Providence Health & Services is packing up its headquarters and heading to Renton, locking in a roughly 260,000-square-foot lease at the Longacres office campus that is being billed as the largest new office deal in greater Seattle so far this year. The health system will consolidate several administrative operations into the Glacier and Baker buildings on the former Boeing site and is planning to shift its headquarters to the campus in 2027.
As reported by CoStar on April 21, 2026, the lease puts Providence into space previously occupied by Kaiser Permanente at Boeing’s former Longacres campus in Renton and marks the region’s biggest new office commitment so far this year, specifically tied to the Glacier and Baker buildings.
The deal in numbers
Newmark’s Q1 2026 Seattle office market report pegs the Providence commitment at about 259,570 square feet across six floors, labeling it the quarter’s largest Puget Sound office transaction and noting that the space had been used by Kaiser Permanente. The same Newmark analysis points to the Providence deal as a material contributor to the region’s positive absorption in the office market for the quarter.
Renton and the suburban rebound
Cushman & Wakefield’s Q1 MarketBeat for Seattle suburban markets shows Renton racking up nearly 288,000 square feet of leasing activity in the quarter, with the Longacres Glacier & Baker lease alone accounting for 259,570 square feet. That concentration of activity helps explain why Renton led suburban leasing in Q1. According to Cushman & Wakefield, a mix of affordability, large contiguous floorplates and limited new supply has been pulling tenants toward Renton and other value-focused suburban submarkets.
Longacres' makeover attracts big tenants
The Longacres campus has been undergoing a steady repositioning by its owners and developers to lure large corporate users, and they point to prior moves as proof the strategy is working. One key example: Alaska Airlines expanded and purchased training space at the site, a move owners cite as evidence Longacres can land major, nontraditional office tenants. Unico and other stakeholders have promoted the campus’ access to transit, modern floorplates and mixed-use potential as prime selling points for sizeable leases, according to Unico.
What’s next
Marketing materials for the Glacier and Baker buildings highlight full floors and Class A finishes that line up neatly with a health system back-office profile. The listing for the property confirms that the buildings offer large contiguous floorplates capable of handling Providence’s footprint, with detailed blocks of space that correspond to this quarter’s leasing activity. Those property specifics are laid out in the Longacres marketing listing on LoopNet, which catalogs the Glacier and Baker buildings and the portions of space that were leased.
