Seaport is a trophy-tier Boston submarket with average asking rent around $85/sqft/yr.

  • Average asking rent: $85/sqft/yr.
  • Tier: trophy.
  • Citywide Class A rent context: $78/sqft/yr ($78 USD).
  • Citywide vacancy: 19.5% — submarket-level availability is typically tighter at trophy tier.

Seaport, Boston office rents and availability

Seaport is a trophy-tier Boston submarket with average asking rent around $85/sqft/yr.

TL;DR

  • Average asking rent: $85/sqft/yr.
  • Tier: trophy.
  • Citywide Class A rent context: $78/sqft/yr ($78 USD).
  • Citywide vacancy: 19.5% — submarket-level availability is typically tighter at trophy tier.

Where rent sits

Seaport averages around $85/sqft/yr for Class A, against a citywide Class A index of 78. As a trophy submarket, rent runs above the city average and availability is structurally tight.

Availability dynamics

Boston's newest trophy quarter. Tech, life sciences, financial services, professional services.

Key facts

cityBoston
submarketSeaport
tiertrophy
averageRentLocal$85/sqft/yr
cityClassARentUsd$78/sqft/yr
cityVacancyPct19.5%

Frequently asked questions

What is the average Class A rent in Seaport, Boston?
Around $85/sqft/yr. The citywide Class A index sits at $78/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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