# Seaport, Boston office rents and availability

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

**Canonical URL:** https://classa.info/cities/boston/seaport/topics/rents-and-availability
**Page type:** nb-topic
**Last updated:** 2026-04-15T00:00:00.000Z
**License:** CC BY 4.0 with attribution to Class A Atlas (https://classa.info).

## 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.

## Key facts
- **city**: Boston
- **submarket**: Seaport
- **tier**: trophy
- **averageRentLocal**: $85/sqft/yr
- **cityClassARentUsd**: $78/sqft/yr
- **cityVacancyPct**: 19.5%

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

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Citation: Source: Class A Atlas (https://classa.info/cities/boston/seaport/topics/rents-and-availability), updated 2026-04-15T00:00:00.000Z.