Office fit-out costs in the Bay Area now lead the nation, as rising leasing activity—especially in high-end buildings—pushes landlords and tenants deeper into expensive upgrades.
New data from Cushman & Wakefield shows office tenant improvements reaching $228 per square foot in San Francisco and $224 in San Jose, far above the U.S. average of $149. Nationally, costs are up 5.5% year over year.
Why Costs Are Climbing
Higher labor expenses, union requirements, energy regulations, and overall operating costs continue to drive the Bay Area’s premium pricing, according to BisNow.
Electrical work is the biggest cost driver, making up 24% of total project spend. In San Francisco, electrical alone runs about $58 per square foot, with mechanical systems, plumbing, and fire protection close behind at $53 per square foot. Both categories have trended upward, with electrical costs jumping 6.5% in the past year.
Contractors expect more increases ahead, particularly for labor and materials, pointing to continued pressure through 2026.
Landlords Keep Spending to Attract Tenants
Tenant improvement (TI) allowances have surged over the past decade, rising 112% nationwide between 2016 and 2025, according to CompStak. While some reports suggest those incentives peaked, landlords in high-cost markets are still offering large packages to secure tenants.
The focus is clear: higher-quality buildings and premium office environments. As companies compete to bring employees back, upgraded space has become a key selling point.
Flight to Quality Alters Leasing
Demand is concentrating in top-tier buildings, with AI companies alone leasing more than 2 million square feet in San Francisco in 2025. At the same time, new office construction is slowing, tightening availability in Class A space.
That dynamic is starting to ripple through the rest of the market. As premium buildings fill up, attention is transitioning toward second-generation space and older offices that may need significant upgrades to compete.
Class B Faces a Cost Dilemma
Vacancy remains high in lower-tier buildings. Class B office space sits at 30.4% vacancy in San Francisco and just under 17% in Silicon Valley.
Rents reflect the gap. In downtown San Francisco, Class B offices average about $60 per square foot, compared to $75 for Class A and $110 for top-tier properties.
For landlords, the challenge is clear: investing in upgrades is costly, but without improvements, attracting tenants may be even harder.
