San Francisco and San Mateo County Multifamily Market Report, Q3 2026
San Francisco's apartment market is as tight as it has been in years. Vacancy across the 191,657 unit market closed the third quarter of 2026 at 3.6%, well below the 5.2% long run average, and asking rents climbed 12.7% over the past 12 months to $3,751. Net absorption of 2,552 units ran far ahead of the 628 units delivered, and with only 4,121 units under construction, relief on the supply side is not coming soon.
Investors have noticed. Sales volume reached $2.7 billion over the trailing 12 months against a $1.6 billion historical average, and market participants report cap rates roughly 75 basis points tighter than two years ago. Recent trades ran from Carmel Partners' $174 million sale of the 320 unit Towers at Rincon at $544,000 per unit, down to value add plays such as the 117 unit Terraces Apartments on Bush Street at $214,000 per unit.
Philip Batlin, Managing Director Investments at Marcus & Millichap, shares this quarter's report for Bay Area apartment owners deciding whether to hold, refinance, or sell.