Sound Transit and Mercy Housing Northwest on Wednesday, Sept. 10, 2025 marked the grand opening of Connection Angle Lake, a new transit-oriented affordable housing development next to the Angle Lake Station.

The project includes 130 units of affordable housing, totaling 211 bedrooms in studio, one-, two- and three-bedroom apartments. The homes serve households earning under 50 to 60 percent of area median income, including 26 units for people with intellectual and developmental disabilities and eight units reserved for King County Housing Authority voucher recipients.

“Sound Transit is proud to have been able to contribute to this transit-oriented development by offering the site at a discount to support and bolster the supply of affordable housing,” said Sound Transit CEO Dow Constantine. “As people move into their new homes at Connection Angle Lake, they can enjoy connections along the 1 Line — from Angle Lake to Lynnwood — and look forward to more connections as we prepare to open Link light rail to Federal Way in December and to the Eastside with the Crosslake Connection in 2026.”

The development also includes ground-floor commercial space where The Arc of King County will provide services to people with intellectual and developmental disabilities and their families.

“Mercy Housing Northwest prides itself on building strong partnerships with each new affordable housing community we develop,” said Mercy Housing Northwest President Joe Thompson. “As Connection Angle Lake begins to welcome families and residents home, we are honored to work alongside partners such as Sound Transit, Amazon Housing Fund and The Arc of King County.”

Sound Transit originally acquired the site in 2013 for staging during construction of the station and garage. In 2022, the agency transferred the land to Mercy Housing at a discount to support the affordable housing project.

The development was funded by a mix of public and private partners, including the Washington State Housing Finance Commission, King County and the Amazon Housing Fund. Amazon contributed a $17 million low-interest loan and a $2 million grant as part of its $2 billion commitment to create and preserve affordable housing across its hometown regions.

Sound Transit’s transit-oriented development program has now supported more than 20 projects that will provide 3,481 affordable homes across the region.

The new development is located at 2650 S. 200th Street, SeaTac WA 98198.