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Realistic Cap Rates for Flex Industrial in Kearny Mesa San Diego in 2026

What are the realistic cap rates and absorption risks for buying a flex industrial property in Kearny Mesa, San Diego in 2026 compared to holding cash or investing in another asset class?

Stabilized multi-tenant flex in Kearny Mesa currently trades at 4.75% to 5.50% cap rates, with value-add product stretching to 7.00%, but countywide industrial vacancy has hit 9.6%, a 15-year high, making absorption risk the central question for any investor weighing this against a 4.5% to 5.0% cash yield.

Why Kearny Mesa Flex Industrial Matters Right Now in San Diego

If you’re sitting on capital in 2026, you already know the dilemma. Cash is earning a reasonable yield for the first time in years, and that makes the bar higher for any real estate deployment. So why would you move that money into a flex industrial asset in Kearny Mesa?

Here’s the honest picture. San Diego’s industrial sector spent most of the past decade as one of the top-performing commercial asset classes in the country, fueled by sub-4% vacancy and strong rent growth. That momentum has cooled. Countywork industrial vacancy climbed to 9.6% in Q1 2026, and availability reached 13.0%, both 15-year highs according to Kidder Mathews data. At the same time, positive net absorption returned in Q1 2026, totaling 250,483 square feet after multiple quarters of negative absorption.

What does that actually mean for you? It means you’re looking at a market that’s mid-correction, not collapsing. And mid-correction markets are where experienced investors tend to find their entry points, if they understand the risks.

Where Kearny Mesa Flex Industrial Cap Rates Actually Land in San Diego

Let me walk you through the real numbers, not theoretical projections.

Stabilized multi-tenant flex in Kearny Mesa and adjacent Miramar currently trades at 4.75% to 5.50% cap rates. If you’re looking at single-tenant NNN industrial with long-term lease commitments, cap rates compress to 4.25% to 5.00%. Value-add and lease-up product, where you’re taking on occupancy risk and repositioning the asset, can deliver 5.50% to 7.00%+ on current income.

For context, institutional deals across San Diego’s broader industrial market are trading in the 5% to 6% range. That’s a meaningful uptick from early 2022, when buildings were changing hands at roughly 3% cap rates.

One major data point that underscores Kearny Mesa’s institutional appeal: in Q2 2025, a 202,547-square-foot flex property in the submarket traded for $80 million, roughly $395 per square foot. H.G. Fenton’s acquisition of Kearny Mesa West further signals that sophisticated investors see long-term value in well-located infill industrial here.

With 18 years of experience and over 275 transactions closed across San Diego County, I can tell you that what separates smart commercial investors from everyone else is their ability to read the gap between current cap rates and where they’ll be 36 months from now. Right now, that gap feels wider than usual, and that’s where the opportunity lives.

Absorption Risks You Need to Understand Before Buying in Kearny Mesa

This is the section where a cloudy mind can’t make decisions. So let me give you the cleanest possible picture.

San Diego’s industrial vacancy trajectory tells a clear story of transition:

• Pre-2023: Sub-4% vacancy, consistently positive absorption
• Q1 2025: Vacancy at 8.3%, negative absorption of 703,374 SF
• Q3 2025: Vacancy at 9.7%, negative absorption of 454,648 SF
• Q1 2026: Vacancy at 9.6%, positive absorption returns at 250,483 SF

The trend has reversed, but the recovery is fragile. Average asking industrial rents declined to $1.46 PSF NNN, a 3.7% decrease year-over-year, reflecting tenant-favorable conditions. Landlords responded aggressively in late 2025 by lowering rental rates and increasing concessions, which helped generate over 630,000 SF of positive absorption in Q4 2025.

Here’s the risk factor specific to flex: flex properties now account for 60% of sublease space across San Diego, according to Matthews Real Estate data. That’s disproportionate. It tells you that some tenants are shedding flex space more readily than logistics or manufacturing facilities. Additionally, 2.3 million square feet of new flex space was delivered over the past year, mostly in the UC San Diego area, adding to competitive supply.

