OC multifamily cap rates have compressed from 5.5?6.0% in 2015 to 4.0?4.8% today ? a compression that has created enormous wealth for long-term holders while making new acquisitions increasingly challenging at current interest rates. Here's the historical arc, what drove it, and what 2026 looks like.
Understanding where cap rates have been is essential context for evaluating where they're going. OC multifamily has been in a long-term cap rate compression cycle driven by constrained supply, persistent demand, and institutional capital chasing the asset class. That compression has not reversed despite rising interest rates — but the dynamics are shifting.
The 2015–2019 Compression
In 2015, OC multifamily traded at weighted average cap rates of approximately 5.3–5.8% across submarkets. Coastal assets were at 4.8–5.2%; inland markets (Anaheim, Santa Ana, Garden Grove) were trading at 5.8–6.5%. These rates reflected a market in early recovery from the 2008–2012 trough, with institutional capital beginning to flow aggressively into coastal California multifamily. By 2019, cap rates had compressed to 4.5–5.2% county-wide. The compression was driven by two forces: NOI growth (rents rose 25–35% between 2015 and 2019) and yield compression as more capital chased the asset class.
Coastal OC cap rates compressed from 5.1% in 2015 to 3.7% at the 2021 trough. Rising rates in 2022–2023 pushed both markets slightly higher, but OC remains structurally below national averages.
| Year | Coastal OC | Inland OC |
|---|---|---|
| 2015 | 5.1% | 6.2% |
| 2016 | 4.9% | 6.0% |
| 2017 | 4.7% | 5.8% |
| 2018 | 4.6% | 5.6% |
| 2019 | 4.5% | 5.2% |
| 2020 | 4.3% | 5.2% |
| 2021 | 3.7% | 4.9% |
| 2022 | 3.8% | 5.0% |
| 2023 | 4.0% | 5.2% |
| 2024 | 4.1% | 5.3% |
| 2025 | 4.2% | 5.4% |
COVID and the 2021 Surge
The 2020 COVID period created a brief pause in OC multifamily transaction volume but no meaningful cap rate expansion. Unlike commercial office and retail — which saw significant distress — OC multifamily vacancy remained controlled through the pandemic. California’s eviction moratoriums kept tenants in place, government stimulus supported rent payment, and OC’s housing shortage meant displaced demand had nowhere to go. Cap rates at the end of 2020 were essentially flat to 2019 levels, with coastal assets at 4.2–4.5% and inland at 5.2–5.8%.
Tap any bar to see what that cap rate means for investors at current financing rates.
| Submarket | Cap Rate |
|---|---|
| Newport Bch | 3.8% |
| Laguna Bch | 3.9% |
| Huntington Bch | 4.2% |
| Irvine | 4.3% |
| Costa Mesa | 4.5% |
| Santa Ana | 5.0% |
| Anaheim | 5.2% |
| Fullerton | 5.4% |
| Garden Grove | 5.3% |
| Orange | 5.1% |
2021 was the historic anomaly. Pandemic-era monetary policy — the Fed funds rate at zero, 10-year Treasury yields near 1.5% — flooded multifamily with institutional and private capital simultaneously. OC benefited disproportionately: it was seen as a supply-constrained, high-quality market with durable fundamentals. Coastal cap rates compressed to 3.6–3.9%, the lowest levels ever recorded in the county. Inland OC compressed to 4.8–5.2%. Transaction volume spiked as sellers who had held through COVID chose to exit into a historic pricing environment.
The NOI side reinforced the compression. OC rents surged 15–22% between 2021 and 2022 as pent-up household formation, remote work mobility, and a tight housing market all collided. Investors buying at 3.7% cap rates in 2021 were simultaneously watching their NOI grow rapidly — which made the math feel better in real time even if it looked expensive on paper.
Rising Rates 2023–2025
The Fed’s rate hiking cycle that began in 2022 created the most significant challenge to OC multifamily values since the 2008 crisis — but the adjustment has played out through lower transaction volume rather than the outright price correction many expected.
By mid-2023, the 10-year Treasury had moved from 1.5% to 4.5%, and 30-year fixed investment property rates crossed 7%. At those financing costs, most OC multifamily acquisitions produce deeply negative cash flow. The buyer pool contracted sharply: all-cash buyers and investors with minimal financing needs remained active, but leveraged buyers — who represent the majority of transaction volume in normal markets — stepped back.
What prevented a price collapse was seller behavior. OC multifamily owners, many of whom had acquired at low basis years earlier, chose to hold rather than sell at prices implying cap rates they perceived as too high. Transaction volume in 2023–2024 fell 40–50% below 2021–2022 levels. The bid-ask spread between sellers (who still anchored to 2021 valuations) and buyers (who needed higher yields to justify the financing cost) simply didn’t close.
Cap rates moved out modestly — coastal assets from the 2021 floor of 3.7% to approximately 4.0–4.2% by 2025, inland from 4.9% to 5.2–5.4%. That’s meaningful movement in dollar terms on any individual asset, but far less than the 150–200 basis point expansion that some market observers predicted when rates began rising. The structural supply constraint — OC’s inability to add meaningful multifamily supply quickly — provided the floor that kept cap rates from expanding to match the rate environment.
2026 Outlook
The 2026 outlook depends primarily on the trajectory of interest rates. If the Fed's rate cutting cycle continues and the 10-year Treasury moves toward 3.5–4.0%, cap rate compression could resume — supporting or improving current values. If rates remain elevated, sustained negative leverage will eventually force more motivated sellers into the market, creating modest cap rate expansion of 20–40 basis points from current levels. The supply picture remains supportive: OC deliveries in 2026 are projected at approximately 1,600 units — well below the 10-year average of 2,400. Low new supply in the context of consistent demand is the structural floor under OC multifamily values. Major cap rate expansion would require either a significant demand shock or a supply surge — neither of which appears likely in OC's constrained geographic and regulatory environment.
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