The Westin Seattle — Event Spaces, Floor Plans & Capacities

1900 5th Ave, Seattle, WA 98101

33 rooms · largest space: Grand Ballroom, 18,030 sq ft1,675 m²

Planning an event in Seattle? The Westin Seattle has 33 meeting and event rooms. The largest space is Grand Ballroom, 18,030 sq ft1,675 m² (divisible into 3 sections). It holds up to 2,000 guests. Capacity figures for every setup style are listed per room below.

Between them, the 33 rooms accommodate theater-style sessions for up to 2,000, seated banquets for 1,580 and standing receptions for 2,000. 8 smaller rooms suit breakouts and board meetings. Per-room dimensions and every published setup figure are listed below.

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Floor plans

Detailed floor plans for The Westin Seattle are published on the venue’s official site.

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Room capacities & dimensions

33 rooms, 40 configurations. Combined and divided set-ups are listed under their room.

Room capacities and dimensions for The Westin Seattle
SpaceCeiling
AdamsPlan this room →525 sq ft49 m²8 ft2.4 m405024652020
BakerPlan this room →378 sq ft35 m²8 ft2.4 m203015351615
BlakelyPlan this room →525 sq ft49 m²8 ft2.4 m405024652020
Cascade Ballroom IIPlan this room →2,600 sq ft242 m²17 ft5.2 m2002751702704060
5 configurations with Cascade Ballroom II
Combined and divided set-ups that include Cascade Ballroom II
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
Cascade BallroomPlan this room →5,200 sq ft483 m²17 ft5.2 m4005803455506084
Cascade Ballroom IPlan this room →2,600 sq ft242 m²17 ft5.2 m2002751702704060
Cascade Ballroom I-APlan this room →840 sq ft78 m²17 ft5.2 m708040802630
Cascade Ballroom I-BPlan this room →840 sq ft78 m²17 ft5.2 m708040802630
Cascade Ballroom I-CPlan this room →840 sq ft78 m²17 ft5.2 m708040802630
Cascade Foyer NorthPlan this room →2,100 sq ft195 m²————250——
Cascade Foyer SouthPlan this room →1,700 sq ft158 m²————120——
DennyPlan this room →357 sq ft33 m²8 ft2.4 m305018401615
Elliott BayPlan this room →2,200 sq ft204 m²—2201801002203039
Elliott Bay ReceptionPlan this room →1,300 sq ft121 m²8 ft2.4 m80100—125——
Fifth Avenue RoomPlan this room →3,444 sq ft320 m²9 ft2.7 m3003802403757887
Glacier PeakPlan this room →324 sq ft30 m²8 ft2.4 m————12—
Grand CrescentPlan this room →1,430 sq ft133 m²9 ft2.7 m110140701553636
Grand FoyerPlan this room →10,500 sq ft975 m²————950——
Grand IPlan this room →5,336 sq ft496 m²20 ft6.1 m43060035055080100
1 configuration with Grand I
Combined and divided set-ups that include Grand I
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
Grand BallroomPlan this room →18,030 sq ft1,675 m²20 ft6.1 m1,5802,0001,2002,000——
Grand IIPlan this room →5,336 sq ft496 m²20 ft6.1 m43060035055080100
Grand IIIPlan this room →7,360 sq ft684 m²20 ft6.1 m60080050078080107
MercerPlan this room →525 sq ft49 m²8 ft2.4 m305024502218
OlympicPlan this room →650 sq ft60 m²8 ft2.4 m607030702628
OrcasPlan this room →525 sq ft49 m²8 ft2.4 m405024652020
PikePlan this room →2,912 sq ft271 m²8 ft2.4 m1902001303005454
PinePlan this room →2,925 sq ft272 m²9 ft2.7 m2602301563005842
Puget Sound RoomPlan this room →2,964 sq ft275 m²10 ft3 m180160602206038
San Juan FoyerPlan this room →2,200 sq ft204 m²————120——
Seattle SuitePlan this room →790 sq ft73 m²8 ft2.4 m———4014—
St. HelensPlan this room →891 sq ft83 m²8 ft2.4 m809648902830
StuartPlan this room →459 sq ft43 m²8 ft2.4 m3040245020—
Vashon IPlan this room →486 sq ft45 m²8 ft2.4 m404030502023
1 configuration with Vashon I
Combined and divided set-ups that include Vashon I
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
VashonPlan this room →1,350 sq ft125 m²8 ft2.4 m110140801454444
Vashon IIPlan this room →864 sq ft80 m²8 ft2.4 m709050852627
Westlake BoardroomPlan this room →500 sq ft46 m²8 ft2.4 m304424402018
Westlake FoyerPlan this room →2,102 sq ft195 m²————220——
WhidbeyPlan this room →525 sq ft49 m²8 ft2.4 m405024652020
Additional spaces (dimensions only) (2)
Additional spaces with published dimensions only at The Westin Seattle
SpaceSq ft / m²Ceiling
Grand Convention OfficePlan this room →170 sq ft16 m²9 ft2.7 m
Grand Registration OfficePlan this room →112 sq ft10 m²8 ft2.4 m

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

Frequently asked questions

How many event rooms does The Westin Seattle have?

The Westin Seattle has 33 rooms. 40 configurations are listed on this page.

What is the largest space at The Westin Seattle?

Grand Ballroom, 18,030 sq ft (divisible into 3 sections): 196 × 92 ft, 1,580 banquet / 2,000 theater.

How many people can The Westin Seattle seat for a banquet?

Up to 1,580 in Grand Ballroom. The next largest room, Cascade Ballroom, seats 400.

Can Grand Ballroom be divided?

Yes. Grand Ballroom divides into 3 sections: Grand I, Grand II, Grand III.

What is the ceiling height at The Westin Seattle?

The highest ceiling is 20 ft, in Grand I.

More event venues near Seattle

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