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17

Event Rooms

17628 SQ FT

Total Event Space

500

Capacity Largest Space

15

Breakout Rooms
Capacity Chart | Floor Plans | Equipments and Services
Current Health Orders
Due to current Contra Costa County health orders, all meeting and event attendees must show proof of vaccination or a negative COVID test within the past 3 days prior to admittance.
California Ballroom - Banquet Set-Up

Meeting and Events

Treat your guests to a perfectly crafted meal prepared by our experienced staff of caterers.

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Explore any of our 18 unique meeting rooms, totaling up to over 16,000 sq. ft. of event space!
Stay connected with complimentary wireless access in all meeting rooms.
Take advantage of high quality A/V equipment to add a wow factor to your presentation.
Please advise your Catering Sales Manager if you would like to incorporate any safety guidelines.
Menu Planning for your next event - please contact one of our specialists today. Learn More
Ballroom - Wedding Reception

Weddings and Occasions

Get in touch with our magnificent wedding planning team to organize the wedding of your dreams.

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Learn about our customized catering services to craft the perfect dinner for your reception. Learn More
The California Ballroom can be transformed into the perfect backdrop for your dream wedding!
Special packages are available to streamline the planning process for weddings and other events.
Please advise your Catering Sales Manager if you would like to incorporate any safety guidelines.
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Manage event details, make real-time requests and connect with our staff - from the palm of your hand.

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Please note: all room sizes are approximate.

