Boston Commercial Office Space for Rent
Q3 2026
Q3 2026 Boston Commercial Real Estate Market Report
Focus: Q3 2026 Market Trends
Executive Summary
Greater Boston's suburbs carried office demand in Q2 2026, accounting for 55.0% of leasing, while industrial rents reached a record $16.06/SF and retail vacancy stayed below 4%. Tenant demand on TenantBase shifted dramatically toward office in Q3: office space accounted for 60.7% of all Boston tenant searches, nearly ten times its 6.3% share in Q2, with most interest focused on the Route 128 and I-495 corridors.
Sector Snapshot
- Office: Suburbs leading. Vacancy was 19.0% in Q2, with suburban clusters adding 111,000 SF of absorption.
- Industrial: Record rents. Asking rent rose 8.0% year over year to $16.06/SF, with vacancy at 12.4% as new supply delivered.
- Retail: Very tight. Vacancy is expected to stay below 4% through year-end.
- Multifamily: Stable occupancy. Stabilized occupancy was 95.6%.
Boston Tenant Demand Index
The TenantBase Tenant Demand Index tracks what businesses across Greater Boston are actively searching for on the TenantBase platform each quarter. Because it measures tenant intent before leases are signed, it shows where demand is heading ahead of traditional vacancy and absorption data.
Q3 2026 Search Share by Space Type (July 1 to September 30, 2026)
- Office: 60.7%
- Retail/Storefront: 35.7%
- Warehouse/Industrial: 3.6%
Three-Quarter Trend
- Office: 6.5% in Q1, 6.3% in Q2, 60.7% in Q3
- Retail/Storefront: 73.8% in Q1, 69.4% in Q2, 35.7% in Q3
- Warehouse/Industrial: 19.6% in Q1, 25.0% in Q2, 3.6% in Q3
Key Takeaways
- Office overtook retail as Boston's top search category for the first time in 2026, rising from 6.3% to 60.7% of searches.
- Office tenants are planning longer. Half of Q3 office searches sought terms of 3 years or longer, up from 38.5% in Q2.
- Retail tenants want long-term leases. Every Q3 retail search with a stated term sought 3 years or longer, and 57.1% sought 5+ years.
- The suburbs dominate location interest. Route 128 North, South, and West were the most requested areas, followed by I-495 Mass Pike West, I-495 North, Boston, and Allston/Watertown.
Office Market
Key Metrics (Q2 2026)
- Vacancy: 19.0% across Greater Boston (Cushman & Wakefield)
- Average asking rent: $47.74/SF direct, with Class A at $52.34/SF and Downtown at $65.89/SF (Cushman & Wakefield)
- Leasing: 1.7 million SF in Q2, with the suburbs accounting for 55.0% (Cushman & Wakefield)
- Sublease: available sublease space fell to 6.5 million SF, the lowest since Q4 2022 (Cushman & Wakefield)
- 128 Belt: 18.1% vacancy at $34.79/SF, with 128 North at 14.8% and 128 South at 14.3% (Cushman & Wakefield)
- 495 Belt: 17.9% vacancy at $24.06/SF, with 495 West at 18.4%, 495 North at 20.5%, and Framingham/Natick at 7.7% (Cushman & Wakefield)
- Notable lease: Boston Dynamics, 322,000 SF in Waltham, the largest new deal since 2022 (Cushman & Wakefield)
TenantBase Office Activity
Demand share: 60.7% of Boston tenant searches, up from 6.3% in Q2 and 6.5% in Q1.
Lease term preferences:
- Less than one year: 33.3%
- 3 to 5 years: 33.3%
- 2 to 3 years: 16.7%
- 5+ years: 16.7%
Space requirements by term:
- Less than one year: 667 to 1,500 SF
- 2 to 3 years: 1,167 to 2,333 SF
- 3 to 5 years: 1,625 to 3,375 SF
- 5+ years: 1,500 to 3,333 SF
TenantBase data vs. the market: Boston office tenants on TenantBase are small suburban users needing under 3,500 SF, mostly along Route 128 and I-495. The 495 Belt offers rents about $10/SF below the 128 Belt, while Framingham/Natick, at 7.7% vacancy, is the tightest suburban submarket. Tenants open to 495 North, at 20.5% vacancy, will find the most leverage.
