Last Updated: November 2025
Reading Time: 9 minutes
Author: KEYZ Commercial Real Estate Advisory Team

Southern California’s commercial leasing market is entering 2026 with renewed clarity after several years of adjustment. Leasing decisions are no longer driven by short-term reactions, but by long-term operational strategy, capital discipline, and market fundamentals.

Across Southern California and the Inland Empire in particular, one trend stands out more than any other: smaller, functional flex spaces are experiencing sustained and unprecedented demand. This shift is reshaping how property owners, investors, and tenants approach leasing as we move into the next cycle.

This article outlines the most important commercial leasing trends in Southern California heading into 2026 and explains why flex space has become one of the most resilient asset types in the market.

Southern California Commercial Leasing Market Overview

By the end of 2025, commercial leasing activity across Southern California showed clear signs of stabilization. Market participants adjusted to higher interest rates, recalibrated growth expectations, and focused on efficiency rather than expansion.

According to Cushman and Wakefield MarketBeat reports
leasing fundamentals across industrial, flex, office, and retail segments began to normalize, with vacancy trends varying significantly by asset class and submarket.

Forward-looking sentiment also improved. The UCLA Anderson Forecast and Allen Matkins commercial real estate survey indicated increasing confidence among owners, developers, and occupiers as leasing conditions stabilized heading into late 2025.

Why Smaller Flex Spaces Are Leading Leasing Demand

Flex space has emerged as one of the strongest-performing segments in Southern California commercial real estate leasing. These properties combine warehouse, light industrial, office, and showroom uses into a single, efficient footprint.

Market data from Colliers Inland Empire Industrial Research continues to show that small-bay and mid-size flex spaces lease faster than large-format properties, particularly in infill and logistics-adjacent submarkets.

Why Tenants Are Choosing Flex Space

Lower total occupancy costs compared to traditional office or industrial
Operational adaptability for evolving business models
Easier lease commitments and renewal flexibility
Functional layouts that support storage, office, and customer-facing uses

Flex space is especially attractive to contractors, medical operators, light manufacturers, e-commerce businesses, and regional distributors.

Industrial Leasing Trends in Southern California

Industrial leasing remains the backbone of the Southern California commercial real estate market. However, demand is increasingly concentrated in functional, right-sized industrial properties, not just large distribution facilities.

According to Colliers Inland Empire Industrial Research, leasing velocity remains strongest in properties under 20,000 square feet, particularly those with clear height, loading access, and proximity to population centers.

Additional insights from Cushman and Wakefield MarketBeat reports confirm that industrial vacancy remains comparatively tight in key Inland Empire and Greater Los Angeles submarkets, supporting stable lease rates heading into 2026.

Office Leasing Trends Continue to Shift

Office leasing trends in Southern California continue to evolve. Traditional large office footprints face ongoing challenges, while smaller, purpose-driven office spaces remain viable.

Insights from Kidder Mathews Southern California market reports

show that demand is concentrated in:

Medical office properties
Professional service users
Office components within flex and mixed-use developments

Tenants are prioritizing efficiency, accessibility, parking, and lease flexibility over size or class.

Retail Leasing Shows Selective Strength

Retail leasing has stabilized in necessity-based and service-oriented categories. Industry coverage from Bisnow Southern California

highlights continued tenant interest in:

Food and beverage concepts
Medical and wellness services
Fitness and service-oriented retail
Neighborhood-serving centers

Retail success remains location and demographic dependent, with experiential and service uses outperforming discretionary retail.

Lease Rates, Vacancy, and Landlord Concessions

Lease rates across Southern California moderated in 2025, but well-located industrial and flex assets continue to outperform broader market averages.

Data from Cushman and Wakefield MarketBeat and Kidder Mathews indicates:

Lowest vacancy levels in industrial and flex properties
Elevated vacancy in certain office submarkets
Stabilizing vacancy in necessity-based retail corridors

Landlord concessions have narrowed for high-demand asset types, particularly small flex and industrial properties, as tenant competition increases.

Inland Empire Commercial Leasing Dynamics

The Inland Empire remains one of the most active commercial leasing regions in Southern California due to its strategic location, labor availability, and infrastructure.

Research from Colliers and Kidder Mathews consistently points to:

Strong tenant absorption
Limited availability of small-bay space
Continued demand for functional industrial and flex assets

For tenants, early planning is essential. For owners, this environment supports long-term leasing stability.

What Property Owners Should Do Heading Into 2026

Property owners who adapt to tenant behavior will outperform those waiting for prior market conditions to return.

Owner Strategies That Perform

Reposition underutilized office space into flex configurations
Invest in functional improvements rather than cosmetic upgrades
Price leases based on current absorption, not peak-cycle expectations
Partner with advisors who understand submarket-level demand

What Tenants Should Prepare For

Tenants entering 2026 should expect continued competition for the most functional spaces.

Tenant Best Practices

Begin lease planning earlier than in prior cycles
Prioritize operational efficiency over aesthetics
Maintain flexibility on location where possible
Work with local advisors to access off-market opportunities

How KEYZ Commercial Advises Clients

At KEYZ Commercial, we provide advisory services grounded in local market intelligence and data-driven strategy. Our team works with property owners, investors, and tenants across Southern California to navigate leasing decisions with confidence.

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👉KEYZ Commercial

Commercial Leasing Trends in Southern California Heading Into 2026