Key Considerations When Subleasing Commercial Space in Southern California

Subleasing can offer financial relief, but it’s essential to structure the agreement carefully to avoid unexpected costs.

Subleasing can be a strategic way to secure cost-effective space in Southern California’s competitive real estate market, but without careful execution, it comes with potential pitfalls. 

Whether you’re looking to downsize, test a new location, or share a larger space, secondary lease agreements present both opportunities and challenges. A thorough comprehension of the mechanics, benefits, and key considerations of these agreements for both tenants and landlords is essential to ensuring a smooth and legally sound arrangement, one that is financially advantageous to all parties involved.


What is a Sublease and Who Are the Main Parties Involved?

A sublease allows the primary lease holder (sublessor) to rent out part or all of the leased space to a subtenant while remaining contractually responsible under the primary lease. Unlike a lease assignment, which transfers all obligations to a new tenant, a sublease keeps the sublessor liable to the property owner.

Because the subtenant pays rent to the sublessor—not the landlord—subleasing adds legal and financial complexity. Most leases require landlord approval, and a detailed sublease agreement is essential to clarify rent, permitted use, and liability.

  • Key Parties & Responsibilities

    • Sublessor/Original Tenant – Remains responsible for lease compliance, rent payments, and property upkeep. Must obtain landlord consent and mitigate risks through a well-structured sublease agreement.

    • Subtenant/Secondary Occupant – Must adhere to both the sublease and original lease. Lacks direct rights with the property owner and may face operational restrictions.

    • Landlord – Retains authority over the property, requiring approval for subleasing, enforcing lease terms, and controlling modifications to the space.
      Maximizing Lease Terms and Negotiation Leverage for SoCal Commercial and Industrial Tenants 

To ensure a mutually beneficial arrangement, all parties should review lease terms, obtain necessary approvals, and create a clear, mutually beneficial sublease agreement.


Important Legal and Lease Considerations for Subleasing Commercial Space

When drafting a secondary lease agreement, it’s essential to outline key terms in a detailed agreement, including rent, payment structure, duration, permitted use, and maintenance responsibilities. A thorough review of the lease can reveal restrictions and potential risks, such as liability for subtenant defaults or additional conditions. Since most leases require written consent, securing landlord approval should be factored into the process.

  • Check for a No-Subletting Clause – Look for “No Assignment or Subletting Without Landlord’s Consent” in the lease.

  • Confirm Approval Requirements – Landlords may require financials, credit checks, or a 30-60 day approval period.

  • Understand Rent Differentials – If the subtenant pays less, you cover the shortfall; landlords may claim a share of rent surplus.

  • Clarify CAM Fees – Triple-net (NNN) leases may require secondary occupants to contribute to property costs.

  • Specify Security Deposits – Define who holds it and refund conditions.

  • Address Early Termination Risks – If the lease allows early termination, the subtenant could be forced to vacate.

  • Ensure Zoning & Permitted Use Compliance – A secondary occupant’s business must align with the master lease terms.

  • Define Insurance Requirements – Confirm liability coverage meets landlord requirements.

By ensuring your sublease agreement is legally sound, you’ll protect your business from legal issues and safeguard continuous cash flow by keeping operations running smoothly.


Financial and Tax Considerations of Subleasing in SoCal

Subleasing can offer financial relief, but it’s essential to structure the agreement carefully to avoid unexpected costs. Typically, the primary lease holder will charge the subtenant at least the same amount, if not more, than what they pay the landlord to ensure they cover their financial obligations. Regardless of whether the subtenant pays on time, the original tenant remains responsible for paying the full rent to the landlord. This makes it crucial to factor this into the sublease agreement.

Both parties need to account for additional costs such as utilities, maintenance, and insurance. For example, if the property has shared amenities like parking, janitorial services, or security, the subtenant may be required to contribute to these operating expenses, or the sublessor may need to cover them upfront and pass them on. Clearly specifying these shared expenses in the sublease agreement is key to avoiding future disputes.

The original lease may also contain clauses that affect the financial arrangement, such as escalating property taxes or increases in insurance premiums, which could alter the overall cost structure.

Finally, subleasing can have tax implications. If the sublessor generates any profit from the arrangement, that income is most likely taxable. California’s commercial rental tax laws can be complex, and local regulations in cities like Los Angeles or Compton can add additional layers of complexity. It’s crucial to research city, state, and federal law to ensure compliance. Consulting with a tax professional is highly recommended to ensure the sublease is structured in a way that aligns with all relevant tax regulations.

Strategic Benefits of Subleasing in Commercial Real Estate

Subleasing presents a strategic, cost-efficient approach for businesses seeking to downsize, scale operations temporarily, or explore new locations, all without the long-term commitment of a full lease. Below are several scenarios in which subleasing could be the optimal solution:

  • Short-term Space Needs: If you have temporary space requirements, subleasing offers flexibility to avoid a long-term lease commitment while still having access to prime locations.

  • Downsizing or Adjusting Your Footprint: For companies looking to reduce their square footage due to changing business conditions or downsizing efforts, subleasing unused or excess space can help offset costs.

  • Testing a New Market or Location: Subleasing allows you to test a new geographic area or business model without the risk of a full-term commitment. This can be particularly useful in dynamic markets like Southern California.

  • Cost Reduction: In high-demand markets like LA or Orange County, secondary lease agreements can provide an opportunity to lock in a competitive rate for space that you might not be able to afford under a direct lease.

Before proceeding with subleasing, it's essential to carefully evaluate the terms of the original lease, financial obligations, and potential risks. Consulting with an expert and staying informed about market trends will ensure you make a decision that aligns with both your short- and long-term business goals.


How to Strategically Navigate Southern California’s Commercial and Industrial Real Estate Market

Partnering with industry experts like The Klabin Company can significantly elevate your decision-making process — with over 60 years of experience specializing in the Southern California industrial and commercial markets, we are dedicated to delivering unparalleled service and expertise tailored to your needs. Our deep knowledge of local market dynamics, coupled with our commitment to integrity and innovation, equips our clients with critical insights into emerging trends and opportunities. We prioritize transparency and collaboration, ensuring that your strategy aligns seamlessly with your business’s growth and operational objectives. By leveraging our extensive network and expertise, you can navigate the complexities of the market to position your business for sustained success in this dynamic and competitive environment.


This blog post is provided for informational purposes only and does not constitute legal, financial, or professional advice. Real estate laws and regulations vary by jurisdiction, and the information herein may not be accurate or applicable to your specific situation. Before making any real estate decisions, consult a qualified local real estate attorney, financial advisor, or other relevant professional. The Klabin Company is not liable for any actions taken based on the information in this article.