- The overall average office lease size in Downtown Boston increased 18.1% from 2025 to Q1 2026, demonstrating strength and commitment in the market.
- While Trophy and Class A average lease size decreased slightly in 2026 following a year of large leases in new towers, it is expected to recover with large blocks and consolidations being eyed by Boston’s top firms.
- With return-to-office trends gaining traction in Boston, lease sizes are expected to continue to expand in 2026.
Overall average office lease size increases in Downtown Boston
Downtown Boston average lease size by property class
June 16, 2026
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US-MA-BOS Boston