21 Custom House Street — Lease in Boston, MA

  • Price: Contact for price
  • Listing type: For lease
  • Asset type: Office
  • Location: Boston, MA 02110

Description

Located near 2 blocks from State Street and one block from SE Expressway

Market Context

This office in Boston, MA is listed for lease. It has been on the market for 54 days. Compare it against other office listings for lease in Boston, MA — view the full market.

As of Q1 2026, the Boston office market showed cap rates around 9.7%. Source: multiple brokerage reports, Q1 2026.

Office market FAQ

What is the typical cap rate for office in Boston?
About 9.7% as of Q1 2026, per multiple brokerage reports.

Estimated Market Rate

$1.16/SF/mo – $1.56/SF/mo

Mid: $1.36/SF/mo

Rate-first confidence-weighted blend with cost-of-business adjustment.

Based on comparable properties in similar markets rather than local sales.

Contact

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