Sheraton Grand Seattle Ballroom Capacities, Meeting Rooms & Floorplate Specs (56,331 Sq. Ft.)

Verified specs for 35 meeting rooms and the 18,301 sq. ft. main ballroom in Seattle, WA.

📞 Lock Block w/ Sara Chaval · (702) 576-1312 .md Spoke API

Sheraton Grand Seattle — Ballroom, Foyer & Breakout Capacity Matrix

56,331 sq. ft. total event space across 35 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	18,301 sq. ft.	22'–26' Clear	1,926	1,356	1,144	92 booths	$0 Rental w/ $28,000 F&B Min
Junior Ballroom & Divisional Plated Dining Hall Luncheons, Partner Summits & VIP Receptions	8,784 sq. ft.	18'–22' Clear	925	651	549	44 booths	$0 Rental w/ $14,000 F&B Min
Pre-Function Registration & Sponsor Showcase Concourse Badge Pickup, Tabletop Sponsors & Networking Breaks	10,140 sq. ft.	16'–24' Atrium	845	676	507	51 booths	Included w/ Grand Ballroom License
Executive Breakout & Boardroom Wing (35 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

Sheraton Grand Seattle — 8-Row Master Property & Group Contract Summary

Guest Room Inventory & Peak Group Allocation

1,236 Total Keys · Up to 519 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

56,331 Sq. Ft. Total · 35 Dedicated Meeting & Breakout Rooms

Optimal for 742–1,926 attendee conferences requiring simultaneous keynote and breakout tracks.

Largest Pillarless Ballroom Capacity

18,301 Sq. Ft. · 1,926 Theater · 1,356 Plated Banquet

Divisible soundproof airwalls; supports up to 92 standard 10×10 tabletop/exhibit booths (~200 gross sq. ft./booth) with 24-hour hold option.

Primary Convention Campus Connectivity

Seattle Convention Center (Arch & Summit) (8–12 min official show shuttle / rideshare)

Primary headquarter and exhibitor room-block anchor serving Seattle Convention Center (Arch & Summit).

Airport Transfer & Motorcoach Staging

SEA (Seattle-Tacoma International Airport) · 13.8 mi (20 mins off-peak / 35–48 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

$265/nt Group Block vs. $439/nt Peak Rack · 15.7% Seattle Convention Center & King County Tax

Mandatory $28/nt resort/destination fee is 100% waived when contracted through the Conventions.com Housing Desk (saves $233/room/night all-in).

Banquet F&B '++' Multiplier & Catering Minimums

$28,000 Ballroom Waiver Min · 25% Service + 10.25% Tax (+37.8% 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.