Seaport is a trophy-tier Class A submarket of Boston with average asking rent around $85/sqft/yr.
Boston's newest trophy quarter. · Tier: trophy · Avg rent: $85/sqft/yr
The Seaport delivered a decade of new Class A office and lab. Strong tech, life-sciences, and financial-services tenancy. Now mid-cycle through lease-up of the latest deliveries.
Tech, life sciences, financial services, professional services.
25-40,000 sqft floor plates.
MBTA Silver Line (BRT to South Station and Logan Airport).
Silver Line provides direct Logan and South Station access.
Boston Harbor waterfront, ICA, Seaport Common.
Seaport is one of 6 Class A submarkets we cover in Boston, classified as trophy tier with an average asking rent around $85/sqft/yr. Compared with the broader Boston Class A stock, Seaport typically attracts Tech, life sciences, financial services, professional services and competes most directly with the city's other trophy submarkets on building specification, transit access, and amenitisation.
Adjacent submarkets to study alongside Seaport: Financial District, Cambridge & Kendall Square, Back Bay, Kendall Square. The full Boston submarket atlas is at /cities/boston.
For an institutional Class A occupier evaluating Seaport, 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:
Terminology specific to Boston Class A leasing and to the trophy tier: Class A, Trophy asset, Effective rent, Concession package, TI allowance, Submarket tier.
Reviewed by Miriam Hollander — Lead market analyst. Last updated 2026-04-15. See our methodology and editorial standards.