--- title: "South Lake Union, Seattle — Class A submarket" description: "Amazon's home campus." canonical: https://classa.info/cities/seattle/south-lake-union pageType: neighborhood lastUpdated: 2026-04-15T00:00:00.000Z license: "CC BY 4.0 with attribution to Class A Atlas (https://classa.info)." --- > South Lake Union is a trophy-tier Class A submarket of Seattle with average asking rent around $60/sqft/yr. ## TL;DR - Amazon's home campus. - Trophy tier — ~$60/sqft/yr. - Active Class A leasing market with deal flow across major broker desks. # South Lake Union, Seattle — Class A submarket *Amazon's home campus.* · Tier: trophy · Avg rent: $60/sqft/yr ## TL;DR - Amazon's home campus. - [Trophy tier](/topics/trophy-asset-selection) — ~$60/sqft/yr. - Active [Class A](/glossary/class-a) leasing market with deal flow across major broker desks. ## Overview South Lake Union is Amazon's home campus — the deepest single-tenant office concentration in the US. The Spheres are the iconic centerpiece. Surrounding inventory is largely Amazon-leased with limited multi-tenant Class A available. ## Tenant profile Tech (Amazon dominant), biotech, healthcare technology. ## Typical specification 15–40,000 sqft floor plates available across newer Class A stock; 9'+ slab-to-slab and modern MEP common. ## Transit Streetcar; Link 1 Line connects via Westlake. Multi-modal transit captures the metro's principal professional catchment. ## Amenities The Spheres, Lake Union waterfront, MOHAI. ## Comparable buildings - **The Spheres** [](https://www.google.com/maps/search/?api=1&query=The%20Spheres%2C%202111%207th%20Avenue%2C%20Seattle%2C%20WA%2098121%2C%20South%20Lake%20Union%2C%20Seattle%2C%20United%20States&query_place_id=ChIJsX8RyksVkFQRDBMdYsrOOX8) - **Day 1 Tower** [](https://www.google.com/maps/search/?api=1&query=Day%201%20Tower%2C%202121%207th%20Avenue%2C%20Seattle%2C%20WA%2098121%2C%20South%20Lake%20Union%2C%20Seattle%2C%20United%20States&query_place_id=ChIJ46lmAjcVkFQRoaRors1Vvx8) - **Re:Invent (Block 18)** [](https://www.google.com/maps/search/?api=1&query=Re%3AInvent%20(Block%2018)%2C%20300%20Boren%20Avenue%20North%2C%20Seattle%2C%20WA%2098109%2C%20South%20Lake%20Union%2C%20Seattle%2C%20United%20States&query_place_id=ChIJHfQ75DIVkFQRrz3v1toYruY) ## Where South Lake Union sits in Seattle South Lake Union is one of 5 Class A submarkets we cover in Seattle, classified as trophy tier with an average asking rent around $60/sqft/yr. Compared with the broader Seattle Class A stock, South Lake Union typically attracts Tech (Amazon dominant), biotech, healthcare technology and competes most directly with the city's other trophy submarkets on building specification, transit access, and [amenitisation](/glossary/amenitisation). Adjacent submarkets to study alongside South Lake Union: [Downtown CBD](/cities/seattle/downtown-cbd), [Bellevue](/cities/seattle/bellevue), [Pioneer Square](/cities/seattle/pioneer-square), [Redmond](/cities/seattle/redmond). The full Seattle submarket atlas is at [/cities/seattle](/cities/seattle). ## Topic deep-dives for South Lake Union For an institutional Class A occupier evaluating South Lake Union, the highest-leverage analyses to commission next are the rent benchmark, the concession-package comparable, and the ESG performance baseline. Class A Atlas covers each as a dedicated topic page for this submarket: - [South Lake Union — ](/cities/seattle/south-lake-union/rents-and-availability) - [South Lake Union — ](/cities/seattle/south-lake-union/tenant-profile) - [South Lake Union — ](/cities/seattle/south-lake-union/transit-and-commute) - [South Lake Union — ](/cities/seattle/south-lake-union/amenity-and-lifestyle) - [South Lake Union — ](/cities/seattle/south-lake-union/trophy-and-comparables) - [South Lake Union — ](/cities/seattle/south-lake-union/fit-out-and-spec) ## Related glossary Terminology specific to Seattle Class A leasing and to the trophy tier: [Class A](/glossary/class-a), [Trophy asset](/glossary/trophy-asset), [Effective rent](/glossary/effective-rent), [Concession package](/glossary/concession-package), [TI allowance](/glossary/ti-allowance), [Submarket tier](/glossary/submarket-tier). ## Editorial provenance Reviewed by [**Miriam Hollander**](/about/authors/miriam-hollander) — Lead market analyst. Last updated 2026-04-15. See our [methodology](/about/methodology) and [editorial standards](/about/editorial-standards). ### Primary sources for this page - [CBRE Marketview reports](https://www.cbre.com/insights) — CBRE - [JLL Office Insight](https://www.jll.com/en/trends-and-insights) — JLL - [Cushman & Wakefield Marketbeat](https://www.cushmanwakefield.com/en/insights) — Cushman & Wakefield - [Savills World Research](https://www.savills.com/research_articles/) — Savills - [Colliers Global Office Outlook](https://www.colliers.com/en/research) — Colliers [Full sources index](/about/sources) · [Submit a correction](/about/corrections) ## Related topics - [**Class A Lease Negotiation**](/topics/class-a-lease-negotiation) — How to negotiate a Class A office lease — the playbook from LOI to signed deal. - [**Hybrid Workplace Strategy**](/topics/hybrid-workplace-strategy) — How to size, structure, and lease a Class A office for a hybrid workforce. - [**ESG / LEED for Tenants**](/topics/esg-leed-tenants) — How tenants evaluate, negotiate, and report on ESG performance in a Class A office lease. - [**Cross-border Expansion**](/topics/cross-border-expansion) — How to run a coordinated Class A office search across multiple geographies. - [**Fit-out Capex**](/topics/fit-out-capex) — How to budget, sequence, and govern Class A office [fit-out](/topics/fit-out-capex)">fit-out capex. - [**Lease vs Flex**](/topics/lease-vs-flex) — When premium flex (coworking, [managed office](/glossary/managed-office)) beats a conventional Class A lease — and vice versa. --- Citation: Source: Class A Atlas (https://classa.info/cities/seattle/south-lake-union), updated 2026-04-15T00:00:00.000Z.