One investor I worked with was evaluating a multi-tenant flex building near the intersection of Clairemont Mesa Boulevard and Convoy Street. The numbers looked clean on paper, but two of the five tenants had rolling month-to-month leases and the sublease inventory within a mile radius was climbing. We restructured the offer to account for a realistic 12-month absorption timeline on those units, which brought the effective purchase cap rate closer to 6.25%. That recalibration made the deal work; ignoring it would have been a serious miscalculation.

How Flex Industrial in Kearny Mesa Compares to Holding Cash in 2026

You can park your money in a money market account or Treasury bills right now and earn roughly 4.5% to 5.0% with near-zero principal risk and immediate liquidity. That’s a legitimate alternative, and anyone who tells you otherwise isn’t being honest.

So let’s compare directly:

• Cash/T-Bills: 4.5% to 5.0% yield, zero appreciation potential, no tax depreciation, full exposure to inflation erosion
• Stabilized Kearny Mesa Flex: 4.75% to 5.50% current yield, plus depreciation shelter, potential rent growth recovery, and long-term appreciation in an infill location
• Value-Add Kearny Mesa Flex: 5.50% to 7.00%+ current yield, but with occupancy risk, capital expenditure requirements, and a 12-to-24-month stabilization timeline

The spread between cash and stabilized flex is narrow right now, perhaps 50 to 100 basis points. Where flex industrial wins is on the after-tax math. Depreciation, cost segregation, and 1031 exchange optionality create meaningful advantages that a money market account simply cannot replicate.

What I tell my clients is this: if you’re comparing pre-tax yields alone, cash looks competitive. But if you’re deploying capital with a five-to-seven year hold horizon and factoring in depreciation benefits, a well-located Kearny Mesa flex asset should outperform cash on a total-return basis, provided you underwrite absorption risk honestly.

How Kearny Mesa Flex Stacks Up Against Other San Diego Asset Classes

You’re not just choosing between flex industrial and cash. You’re choosing among multiple asset classes in one of the strongest metros in California, with a GDP of $261.6 billion and an unemployment rate of just 4.4% as of late 2025. Here’s how the landscape looks:

• Multifamily (Class B/C): Cap rates of 4.92% to 5.38%, vacancy at a tight 3.3%. Strong fundamentals, but regulatory burden and rent control dynamics add friction.
• Retail (NNN Credit): Cap rates of 4.50% to 5.25%, vacancy around 4.3%. Reliable cash flow with credit tenants, but long-term e-commerce disruption remains a headwind.
• Office: Cap rates of 7.00% to 9.00%+, but vacancy sits at a brutal 19.7%. You’re buying distress, and the hybrid work structural shift is not going away.
• Life Sciences: Vacancy has climbed to 26.9%, a new cycle high. Funding cycles and oversupply make this the highest-risk play in San Diego right now.

A couple I recently advised was torn between deploying $2.5 million into a Kearny Mesa flex property or splitting the capital between a Class B multifamily in Clairemont Mesa and a money market ladder. After we modeled the five-year returns, accounting for depreciation, rent growth assumptions, and their tax bracket, the flex property won on total return by roughly 180 basis points annually, but only because we priced in realistic vacancy assumptions and avoided overpaying at the front end.

What the Kearny Mesa Community Plan Means for Your Investment Thesis

Here’s where Kearny Mesa gets interesting beyond the current numbers. The updated Kearny Mesa Community Plan is paving the way for more residential and mixed-use development in what has historically been a predominantly industrial zone. For you as an investor, this creates a dual upside.

First, repositioning potential: Assembly Bill 507, which took effect in July 2026, streamlines the conversion of underutilized office and retail properties into residential housing. If your flex building sits on land that qualifies under the new Sustainable Development Area designation, your exit strategy just expanded significantly.

Second, scarcity premium: as parcels get rezoned for residential use, the remaining industrial-zoned land in Kearny Mesa becomes more scarce. That supply constraint is exactly what drove industrial values in San Diego for the past decade, and it’s likely to reassert itself once the current vacancy wave is absorbed.

Market experts predict vacancy should stabilize around 6% once current deliveries are digested and interest rates begin to ease. If that timeline is 12 to 18 months, you’re looking at a window where buying at today’s cap rates could position you for meaningful compression on the other side.

