With Occupancy Brimming, Investors Pile Into Bay Area Apartments

A year of double‑digit rent growth and the tightest multifamily occupancy rates in the country have turned the Bay Area into one of the hottest hunting grounds for apartment investors.

Capital is pouring back into San Francisco and San Jose as historically tight supply and an artificial intelligence‑driven demand surge reshape the multifamily landscape, with effective rents climbing and virtually no new units slated for 2026.

“The Bay Area has been kind of neglected for a 10-year run,” said David Feinberg, managing partner and chief information officer of Sack Capital Partners, a 50-year-old private real estate investment firm headquartered in San Francisco. “Unlike other parts of the country, the supply here was really cut off as opposed to other markets, and that’s been a boon for rent growth.”

Multifamily occupancy in San Francisco was tied with Honolulu as highest in the country at 97.6% in the second quarter of 2026, while San Jose at 97.4% was tied for second-highest with New York City and Virginia Beach, according to Colliers. Despite low vacancy in the Bay Area’s two largest cities, both metros are in the bottom 10 of major U.S. markets for new apartment units under construction, researchers at Colliers reported.

Effective rents in San Francisco were $3,938 in Q2, up 10.6% year-over-year, while San Jose stood at $3,538, a 6.1% increase from the same quarter in 2025. The dearth of new units coming online and a rapid rise in rental rates have private investors and institutional capital scouring the Bay Area for multifamily buys.

A postpandemic wave of apartment construction across the Sun Belt led to a glut of inventory, sagging rents and landlords offering concessions such as two months of free rent to lure new tenants to vacant properties. That influx of activity never made its way to the Bay Area, leaving the market supply constrained as people began moving back to the area amid the rise of AI.

The Bay Area is also known for its lengthy planning process that can make buying an existing property more attractive to investors than building new. 

All of these factors have combined to contribute to a wave of new apartment sales this year.

Notable multifamily transactions in the Bay Area in Q2 include Holland Partner Group’s $105M acquisition of 218 keys near downtown San Jose at $482K per unit, and Bedford Affordable Housing’s $87M acquisition of 262 units in San Jose for $334K per unit. 

A total of 63 multifamily deals closed in San Francisco in Q2, Colliers researchers noted, up from 59 in the same quarter a year earlier and 56 in Q2 2024. Total sales volume was $347M, up from $285M in Q2 2025.

In the South Bay, institutional capital was up 20% year-over-year and accounted for about 60% of total investor activity for the 12 months ending March 30, researchers at Marcus & Millichap reported.

Sunnyvale, western San Jose and Campbell had the most institutional transactions. Private investors, meanwhile, were more active in downtown and south San Jose, where the barrier to entry is easier. Just 150 new units, or 0.1% of total inventory, are projected to come online in 2026 in San Jose.

The buyer pool for multifamily deals is both large and varied, said Dustin Dolby, vice chair of multifamily with Colliers’ San Francisco office.

“This has been maybe the hottest market in the United States as of late, and it’s all types of investors,” he said. “You’re seeing pension funds, real estate companies, private investors and family offices. It’s not one sector or one investor profile that’s looking at the market. It’s the whole investment community.”

As AI, robotics and tech-related companies continue to backfill office space in San Francisco and farther south to San Jose, demand for multifamily housing has surged across the Bay Area.

“We’re seeing a resurgence of energy from people wanting to be in the city and be part of a movement,” Dolby said. “If you go out during lunchtime, lines are probably 30 to 40 deep just to get some food. I haven’t seen that since 2019, pre-Covid, where you had to wait in line, or the bars were packed for happy hour. Traffic is back, too — I don’t know whether I should hate it or love it.”

The message has been clear to investors, though.

Sack Capital Partners has acquired six multifamily assets in key Bay Area submarkets over the past 18 months, Feinberg said. Its most recent acquisition was a joint venture with LEM Capital of Philadelphia on a 122-key value-add play at a garden-style community in Fremont. SCP’s portfolio of multifamily assets includes properties in the Napa Valley Wine Country in Sonoma County south to hundreds of keys in tech-centric Fremont and San Jose.

“About two years ago, we started seeing some strength leasing, especially as you got closer to [San Francisco] and near the technology hubs,” Feinberg said. “This AI boom is real, and it’s having a tangible effect on employment growth, which ties into apartment fundamentals.”

Primary and tertiary Bay Area markets are booming equally from advancements in AI, Feinberg added. San Francisco is the epicenter of agentic AI, while north San Jose and Fremont are the backbone of physical AI. 

This boom is poised for an extended run due to the region’s extremely constrained housing supply and high cost of homeownership in the Bay Area, Feinberg said.

Average home prices in San Francisco are north of $1.4M, while home sales in San Jose average more than $1.3M, Zillow reported.

“The rent versus own gap in San Jose is the widest in the entire country,” Feinberg said. “You see that all up and down the Peninsula and in the East Bay. We see stability for the foreseeable future, even if there is going to be a hiccup in some AI valuations.”