Feet Meters
Meeting Room Dimensions (LxWxH) Area (sq.ft) Theater Schoolroom Conference U-Shape Reception Banquet
California Ballroom 73x73x13 5329 500 300 - - 500 400
Salon A 24x31x13 744 70 30 30 27 75 50
Salon B 24x31x13 744 70 30 30 27 75 50
Salon C 24x31x13 744 70 30 30 27 75 50
Salon D 24x31x13 744 70 30 30 27 75 50
Salon E 24x31x13 744 70 30 30 27 75 50
Salon F 24x31x13 744 70 30 30 27 75 50
Santa Rosa 36x22x8 792 60 30 24 24 60 40
Sacramento 36x22x8 792 60 30 24 24 60 40
San Jose 31x20x8 620 30 20 20 18 60 30
Contra Costa Ballroom 94x44x8 4136 250 120 - - 350 23
Contra Costa 1 68x44x8 2992 100 90 50 - 200 180
Contra Costa II 40x30x8 1200 100 54 40 32 80 60
Santa Clara 24x12.5x- 300 - - 10 - - -
Santa Catalina 24x12.5x- 300 - - 10 - - -
San Carlos 15.5x12.8x- 198.4 - - 6 - - -
San Francisco 15.5x12.8x- 198.4 - - 6 - - -
Santa Cruz 24x12.5x8 300 - - 10 - - -
San Diego 15.5x12.8x8 198.4 - - 6 - - -
California Ballroom
Dimensions (LxWxH)
73x73x13
Area (sq.ft)
5329
Theater
500
Schoolroom
300
Conference
-
U-Shape
-
Reception
500
Banquet
400
Salon A
Dimensions (LxWxH)
24x31x13
Area (sq.ft)
744
Theater
70
Schoolroom
30
Conference
30
U-Shape
27
Reception
75
Banquet
50
Salon B
Dimensions (LxWxH)
24x31x13
Area (sq.ft)
744
Theater
70
Schoolroom
30
Conference
30
U-Shape
27
Reception
75
Banquet
50
Salon C
Dimensions (LxWxH)
24x31x13
Area (sq.ft)
744
Theater
70
Schoolroom
30
Conference
30
U-Shape
27
Reception
75
Banquet
50
Salon D
Dimensions (LxWxH)
24x31x13
Area (sq.ft)
744
Theater
70
Schoolroom
30
Conference
30
U-Shape
27
Reception
75
Banquet
50
Salon E
Dimensions (LxWxH)
24x31x13
Area (sq.ft)
744
Theater
70
Schoolroom
30
Conference
30
U-Shape
27
Reception
75
Banquet
50
Salon F
Dimensions (LxWxH)
24x31x13
Area (sq.ft)
744
Theater
70
Schoolroom
30
Conference
30
U-Shape
27
Reception
75
Banquet
50
Santa Rosa
Dimensions (LxWxH)
36x22x8
Area (sq.ft)
792
Theater
60
Schoolroom
30
Conference
24
U-Shape
24
Reception
60
Banquet
40
Sacramento
Dimensions (LxWxH)
36x22x8
Area (sq.ft)
792
Theater
60
Schoolroom
30
Conference
24
U-Shape
24
Reception
60
Banquet
40
San Jose
Dimensions (LxWxH)
31x20x8
Area (sq.ft)
620
Theater
30
Schoolroom
20
Conference
20
U-Shape
18
Reception
60
Banquet
30
Contra Costa Ballroom
Dimensions (LxWxH)
94x44x8
Area (sq.ft)
4136
Theater
250
Schoolroom
120
Conference
-
U-Shape
-
Reception
350
Banquet
23
Contra Costa 1
Dimensions (LxWxH)
68x44x8
Area (sq.ft)
2992
Theater
100
Schoolroom
90
Conference
50
U-Shape
-
Reception
200
Banquet
180
Contra Costa II
Dimensions (LxWxH)
40x30x8
Area (sq.ft)
1200
Theater
100
Schoolroom
54
Conference
40
U-Shape
32
Reception
80
Banquet
60
Santa Clara
Dimensions (LxWxH)
24x12.5x-
Area (sq.ft)
300
Theater
-
Schoolroom
-
Conference
10
U-Shape
-
Reception
-
Banquet
-
Santa Catalina
Dimensions (LxWxH)
24x12.5x-
Area (sq.ft)
300
Theater
-
Schoolroom
-
Conference
10
U-Shape
-
Reception
-
Banquet
-
San Carlos
Dimensions (LxWxH)
15.5x12.8x-
Area (sq.ft)
198.4
Theater
-
Schoolroom
-
Conference
6
U-Shape
-
Reception
-
Banquet
-
San Francisco
Dimensions (LxWxH)
15.5x12.8x-
Area (sq.ft)
198.4
Theater
-
Schoolroom
-
Conference
6
U-Shape
-
Reception
-
Banquet
-
Santa Cruz
Dimensions (LxWxH)
24x12.5x8
Area (sq.ft)
300
Theater
-
Schoolroom
-
Conference
10
U-Shape
-
Reception
-
Banquet
-
San Diego
Dimensions (LxWxH)
15.5x12.8x8
Area (sq.ft)
198.4
Theater
-
Schoolroom
-
Conference
6
U-Shape
-
Reception
-
Banquet
-
Meeting Room Dimensions (LxWxH) Area (sq.mt) Theater Schoolroom Conference U-Shape Reception Banquet
California Ballroom 22.2x22.2x4 495.1 500 300 - - 500 400
Salon A 7.3x9.4x4 69.1 70 30 30 27 75 50
Salon B 7.3x9.4x4 69.1 70 30 30 27 75 50
Salon C 7.3x9.4x4 69.1 70 30 30 27 75 50
Salon D 7.3x9.4x4 69.1 70 30 30 27 75 50
Salon E 7.3x9.4x4 69.1 70 30 30 27 75 50
Salon F 7.3x9.4x4 69.1 70 30 30 27 75 50
Santa Rosa 11x6.7x2.4 73.6 60 30 24 24 60 40
Sacramento 11x6.7x2.4 73.6 60 30 24 24 60 40
San Jose 9.4x6.1x2.4 57.6 30 20 20 18 60 30
Contra Costa Ballroom 28.6x13.4x2.4 384.2 250 120 - - 350 23
Contra Costa 1 20.7x13.4x2.4 278 100 90 50 - 200 180
Contra Costa II 12.2x9.1x2.4 111.5 100 54 40 32 80 60
Santa Clara 7.3x3.8x- 27.9 - - 10 - - -
Santa Catalina 7.3x3.8x- 27.9 - - 10 - - -
San Carlos 4.7x3.9x- 18.4 - - 6 - - -
San Francisco 4.7x3.9x- 18.4 - - 6 - - -
Santa Cruz 7.3x3.8x2.4 27.9 - - 10 - - -
San Diego 4.7x3.9x2.4 18.4 - - 6 - - -
California Ballroom
Dimensions (LxWxH)
22.2x22.2x4
Area (sq.mt)
495.1
Theater
500
Schoolroom
300
Conference
-
U-Shape
-
Reception
500
Banquet
400
Salon A
Dimensions (LxWxH)
7.3x9.4x4
Area (sq.mt)
69.1
Theater
70
Schoolroom
30
Conference
30
U-Shape
27
Reception
75
Banquet
50
Salon B
Dimensions (LxWxH)
7.3x9.4x4
Area (sq.mt)
69.1
Theater
70
Schoolroom
30
Conference
30
U-Shape
27
Reception
75
Banquet
50
Salon C
Dimensions (LxWxH)
7.3x9.4x4
Area (sq.mt)
69.1
Theater
70
Schoolroom
30
Conference
30
U-Shape
27
