Boston Suburban Office Figures Q4 2025

• The Suburban Boston office market strengthened in Q4, recording a substantial rise in positive absorption. Quarter-over-quarter (q-o-q), absorption increased by 160,757 sq. ft., bringing total positive absorption for the quarter to 490,056 sq. ft.
• The largest deal this quarter was signed at 175 & 185 Wyman Street, Waltham, where Dassault Systèmesexecuted a 320,000 sq. ft. renewal.
• Mid-size transactions (20,000 to 50,000 sq. ft.) represented 21% of leasing activity in Q4 2025, and transactions over 50,000 sq. ft. represented 41.2% of all Q4 2025 leasing activity.
• Approximately 81% of the leases signed during the quarter occurred in Class A properties, up from last quarter’s 74.2%.
• The fourth quarter saw strong leasing velocity with an increase of roughly 230,000 sq. ft. q-o-q, totaling about 1.43 million sq. ft.. Average asking rents stayed flat with a decrease of $0.02 q-o-q to $29.54 per sq. ft. gross.
• The fourth quarter’s leasing velocity was fueled by renewals, with renewals/expansions accounting for 54.2% of all leasing activity. Six out of the top 10 leases of the quarter were renewals.
• Tenant demand in the fourth quarter of 2025 was 2,166,000 sq. ft., down 819,000 sq. ft. from last quarter’s 2,985,500 sq. ft.
• Vacancy decreased by 0.4% to 21.6% and availability fell by 0.5% to 26.3% in the fourth quarter.