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June 5, 2023

PCL starts Interval on Mercer office towers bordering SLU

Real Estate Editor

Rendering by CollinsWoerman [enlarge]
Looking northwest, only the Phase I east building is depicted here.

The construction effort for the first of two Interval on Mercer office towers isn't yet below grade, but it's close. In recent weeks, all the old low-rise buildings have been scraped for the east and west towers, both to overlook Mercer Street near South Lake Union.

The east tower, 570 Mercer, has its master use permit and will be Phase I. That site is now dirt and slab, with trenching equipment starting to appear, but no sign yet of shoring or drilling rigs. Excavators, having demolished the old industrial structures — one once home to Foley Sign Co. — are standing by, ready to dig.

That and the west Phase II site, 550 Mercer, are ringed with construction fencing that lists all parties for the two eight-story towers, which will offer about 400,000 square feet.

Those names include: CollinsWoerman, architect; PCL Construction, builder; DCI Engineers, structural; KPFF and Navix Engineering, civil; Bush, Roed & Hitchings, surveyor; Site Workshop, landscape architect; PAE Engineers and Hermanson, mechanical; Hermanson, plumbing; GeoEngineers, geotechnical engineer; Coffman and Sequoyah, electrical; CDC, envelope; BAMO, interiors; TenW, transportation consultant; Graelic, parking consultant; Mark Zeff, interiors; Davis Partnership Architects, lighting; Ground Support, shoring; Fortune Shepler Saling, elevators; OAC Services, development consultant; Aspect Consulting, environmental; and Patriot Fire Protection.

JLL's Lloyd Low and Joe Gowan are the brokers.


Brian Miller can be reached by email at brian.miller@djc.com or by phone at (206) 219-6517.

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