Reception
75
Banquet
50
Salon D
Dimensions (LxWxH)
7.3x9.4x4
Area (sq.mt)
69.1
Theater
70
Schoolroom
30
Conference
30
U-Shape
27
Reception
75
Banquet
50
Salon E
Dimensions (LxWxH)
7.3x9.4x4
Area (sq.mt)
69.1
Theater
70
Schoolroom
30
Conference
30
U-Shape
27
Reception
75
Banquet
50
Salon F
Dimensions (LxWxH)
7.3x9.4x4
Area (sq.mt)
69.1
Theater
70
Schoolroom
30
Conference
30
U-Shape
27
Reception
75
Banquet
50
Santa Rosa
Dimensions (LxWxH)
11x6.7x2.4
Area (sq.mt)
73.6
Theater
60
Schoolroom
30
Conference
24
U-Shape
24
Reception
60
Banquet
40
Sacramento
Dimensions (LxWxH)
11x6.7x2.4
Area (sq.mt)
73.6
Theater
60
Schoolroom
30
Conference
24
U-Shape
24
Reception
60
Banquet
40
San Jose
Dimensions (LxWxH)
9.4x6.1x2.4
Area (sq.mt)
57.6
Theater
30
Schoolroom
20
Conference
20
U-Shape
18
Reception
60
Banquet
30
Contra Costa Ballroom
Dimensions (LxWxH)
28.6x13.4x2.4
Area (sq.mt)
384.2
Theater
250
Schoolroom
120
Conference
-
U-Shape
-
Reception
350
Banquet
23
Contra Costa 1
Dimensions (LxWxH)
20.7x13.4x2.4
Area (sq.mt)
278
Theater
100
Schoolroom
90
Conference
50
U-Shape
-
Reception
200
Banquet
180
Contra Costa II
Dimensions (LxWxH)
12.2x9.1x2.4
Area (sq.mt)
111.5
Theater
100
Schoolroom
54
Conference
40
U-Shape
32
Reception
80
Banquet
60
Santa Clara
Dimensions (LxWxH)
7.3x3.8x-
Area (sq.mt)
27.9
Theater
-
Schoolroom
-
Conference
10
U-Shape
-
Reception
-
Banquet
-
Santa Catalina
Dimensions (LxWxH)
7.3x3.8x-
Area (sq.mt)
27.9
Theater
-
Schoolroom
-
Conference
10
U-Shape
-
Reception
-
Banquet
-
San Carlos
Dimensions (LxWxH)
4.7x3.9x-
Area (sq.mt)
18.4
Theater
-
Schoolroom
-
Conference
6
U-Shape
-
Reception
-
Banquet
-
San Francisco
Dimensions (LxWxH)
4.7x3.9x-
Area (sq.mt)
18.4
Theater
-
Schoolroom
-
Conference
6
U-Shape
-
Reception
-
Banquet
-
Santa Cruz
Dimensions (LxWxH)
7.3x3.8x2.4
Area (sq.mt)
27.9
Theater
-
Schoolroom
-
Conference
10
U-Shape
-
Reception
-
Banquet
-
San Diego
Dimensions (LxWxH)
4.7x3.9x2.4
Area (sq.mt)
18.4
Theater
-
Schoolroom
-
Conference
6
U-Shape
-
Reception
-
Banquet
-
Banquet
Generally used for meals and sessions involving small group discussions. A five foot round table seats eight people comfortably. A six foot round table seats 10 people comfortably.
Conference and Hollow Square
Appropriate for interactive discussions and note-taking sessions for fewer than 25 people. Many hotels have elegant "boardrooms" for 10 to 20 people, equipped with full audiovisual capabilities, a writing board, cork board and a flip chart.
E-Shape, U-Shape and T-Shape
Appropriate for groups of fewer than 40 people. These are best for interaction with a leader seated at the head of the setup. Audiovisual is usually best set up at the open end of the seating.
Theater
Appropriate for large sessions and short lectures that do not require extensive note-taking. This is a convenient setup to use before breaking into discussion or role-playing groups because chairs can be moved.
Reception
Stand-up social function where beverages and light foods are served. Foods may be presented on small buffet tables or passed by servers. May precede a meal function.
Schoolroom or Classroom
The most desirable setup for medium to large-size lectures. Requires a relatively large room. Tables provide attendees with space for spreading out materials and taking notes.
Ovals and Rounds
Generally used for meals and sessions involving small group discussions. A five foot round table seats eight people comfortably. A six foot round table seats 10 people comfortably.
Audio-Visual Equipment
  • 35MM Projector
  • AV Technician
  • Film Projector with Screen
  • LCD Panel
  • LCD Projector
  • Microphone
  • Overhead Projector
  • PA System
  • TV
  • TV Production Service Provider
  • Teleconferencing
  • Video Camera
  • Videoconferencing
  • Walkie Talkies
  • Wireless Internet
Event Services
  • Security Guards
Event Equipment & Supplies
  • Direction Signs
  • Easels
  • Flip Chart & Markers
  • Lobby Bulletin Board
  • Name Cards
  • Pens / Pencils / Notepad
  • Podium Lectern
  • Portable Stage
  • Stack Chairs
  • Tables
Business Services
  • Fax Service
  • Post/Parcel
Catering Services
  • Afternoon Break:$32.00 / Person
  • Coffee Break:$28.00 / Person
  • Continental Breakfast:$36.00 / Person
  • Dinner:$95.00 / Person
  • Full Breakfast:$45.00 / Person
  • Lunch:$50.00 / Person
  • Reception:$40.00 / Person
  • Third-party partners comply with MI cleanliness standards
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Walnut Creek Marriott

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DATES (1 NIGHT) NIGHTS)
Flexible in
S M T W T F S
Number of Nights
1
Rooms & Guests
Maximum 8 guests per room
Rooms
(Max: 3 Rooms/person)
1
Adults
(Max: 8 total guests/room)
1
Children
(Max: 8 total guests/room)
0
AGE OF CHILDREN (REQUIRED)
Special Rates

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