Boston’s Trophy Office Rents Hit Record Highs, Driven by Law Firms Amidst Construction Stagnation

Boston's top-tier office market is experiencing a significant surge in rents, reaching a two-year high across Greater Boston, according to JLL's third-quarter data. This premium segment is primarily driven by law firms, which remain highly active tenants willing to pay top dollar for trophy assets. With no new office construction anticipated in the near term, existing luxury spaces are poised for continued rent growth.

Average asking rents for high-rise trophy buildings hit $105.02 per square foot in Q3, while the broader market saw its average asking rents decrease to $66.49 per square foot. The Back Bay submarket leads with asking rents close to $130 per square foot, a 15% increase from pre-pandemic levels. Downtown Boston follows, having reached $110 per square foot in Q2 2026. Notable recent leases include Greenberg Traurig's 82,000 square foot deal at Hines' South Station Tower and Paul Hastings' 52,000 square foot lease at BXP's Prudential Center.

Despite shrinking vacancy rates in the highest-quality properties—Tier 1 high-rise availability fell to 3.2%—JLL Research Manager Bryan Montgomery indicates that new office development in Boston is unlikely to break ground before the end of the decade. Construction costs remain too high to support new projects, requiring "explosive rent growth" in the top market segment to justify future development in the 2030-2032 timeframe. This creates a challenging environment for developers seeking to add new supply.