South Lake Union comparable Class A buildings include The Spheres, Day 1 Tower, Re:Invent (Block 18).

• The Spheres
• Day 1 Tower
• Re:Invent (Block 18)

TL;DR

• The Spheres
• Day 1 Tower
• Re:Invent (Block 18)

Comparables

**The Spheres** **Day 1 Tower** **Re:Invent (Block 18)**

Key facts

Frequently asked questions

Which buildings are typical comparables in South Lake Union?

The Spheres, Day 1 Tower, Re:Invent (Block 18)

Related

• South Lake Union — submarket overview
• Seattle — full city profile
• Seattle submarkets — all
• South Lake Union — Rents
• South Lake Union — Tenants
• South Lake Union — Transit
• South Lake Union — Amenity

Editorial provenance

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

Primary sources for this page

• CBRE Marketview reports — CBRE
• JLL Office Insight — JLL
• Cushman & Wakefield Marketbeat — Cushman & Wakefield
• Savills World Research — Savills
• Colliers Global Office Outlook — Colliers

Full sources index · Submit a correction

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• Cross-border Expansion — How to run a coordinated Class A office search across multiple geographies.
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