negotiable
  • Built out as: Standard Office
  • Space Type: Relet
4th Floor Ste 469 Office 909 SF Rate Upon Request
Quiet courtyards space, bright, north-facing Located in the core of San Francisco’s Financial District. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors.

  • Date available: Now
  • Lease term: 2 - 5 Years
  • Service type: Negotiable
  • Built out as: Standard Office
  • Space Type: Relet
4th Floor Ste 480 Office 911 SF Rate Upon Request
  • Date available: Now
  • Lease term: Negotiable
  • Service type: To Be Determined
  • Space Type: Relet
5th Floor Ste 500 Office 20,000-40,951 SF Rate Upon Request
Have access to a new building conference center, tenant lounge, showers, and locker facility. Suite 500 is a full-floor professional service suite with 87 private offices (67 on exterior), a large boardroom, three conference rooms, a training room, an open kitchen, and break area, multiple restroom cores, operable windows for fresh air circulation, plus full AC and heating system. Located in the core of San Francisco’s Financial District. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: To Be Determined
  • Built out as: Professional Services
  • Space Type: Relet
6th Floor Ste 605 Office 2,929 SF $60.00 USD/SF/YR
- Brand New Spec Suite Available Jan 2026
- 2 Meeting Rooms/Private Offices
- 1 Conference Room
- Open Kitchen Area
- Good Natural Light
- Room for 12 Workstations
- Furnished

  • Date available: Jan 2026
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Space Type: New
6th Floor Ste 612 Office 1,003 SF Rate Upon Request
Bright, Spacious, and Private – The Perfect Office Awaits!

Step into a large, open workspace designed to inspire productivity and collaboration. This office boasts abundant natural light, creating a vibrant yet peaceful environment. A private office or conference room offers the flexibility you need – perfect for meetings, focused work, or client calls. Enjoy the quiet, professional atmosphere that makes getting things done effortless. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors.

  • Date available: Now
  • Lease term: 2 - 5 Years
  • Service type: Negotiable
  • Built out as: Standard Office
  • Space Type: Relet
6th Floor Ste 650 Office 12,000 SF Rate Upon Request
Suite 650 is a 2nd generation creative space with exposed brick, high ceilings, above-standard finishes, an open kitchen/break area, six private offices, two conference rooms, operable windows, and abundant natural light. Located in the core of San Francisco’s Financial District. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: To Be Determined
  • Built out as: Standard Office
  • Space Type: Relet
6th Floor Ste 692 Office 1,697 SF Rate Upon Request
Located in the core of San Francisco’s Financial District. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Built out as: Standard Office
  • Space Type: Relet
6th Floor Ste 695 Office 991 SF Rate Upon Request
Enhance your business with this newly updated office suite, featuring a striking glass-fronted conference room, spacious private office, and convenient plumbed sink. Greet clients in the inviting reception area, take in serene courtyard views, and enjoy the ample storage to keep operations running smoothly. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: To Be Determined
  • Built out as: Standard Office
  • Space Type: Relet
7th Floor Ste 700 Office 40,642 SF Rate Upon Request
Located in the core of San Francisco’s Financial District. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: To Be Determined
  • Built out as: Standard Office
  • Space Type: Relet
9th Floor Ste 905 Office 2,923 SF $60.00 USD/SF/YR
- Brand New Spec Suite Available Jan 2026
- 2 Meeting Rooms/Private Offices
- 1 Conference Room
- Open Kitchen Area
- Operable Windows
- Room for 12 Workstations
- Furnished

