Downtown Miami's Waldorf Astoria Begins Final Cube
PMG's downtown Miami supertall has begun its ninth and final stacked cube at floor 85, nearing topping out ahead of a 2028 opening.
PMG’s Waldorf Astoria Hotel and Residences Miami has started construction on its ninth and final stacked cube, the last of the offset glass volumes that give the 100-story supertall its shifting profile at 300 Biscayne Boulevard. The concrete superstructure has climbed to level 85 of 100, general contractor John Moriarty and Associates’ pace shows, putting the tower roughly 15 floors from topping out.
Why it matters
This outlet reported on August 13 that PMG’s stated completion date for the tower has moved four times since 2021, from 2025 to 2026 to Q2 2028, even as concrete work passed the 60th floor. See that story for the full timeline. This update is a different measure, physical progress rather than a marketing date. Crews have poured roughly 25 floors in the six months since February, a pace that has not slowed the push toward Florida’s first supertall. Reaching the ninth and final cube means the tower’s most distinctive architectural feature, a series of shifting glass volumes designed by Carlos Ott with Sieger Suarez, is now fully underway rather than partially built.
The numbers
The FAA’s own 2021 aeronautical determination for the site put the approved structure height at 1,040 feet above ground level, not the 1,049 feet the project markets, a gap that accounts for the parcel’s 9-foot elevation above sea level. At 100 stories and floor 85 already poured, the tower has roughly 15 floors and one architecturally complex cantilevered cube left before it tops out, which PMG and Greybrook expect this winter. Completion and Hilton’s opening remain targeted for the second quarter of 2028.
What’s next
The ninth cube’s cantilever, which projects farther from the tower’s central axis than any of the eight below it, is the most structurally demanding phase left in the vertical build. A topping out this winter would leave roughly a year and a half for interior finishes, hotel systems and amenity buildout before the 2028 target, timing PMG has not had to revise for this Miami supertall.