JW Marriott Austin — Floor Plans & Event Spaces

About this data

This page is part of the EventDiagram venue registry — floor-plan data published for event planners, vendors, and the venue itself. This record was compiled from the venue's public materials and has not yet been claimed by the venue. Room geometry is traced from the venue's own drawings to the room's actual perimeter — vestibules, alcoves, and door bays included — with scale verified by two independent checks before publishing. Software assists the tracing; a person reviews every plan against its source before it appears here. Capacity figures are only ever the venue's own published numbers — we never estimate them. Full details in how we measure venues.

Sources

• JW Marriott Austin published floor plan 'Level 3 - JW Marriott Austin' (FloorPlanTool.com / Q9Platform), carrying the Level 3 plan and Level 3 capacity chart (retrieved 2026-09-04)
• https://www.marriott.com/en-us/hotels/auswj-jw-marriott-austin/

Scale verification

• Lone Star Ballroom: Scale check 1 (width): the plan's three drawn airwall lines fall at exactly equal 114.5 px spacing, and the two outer spans land on the room's wall faces - four equal bays over a 458 px clear span. Against the hotel's published 204 ft width that calibrates to 2.2451 px/ft, and makes each bay 51.0 ft, matching the published 'Salon A-C / D / E / F-H' width of 51 ft exactly.
• Lone Star Ballroom: Scale check 2 (depth): the two drawn cross-airwall lines fall at equal 83 px thirds of a 249 px clear span, landing on the top and bottom wall faces. Against the published 113 ft depth that calibrates to 2.2035 px/ft, and makes each bay 37.7 ft against the published 38 ft per salon.
• Lone Star Ballroom: The two independent checks agree to 1.85% (2.2451 vs 2.2035 px/ft), inside the runbook's 3% tolerance.
• Lone Star Ballroom: Cross-check: the three airwall storage pockets drawn in the bottom wall sit at 51, 102 and 153 ft - the exact quarter points the published salon widths predict, from a measurement that never used them.
• Lone Star Ballroom: Area cross-check: 204 x 113 = 23,052 sq ft against the hotel's published 23,100 sq ft (0.2%).

Known limitations

• Lone Star Ballroom: The ballroom's clear span is a true rectangle - the wall faces were profiled across the full 204 ft and run dead straight, so no perimeter detail has been simplified away.
• Lone Star Ballroom: The four openings in the north (pre-function) wall sit in door bays recessed about 6.7 ft into the wall thickness, beyond the sellable clear span; they are captured as doors at their measured positions rather than as extra floor area, which is why 204 x 113 reconciles to the hotel's published 23,100 sq ft.
• Lone Star Ballroom: The north wall also carries an 11.6 ft operable partition (drawn in the same dashed line as the airwalls) that opens the ballroom to the pre-function area.
• Lone Star Ballroom: Seven airwall storage pockets are drawn into the wall thickness - three in the south wall at the 51/102/153 ft divider lines, two in each of the east and west walls at the cross-divider lines. They are wall cavities, not room area, so they are not part of the floor polygon.
• Lone Star Ballroom: The ballroom subdivides as a 2-D grid: four 51 ft bays across, with the outer two bays (A-C and F-H) each splitting again into three ~37.7 ft deep salons. The airwall sections recorded here run along the 204 ft axis only, so combinations derive across A-C / D / E / F-H; the individual A/B/C and F/G/H splits are published in the capacity chart above but are not yet derivable geometry.
• Lone Star Ballroom: Source is a 820x720 raster at 2.245 px/ft (one pixel is about 5.3 in), so door widths are measured to about half a foot and sub-foot pilaster detail is not recoverable. Door leaf widths are recorded as measured, not rounded to nominal sizes.
• Lone Star Ballroom: Door swing is recorded as outward on the assumption required for assembly occupancy egress; individual leaf hinge sides were not legible at source resolution.
• Lone Star Ballroom: The hotel also publishes a reduced 'with AV' capacity for every setup style (e.g. 1,440 banquet and 2,448 theater for the full ballroom against 1,525 and 2,880 without). Only the standard figures are charted here.
• Lone Star Ballroom: Ceiling height 18 ft is the hotel's published figure; no columns are shown inside the ballroom on the source plan, but a clear span is not explicitly stated.
• Salon 301-302: Published rectangular envelope from the hotel's Level 3 capacity chart; the outline has not been traced, so vestibules, niches and door positions are not yet captured.
• Salon 301-302: The hotel publishes 301 as 28 ft and 302 as 29 ft wide but their combination as 58 ft; the two 29 ft sections here tile the published combined envelope.
• Salon 303-304: Published rectangular envelope from the hotel's Level 3 capacity chart; the outline has not been traced, so vestibules, niches and door positions are not yet captured.
• Salon 305: Published rectangular envelope from the hotel's Level 3 capacity chart; the outline has not been traced, so vestibules, niches and door positions are not yet captured.
• Salon 305: Published as 25 x 34 ft; recorded here with the long axis as width per the house convention.
• Salon 306: Published rectangular envelope from the hotel's Level 3 capacity chart; the outline has not been traced, so vestibules, niches and door positions are not yet captured.
• Salon 306: Published 811 sq ft against a 35 x 21 ft envelope (735 sq ft), so the room is not a plain rectangle.
• Salon 307: Published rectangular envelope from the hotel's Level 3 capacity chart; the outline has not been traced, so vestibules, niches and door positions are not yet captured.
• Salon 307: Published 807 sq ft against a 35 x 21 ft envelope (735 sq ft), so the room is not a plain rectangle.
• Salon 308: Published rectangular envelope from the hotel's Level 3 capacity chart; the outline has not been traced, so vestibules, niches and door positions are not yet captured.
• Salon 309: Published rectangular envelope from the hotel's Level 3 capacity chart; the outline has not been traced, so vestibules, niches and door positions are not yet captured.
• Salon 310-311: Published rectangular envelope from the hotel's Level 3 capacity chart; the outline has not been traced, so vestibules, niches and door positions are not yet captured.
• Salon 310-311: Section widths 28 and 42 ft are the hotel's own published individual dimensions and tile the published 70 ft combined envelope exactly.

Last updated September 4, 2026. Spot an error? Claim this venue to manage it, or tell us.