Frequently Asked Questions

What is a realistic cap rate for flex industrial in Kearny Mesa in 2026?

Stabilized multi-tenant flex properties in Kearny Mesa currently trade at 4.75% to 5.50% cap rates. Value-add properties with lease-up risk can trade at 5.50% to 7.00% or higher. These figures represent a significant increase from the roughly 3% cap rates seen in early 2022, reflecting the elevated interest rate environment.

How does Kearny Mesa flex industrial compare to a money market yield in 2026?

Money market and T-bill yields sit at roughly 4.5% to 5.0% with near-zero risk. Stabilized flex offers a comparable or slightly higher current yield, but the real advantage comes from depreciation benefits, potential appreciation, and 1031 exchange optionality that cash investments cannot provide.

What is the current vacancy rate for San Diego industrial space?

Countywide industrial vacancy reached 9.6% in Q1 2026, with total availability climbing to 13.0%. Both figures represent 15-year highs. However, positive net absorption returned in Q1 2026 at 250,483 SF, suggesting the market is beginning to stabilize.

Why is flex space seeing higher sublease availability in San Diego?

Flex properties now account for 60% of sublease space across San Diego County, up from a much smaller share historically. This reflects tenants shedding excess flex space more readily than dedicated logistics or manufacturing facilities, creating a temporary overhang that buyers should factor into their underwriting.

What was the largest flex industrial sale in Kearny Mesa recently?

A 202,547-square-foot flex property in Kearny Mesa traded for $80 million in June 2025, equating to roughly $395 per square foot. This institutional-grade transaction demonstrates continued investor conviction in the submarket’s fundamentals.

Is Kearny Mesa flex industrial safer than investing in San Diego office space?

Office vacancy in San Diego sits at 19.7%, compared to 9.6% for industrial. Office cap rates range from 7.00% to 9.00%+, reflecting significantly higher risk. The structural shift toward hybrid work makes office a distressed play, while flex industrial benefits from more durable demand drivers.

How does flex industrial compare to multifamily in San Diego right now?

Class B and C multifamily properties show vacancy of just 3.3% with cap rates of 4.92% to 5.38%. Multifamily offers tighter vacancy, but flex industrial provides higher depreciation benefits and potentially stronger upside if vacancy normalizes to the 6% range.

What impact does the Kearny Mesa Community Plan have on flex industrial values?

The updated plan introduces mixed-use and residential zoning into formerly industrial areas. For existing flex properties, this creates repositioning potential and, over time, a scarcity premium as remaining industrial-zoned land becomes more limited.

How long will it take for San Diego industrial vacancy to stabilize?

Market forecasts suggest vacancy should normalize to approximately 6% once current deliveries are absorbed and economic conditions improve. Most estimates place this timeline at 12 to 18 months from mid-2026, assuming no significant economic disruptions.

Should I wait for lower interest rates before buying flex industrial in Kearny Mesa?

Waiting for rate cuts means competing with more capital entering the market when rates decline. Fannie Mae projects mortgage rates falling to roughly 5.9% by late 2026, which could trigger a wave of demand. Buying during a higher-rate window often allows you to negotiate more favorable pricing and concessions.

The Bottom Line

You’re making this decision in a market that’s transitioning, not crashing. Kearny Mesa flex industrial offers cap rates of 4.75% to 5.50% on stabilized product, with value-add opportunities stretching higher. The absorption risk is real, with countywide vacancy at 15-year highs and flex space disproportionately represented in sublease inventory. But the trend line is improving, the Community Plan creates long-term upside, and the after-tax math favors real assets over cash for patient capital.

If you want to talk through these numbers in the context of your specific tax situation, hold period, and risk tolerance, I’m here. With 18 years and over 275 closed transactions across San Diego County, I bring a calm, data-informed approach to every investment conversation. Reach me at 858-405-0002 or through my office at 16516 Bernardo Center Dr., Ste. 300. Let’s build a plan you can feel good about.

*Scott Cheng, Broker Associate, REAL Brokerage, DRE# 01509668. This content is for informational purposes only and does not constitute investment, tax, or legal advice. Consult qualified professionals before making investment decisions.*