South Lake Union is a trophy-tier Seattle submarket with average asking rent around $60/sqft/yr.

  • Average asking rent: $60/sqft/yr.
  • Tier: trophy.
  • Citywide Class A rent context: $52/sqft/yr ($52 USD).
  • Citywide vacancy: 26.4% — submarket-level availability is typically tighter at trophy tier.

South Lake Union, Seattle office rents and availability

South Lake Union is a trophy-tier Seattle submarket with average asking rent around $60/sqft/yr.

TL;DR

  • Average asking rent: $60/sqft/yr.
  • Tier: trophy.
  • Citywide Class A rent context: $52/sqft/yr ($52 USD).
  • Citywide vacancy: 26.4% — submarket-level availability is typically tighter at trophy tier.

Where rent sits

South Lake Union averages around $60/sqft/yr for Class A, against a citywide Class A index of 52. As a trophy submarket, rent runs above the city average and availability is structurally tight.

Availability dynamics

Amazon's home campus. Tech (Amazon dominant), biotech, healthcare technology.

Key facts

citySeattle
submarketSouth Lake Union
tiertrophy
averageRentLocal$60/sqft/yr
cityClassARentUsd$52/sqft/yr
cityVacancyPct26.4%

Frequently asked questions

What is the average Class A rent in South Lake Union, Seattle?
Around $60/sqft/yr. The citywide Class A index sits at $52/sqft/yr.

Related

Editorial provenance

Reviewed by Miriam Hollander — Lead market analyst. Last updated 2026-04-15. See our methodology and editorial standards.

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