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Space Type: Relet
9th Floor Ste 990 Office 1,754 SF Rate Upon Request
This office suite offers a professional and spacious layout designed for efficiency and comfort. With four private offices, a large conference room, and a welcoming reception/waiting area, it provides everything a team needs to work productively. Expansive windows fill the space with natural light, creating a bright and inviting atmosphere. Ample storage ensures a clutter-free workspace, keeping everything organized and within reach. Perfect for businesses that need a functional, polished environment with room to grow. Located in the core of San Francisco’s Financial District. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Built out as: Standard Office
  • Space Type: Relet
10th Floor Ste 1000 Office 4,826 SF $60.00 USD/SF/YR
- Brand New Spec Suite Available Dec 2025
- High Ceilings
- 4 Meeting Rooms/Private Offices
- 1 Conference Room
- Open Kitchen Area
- Open Area for Workstations
- Double Door Elevator Identity
- Excellent Montgomery Street Window-line
- Access to New 10th Floor Tenant Lounge
- Furnished

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Space Type: New
10th Floor Ste 1019 Office 1,634 SF $52.00 USD/SF/YR
This suite boasts an array of appealing features, including new finishes and a bright, spacious layout. It offers two modern glass-fronted offices and one private corner office, all complemented by soaring 12-foot ceilings. The space is enhanced with a convenient kitchenette, excellent storage options, and an abundance of natural light. Additionally, its large open area provides great versatility for a variety of uses. The 10th floor suites benefit from the 10th floor tenant lounge, with wifi and coffee service available 24/7. Located in the core of San Francisco’s Financial District. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Space Type: Relet
10th Floor Ste 1020 Office 1,191 SF $48.00 USD/SF/YR
This updated suite offers a bright and versatile workspace, featuring one private office, abundant natural light, and a spacious open area. It includes a conference room, views of the Financial District, and serene courtyard outlooks to enhance the environment. The 10th floor suites benefit from the 10th floor tenant lounge, with Wi-Fi and coffee service available 24/7. Located in the core of San Francisco’s Financial District. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Built out as: Standard Office
  • Space Type: Relet
10th Floor Ste 1060 Office 5,396 SF $50.00 USD/SF/YR
- Creative Suite Available Now
- Elevator Identity
- 2 Meeting Rooms
- 1 Conference Room
- Open Kitchen Area
- Open Area with Space for 38 Workstations
- Adjacent to New 10th Floor Tenant Lounge
- Exposed Ceiling and Exposed Brick
- Furnished

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Built out as: Standard Office
  • Space Type: Relet
10th Floor Ste 1070 Office 325 SF $54.00 USD/SF/YR
The suite includes new features like free high-speed Wi-Fi for easy connectivity, a spacious open layout, and crown molding that adds a refined touch. It also has a well-functioning elevator with a unique identity and is filled with bright natural light, creating a pleasant atmosphere. The 10th floor suites benefit from the 10th floor tenant lounge, with wifi and coffee service available 24/7. Located in the core of San Francisco’s Financial District. Updated lobby, tenant lounge, and state-of-the-art conference center. Abundant natural light with beautiful interiors.

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Built out as: Standard Office
  • Space Type: Relet
12nd Floor Ste 1200 Office 6,027 SF $65.00 USD/SF/YR
- Brand New Creative Spec Floor Available May 2026
- 4 Meeting Rooms/Private Offices
- 1 Boardroom
- Exposed Ceiling and Brick
- Great Natural Light
- Furnished

  • Date available: May 2026
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Space Type: Relet
17th Floor Ste 1700 Office 5,928 SF $62.00 USD/SF/YR
- Furnished Full Floor Opportunity Available Now
- 4 Meeting Rooms/Private Offices
- Kitchen
- Ensuite Restrooms
- 3 Sides of Window-line
- Bay Views

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Space Type: Relet

Description

The Mills Building is a combination of historic prominence and modern amenities in San Francisco’s Financial District. With its rich history and legacy of success, this landmark offers today’s tenants an inviting and inspiring mix of modern amenities, historic charm, and a convenient location in the heart of the Financial District. As San Francisco’s last remaining example of the early 20th-century Chicago School architectural style, this destination has been continuously owned and operated by The Swig Company since 1954. It has been meticulously renovated over the years, including upgrades to the building systems, main lobby and common areas, and tenant amenities. 
        
