Nine-story data center south of the Spokane Street Viaduct (SODO)
A developer has filed plans for a nine-story data center with its own power substation on an empty lot in SODO. The plans came in before Seattle paused large data centers, so they may go forward under old rules. The company behind it has not been named.
Where things stand: Drawings filed before Seattle's June 2026 pause, so the city considers it vested.
🕒 Latest update (June 18, 2026): KUOW reported the PacLand-filed plans were vested before the city's pause.
What we know
- 📍 Where3625 First Ave. S., an empty 4.6-acre lot just south of the Spokane Street Viaduct in SODO, Seattle, King County
- 🏢 Companyunknown (plans filed by engineering firm PacLand)
- 🔌 Where the power comes fromPlans show its own electrical substation next door.
❓ Still unanswered
Nobody has answered these in public yet. Can you help find out?
- Who is the developer and end user of the SODO data center? 🙋 I'll find out
- How much power would it use? 🙋 I'll find out
- What is the exact address? 🙋 I'll find out
What happened so far
- April 2026Civil engineer PacLand filed early plans with the city for a data center of three buildings at 3625 First Ave. S., for a client it did not name.
- June 3, 2026Public radio reported plans for a nine-story, windowless data center with its own substation.
- June 18, 2026KUOW reported the PacLand-filed plans were vested before the city's pause.
Local votes and rules
⏸️ Pause on new data centers
Seattle City Council voted unanimously to stop accepting or approving applications for new or bigger large data centers for one year (Ordinance 127447). It covers sites that need more than 20 MVA of power (about 20 megawatts). The mayor signed it on June 11. The city can renew it in six-month steps. A companion resolution asks city offices to study effects on power, water, bills, jobs and health.
Drag the slider to compare the land before and now.
Where this comes from
- Seattle advances AI data center moratorium bill · KUOW · June 3, 2026
- Seattle banned new data centers. Why companies want them here anyway · KUOW · June 18, 2026
- Data center proposed at 3625 First Ave. S. (real estate news) · Seattle Daily Journal of Commerce · April 2026
- Census geocoder: 3625 1st Ave S, Seattle · U.S. Census Bureau · Oct 8, 2026
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