The St. Regis San Francisco — Event Spaces, Floor Plans & Capacities

125 3rd St, San Francisco, CA 94103

16 rooms · largest space: Gallery Ballroom, 4,640 sq ft431 m²

With 16 event rooms, The St. Regis San Francisco is a flexible choice for meetings and celebrations in San Francisco. The largest space is Gallery Ballroom, 4,640 sq ft431 m² (divisible into 2 sections). It holds up to 400 guests. Full capacity details for each room are below.

Plan an event in Gallery Ballroom: open a free to-scale layout seating 240 at round tables in its 58 × 80 ft footprint at floors.live/start — no account needed.

Between them, the 16 rooms accommodate theater-style sessions for up to 400, seated banquets for 300 and standing receptions for 350. 3 smaller rooms suit breakouts and board meetings. Per-room dimensions and every published setup figure are listed below.

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Unverified listing — compiled from The St. Regis San Francisco’s published information. Venue staff can verify capacities and setups free: floors.live/venues/us/california/san-francisco/the-st-regis-san-francisco/?claim=1.

Floor plans

Detailed floor plans for The St. Regis San Francisco are published on the venue’s official site.

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Room capacities & dimensions

16 rooms, 19 configurations. Combined and divided set-ups are listed under their room.

Room capacities and dimensions for The St. Regis San Francisco
SpaceSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
Collections IPlan this room →437 sq ft41 m²8.5 ft2.6 m305018401012
1 configuration with Collections I
Combined and divided set-ups that include Collections I
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
CollectionsPlan this room →1,380 sq ft128 m²8.5 ft2.6 m100130901003636
Collections IIPlan this room →943 sq ft88 m²8.5 ft2.6 m607254602424
ConservatoryPlan this room →2,080 sq ft193 m²12 ft3.7 m1201641001504444
Gallery IPlan this room →2,494 sq ft232 m²16.9 ft5.2 m1501701202003238
1 configuration with Gallery I
Combined and divided set-ups that include Gallery I
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
Gallery BallroomPlan this room →4,640 sq ft431 m²16.9 ft5.2 m3004002403504450
Gallery IIPlan this room →2,146 sq ft199 m²16.9 ft5.2 m1301701201503236
Impressionist IPlan this room →1,058 sq ft98 m²11.5 ft3.5 m708863752628
1 configuration with Impressionist I
Combined and divided set-ups that include Impressionist I
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
ImpressionistPlan this room →1,518 sq ft141 m²11.5 ft3.5 m100130901154040
Impressionist IIPlan this room →460 sq ft43 m²11.5 ft3.5 m305018401012
ModernistPlan this room →1,152 sq ft107 m²10.5 ft3.2 m7010054802424
Muse BoardroomPlan this room →960 sq ft89 m²8.8 ft2.7 m————20—
The WilliamsPlan this room →1,929 sq ft179 m²—50884210036—
VitrinePlan this room →2,793 sq ft259 m²8.5 ft2.6 m6070487532—
Yerba Buena TerracePlan this room →3,600 sq ft334 m²16 ft4.9 m2503001602503244
Additional spaces (dimensions only) (4)
Additional spaces with published dimensions only at The St. Regis San Francisco
SpaceSq ft / m²Ceiling
Level Four FoyerPlan this room →2,184 sq ft203 m²8 ft2.4 m
Level Three FoyerPlan this room →1,386 sq ft129 m²7.9 ft2.4 m
Sculpture IPlan this room →2,205 sq ft205 m²16.9 ft5.2 m
Sculpture IIPlan this room →1,083 sq ft101 m²10 ft3 m

Figures from published venue data; blank cells mean the venue hasn’t published that number. Verify final counts with the venue.

Sizing another room? Try the event room capacity calculator or the floor plan scale converter, or compare the largest event spaces in San Francisco.

Frequently asked questions

What is the floor plan of The St. Regis San Francisco?

The St. Regis San Francisco has 16 rooms. The largest space is Gallery Ballroom, 4,640 sq ft (58 × 80 ft). Every room's dimensions and seating capacity by setup are listed on this page. The St. Regis San Francisco's own floor plans are published on its website, linked from this page.

How many event rooms does The St. Regis San Francisco have?

The St. Regis San Francisco has 16 rooms. 19 configurations are listed on this page.

What is the largest space at The St. Regis San Francisco?

Gallery Ballroom, 4,640 sq ft (divisible into 2 sections): 58 × 80 ft, 300 banquet / 400 theater.

How many people can The St. Regis San Francisco seat for a banquet?

Up to 300 in Gallery Ballroom. The next largest room, Yerba Buena Terrace, seats 250.

Can Gallery Ballroom be divided?

Yes. Gallery Ballroom divides into 2 sections: Gallery I, Gallery II.

What is the ceiling height at The St. Regis San Francisco?

The highest ceiling is 16.9 ft, in Gallery I.

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