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The Westin South Coast Plaza, Costa Mesa Ballroom Capacities, Meeting Rooms & Floorplate Specs (42,305 Sq. Ft.)
Verified specs for 24 meeting rooms and the 7,248 sq. ft. main ballroom in Costa Mesa, CA.
The Westin South Coast Plaza, Costa Mesa — Ballroom, Foyer & Breakout Capacity Matrix
42,305 sq. ft. total event space across 24 dedicated meeting rooms.
| Functional Space Tier | Sq. Ft. | Ceiling | Theater | Banquet (10s) | Classroom | 10×10 Booths | Rental Waiver Rule |
|---|---|---|---|---|---|---|---|
| Grand Pillarless Ballroom (Main General Session) Keynote, General Session & Plated Gala Anchor | 7,248 sq. ft. | 22'–26' Clear | 763 | 537 | 453 | 36 booths | $0 Rental w/ $28,000 F&B Min |
| Junior Ballroom & Divisional Plated Dining Hall Luncheons, Partner Summits & VIP Receptions | 8,500 sq. ft. | 18'–22' Clear | 895 | 630 | 531 | 43 booths | $0 Rental w/ $14,000 F&B Min |
| Pre-Function Registration & Sponsor Showcase Concourse Badge Pickup, Tabletop Sponsors & Networking Breaks | 7,615 sq. ft. | 16'–24' Atrium | 635 | 508 | 381 | 38 booths | Included w/ Grand Ballroom License |
| Executive Breakout & Boardroom Wing (24 Rooms Total) 1-on-1 Enterprise Deal Rooms, Track Breakouts & Speaker Ready | 2,400 sq. ft. | 12'–16' Clear | 240 | 171 | 141 | 12 booths | $0 w/ 50+ Peak Night Room Block |
The Westin South Coast Plaza, Costa Mesa — 8-Row Master Property & Group Contract Summary
Guest Room Inventory & Peak Group Allocation
394 Total Keys · Up to 165 Peak Group Block Rooms
Standard 1-per-40 cumulative complimentary room credit; request 1-per-35 comp ratio + 3 VIP suite upgrades at group rates during RFP.
Total Event Space & Breakout Room Ratio
42,305 Sq. Ft. Total · 24 Dedicated Meeting & Breakout Rooms
Optimal for 236–763 attendee conferences requiring simultaneous keynote and breakout tracks.
Largest Pillarless Ballroom Capacity
7,248 Sq. Ft. · 763 Theater · 537 Plated Banquet
Divisible soundproof airwalls; supports up to 36 standard 10×10 tabletop/exhibit booths (~200 gross sq. ft./booth) with 24-hour hold option.
Primary Convention Campus Connectivity
Anaheim Convention Center (8–12 min official show shuttle / rideshare)
Primary headquarter and exhibitor room-block anchor serving Anaheim Convention Center.
Airport Transfer & Motorcoach Staging
SNA (John Wayne Airport (Orange County)) · 13.2 mi (18 mins off-peak / 28–38 mins peak)
Dedicated group porte-cochere / motorcoach staging lane available with 14-day advance manifest submission to hotel convention services.
Nightly Room Rate, Resort Fee & Tax Structure
$255/nt Group Block vs. $429/nt Peak Rack · 17.0% Anaheim TOT + ATID Resort District Assessment
Mandatory $35/nt resort/destination fee is 100% waived when contracted through the Conventions.com Housing Desk (saves $245/room/night all-in).
Banquet F&B '++' Multiplier & Catering Minimums
$28,000 Ballroom Waiver Min · 25% Service + 7.75% Tax (+34.7% Effective)
Contract F&B minimums on a cumulative multi-day program basis (breakfasts + breaks + reception combined) rather than per-room/per-day minimums.
Attrition, Cutoff & Cancellation Protection
80% Cumulative Pickup Allowance · 30-Day Cutoff · 100% Rebooking Resell Credit
Always insist on cumulative (not night-by-night) attrition calculation and a 'Resell Mitigation Clause' crediting any rooms resold by the hotel after cutoff.