Offering an elevated workplace experience, The Mills Building offers renovations that provide highly efficient and effective office solutions for a broad range of businesses. The new updates delivered modern updates to the lobby, as well as a new amenity center featuring expanded bike storage, a state-of-the-art conference center, a tenant lounge, and a wellness area with showers and lockers. This office destination echoes a commitment to environmental stewardship, positive social impact, and tenant well-being that creates value for tenants. 
       
The Mills Building is situated in the heart of downtown on one of the city’s most vibrant retail and business corridors, with abundant parking and valet. Tenants have easy access to the Montgomery BART and California and Montgomery MUNI Stations for those comminuting from the neighboring Bay Area communities. A host of dining, refreshment, fitness, and service options surrounds this central office’s prominent and accessible location in San Francisco proper. Discover the perfect blend of history, innovation, and convenience at The Mills Building, where businesses thrive in the heart of San Francisco’s dynamic Financial District.

Highlights

Embark on modern office amenities and contemporary ambience with a rich variety of large and small suites in a unique architectural setting.
Impeccably renovated building with an updated lobby and new conference center, bike storage, wellness room, and shower/locker facilities.
The Mills Building is one of the first three steel-frame buildings in San Francisco and remains essentially indistinguishable from its original state.
Identifiable presence with ground-floor retail on Montgomery Street joins neighboring amenities such as Blue Bottle Coffee, Equinox, and FedEx.
Be amazed by high ceilings, abundant natural light, robust data infrastructure, beautiful interiors, and a LEED Platinum/WELL Health-Safety rating.
Centrally located in the Financial District, a block from the Montgomery Street BART and MUNI Stations neighboring SOMA, Chinatown, and Union Square.

Property Flyers

Green Rating

EnergyStar Yes

Amenities

  • 24 Hour Access
  • Atrium
  • Controlled Access
  • Concierge
  • Conferencing Facility
  • Courtyard
  • Fitness Center
  • Property Manager on Site
  • Restaurant
  • Security System
  • Signage
  • Energy Star Labeled
  • Wheelchair Accessible
  • Reception
  • Storage Space
  • Car Charging Station
  • Smoke Detector

Public Transportation

Commuter RailDriveWalkDistance
San Francisco 4Th & King (Caltrain - Caltrain (Caltrain)) 3 min - 1.3 mi
San Francisco Caltrain Station Southbound (Express - Caltrain (Caltrain), Limited - Caltrain (Caltrain), Local Weekday - Caltrain (Caltrain), Local Weekend - Caltrain (Caltrain)) 3 min - 1.4 mi
Transit/SubwayDriveWalkDistance
California St & Montgomery St (CALIFORNIA STREET CABLE CAR - San Francisco Municipal Transportation Agency) 1 min 2 min 0.1 mi
California And Montgomery (California Street Cable Car - San Francisco Municipal Railway (MUNI Metro)) 1 min 2 min 0.1 mi
California And Kearny (California Street Cable Car - San Francisco Municipal Railway (MUNI Metro), CALIFORNIA STREET CABLE CAR - San Francisco Municipal Railway (MUNI Metro)) 1 min 3 min 0.2 mi
California And Sansome (California Street Cable Car - San Francisco Municipal Railway (MUNI Metro), CALIFORNIA STREET CABLE CAR - San Francisco Municipal Railway (MUNI Metro)) 0 min 4 min 0.2 mi
Market And 2Nd (F Market - San Francisco Municipal Railway (MUNI Metro)) 1 min 4 min 0.2 mi
AirportDriveWalkDistance
San Francisco International 22 min - 14.4 mi
Metro Oakland International 28 min - 18.9 mi

Parking Details

Parking Available: Yes
Reserved: No
Type: Surface
Included in Rent: Yes
Mark Geisreiter 628-241-0135 Newmark
Mark Geisreiter 628-241-0135 Newmark