Industrial & Warehouse Market
Key Metrics (Q2 2026)
- Vacancy: 12.4%, up 50 basis points from Q1, driven by speculative deliveries (Cushman & Wakefield)
- Average asking rent: $16.06/SF, a market record and up 8.0% year over year (Cushman & Wakefield)
- Leasing: nearly 2.0 million SF in Q2, with first-half leasing the highest since 2021 (Cushman & Wakefield)
- Deliveries: more than 1.4 million SF year to date, nearly triple all of 2025 (Cushman & Wakefield)
- Notable lease: a confidential logistics tenant, 616,875 SF at 75 Plain St in Hopedale (Cushman & Wakefield)
TenantBase Industrial Activity
Demand share: 3.6% of Boston tenant searches, down from 25.0% in Q2 and 19.6% in Q1.
Space requirements: Q3 industrial searches sought 5+ year terms at 2,500 to 10,000 SF.
TenantBase data vs. the market: New speculative supply is giving industrial tenants more options, but record asking rents mean long-term users should lock in terms carefully.
Retail Market
Key Metrics (2026)
- Vacancy: expected to stay below 4% through year-end, a level not exceeded since 2013 (Marcus & Millichap)
- Retail sales: up 5.0% in the 12 months ended June (Marcus & Millichap)
- Household income: median above $125,000 (Marcus & Millichap)
TenantBase Retail Activity
Demand share: 35.7% of Boston tenant searches, down from 69.4% in Q2.
Lease term preferences:
- 5+ years: 57.1%
- 3 to 5 years: 42.9%
Space requirements: 3 to 5 year retail searches averaged 5,500 to 11,250 SF.
TenantBase data vs. the market: Boston retail tenants on TenantBase are larger users committing long term. With vacancy below 4%, these tenants should begin their search well ahead of opening and be ready to move quickly.
Multifamily Market
Boston stabilized apartment occupancy was 95.6% as of March 2026, according to Yardi Matrix. Average asking rent was $2,876, down 0.6% year over year. About 13,400 units were under construction.
Q4 2026 Outlook
- Office: Expect suburban clusters to keep leading leasing, with tenant leverage along I-495.
- Industrial: Expect vacancy to stay elevated as new supply delivers, with rents holding near record levels.
- Retail: Expect vacancy to remain below 4%.
- Multifamily: Expect occupancy near 95% and flat rents.
Frequently Asked Questions
What type of commercial space are Boston tenants searching for in 2026?
In Q3 2026, office space made up 60.7% of Boston tenant searches on TenantBase and retail/storefront made up 35.7%. Office share rose from 6.3% in Q2.
Which Greater Boston areas are tenants searching most?
Route 128 North, South, and West were the most requested areas on TenantBase in Q3 2026, followed by the I-495 corridor, Boston, and Allston/Watertown.
What is the office vacancy rate in Boston?
Greater Boston office vacancy was 19.0% in Q2 2026, with the 128 Belt at 18.1% and the 495 Belt at 17.9%, according to Cushman & Wakefield.
How much does office space cost along Route 128?
128 Belt office asking rents averaged $34.79/SF in Q2 2026, compared with $24.06/SF along the 495 Belt, according to Cushman & Wakefield.
What is the industrial vacancy rate in Boston?
Greater Boston industrial vacancy was 12.4% in Q2 2026, with record asking rents of $16.06/SF, according to Cushman & Wakefield.
How can I find commercial space in Boston at no cost?
TenantBase matches business tenants with vetted independent tenant rep brokers across Greater Boston at no cost to the tenant. Brokers are compensated by the landlord. Get started with TenantBase.
Sources
- TenantBase proprietary search data, Boston, July 1 to September 30, 2026
- TenantBase, Boston Commercial Real Estate Market Report, Q2 2026
- TenantBase, Boston Commercial Real Estate Market Report, Q1 2026
- Cushman & Wakefield, Boston Office MarketBeat, Q2 2026
- Cushman & Wakefield, Boston Industrial MarketBeat, Q2 2026
- Marcus & Millichap, Boston Retail Market Report, 3Q 2026
- Multi-Housing News, Boston Multifamily Report (Yardi Matrix), June 2026
Disclaimer
Information in this report is aggregated from third-party sources and TenantBase proprietary platform data, and was synthesized with the assistance of AI. Market metrics reflect the most recent published data available at the time of writing. TenantBase search data reflects tenant activity on the TenantBase platform and is not a measure of total market leasing. All figures should be independently verified before making real estate decisions.