A Guide to Commercial Lease Disputes in California

A commercial lease dispute can put far more than a monthly rent payment at risk. It can threaten a company’s location, customer access, inventory, build-out investment, and ability to keep operating. This guide to commercial lease disputes explains how California business owners, landlords, and commercial tenants can identify the real issue early, preserve their leverage, and take decisive action before a disagreement becomes a costly court battle.

Commercial lease conflicts are rarely solved by relying on a handshake, a text message, or what one side believed the deal was supposed to mean. The written lease controls in most situations. Yet even a detailed lease can create major disputes when business conditions change, maintenance failures occur, rent goes unpaid, or either party fails to meet a deadline.

What Causes Commercial Lease Disputes?

The dispute may appear simple at first: a landlord says rent is late, or a tenant says the building is unusable. In reality, the legal and financial issues often run much deeper. The first question is not merely who is upset. It is what the lease requires, whether a breach occurred, and whether the non-breaching party followed the proper process to enforce its rights.

Common commercial lease disputes involve unpaid rent and late fees, operating expense or CAM charge disagreements, repair and maintenance duties, property damage, security deposit claims, lease renewal rights, early termination, subleasing restrictions, use clauses, and alleged defaults. In retail, office, industrial, and entertainment-related leases, access, parking, signage, noise, exclusivity provisions, and landlord construction can also become high-stakes issues.

A tenant might believe the landlord promised a certain condition, amenity, or exclusive business use. The landlord may respond that the lease contains no such guarantee. A business owner may stop paying rent because of serious water intrusion or code issues, while the landlord argues that rent withholding is not permitted under the contract. These cases turn on the specific language of the lease, applicable California law, the parties’ conduct, and the evidence available.

Start With the Lease, Not Assumptions

Before sending a demand letter or refusing payment, review the complete lease package. That means the original agreement, all amendments, addenda, guaranties, notices, exhibits, assignment documents, and email communications that may clarify a disputed term.

Pay close attention to the default and notice provisions. Commercial leases commonly require written notice and a specific opportunity to cure before a party can declare a default, terminate the lease, seek eviction, or pursue damages. Missing a notice deadline or sending notice to the wrong address can weaken an otherwise strong claim.

The same is true for clauses governing attorney’s fees, dispute resolution, limitation of liability, force majeure, insurance, indemnity, and personal guaranties. A tenant who signed a personal guaranty may face exposure beyond the business entity itself. A landlord that ignores an attorney’s fee clause may underestimate the real cost of litigation.

Read Operating Expense Provisions Carefully

CAM and operating expense disputes deserve special attention. A lease may require tenants to pay a share of common-area maintenance, property taxes, insurance, management fees, utilities, or capital expenditures. The issue is often not whether charges are allowed, but whether the amount was calculated correctly and falls within the lease’s definition of recoverable expenses.

Tenants should request supporting statements, invoices, reconciliations, and the calculation used to allocate expenses. Landlords should maintain clean, defensible records and apply lease provisions consistently. Vague billing practices can turn a routine accounting question into a breach-of-contract claim.

Preserve Evidence Before the Conflict Escalates

Commercial lease disputes are won and lost on documentation. If a roof leak damages equipment, photographs taken immediately matter. If a landlord denies access to a premises, written records of the dates, lost business, and communications matter. If rent was paid, proof of payment and account statements matter.

Preserve the lease documents, emails, text messages, invoices, maintenance requests, inspection reports, photographs, video, payment records, and communications with contractors or property managers. Do not alter records, delete messages, or rely solely on informal conversations. A well-organized file gives your legal team the ability to assess the claim quickly and puts the other side on notice that unsupported allegations will not carry the day.

For businesses that rely on a physical location, calculate the operational impact as well. Lost sales, relocation expenses, equipment damage, diminished access, employee disruption, and reputational harm may be relevant depending on the facts and lease terms. Proving damages requires more than saying the dispute hurt the business.

Do Not Create a Default While Trying to Solve One

A common mistake is reacting emotionally. A tenant may stop paying all rent after a maintenance dispute. A landlord may lock out a tenant or change access codes without carefully following the lease and California legal requirements. These actions can create separate claims and increase exposure.

There are situations where a tenant may have strong grounds to challenge the landlord’s performance, seek repairs, pursue damages, or negotiate a rent adjustment. But the correct approach depends on the lease language and the severity of the alleged breach. Continuing to perform under protest, paying undisputed amounts, or placing disputed sums in a separate account may be strategically wiser than taking unilateral action. It depends on the facts, the contract, and the remedy being pursued.

Landlords also need to proceed with discipline. If a tenant is in default, the landlord should confirm the default, comply with contractual notice obligations, document the balance due, and avoid self-help measures that could expose the property owner to substantial liability. Commercial eviction and unlawful detainer actions move on strict timelines. Precision matters.

Negotiation Is Often the Strongest First Move

Not every commercial lease dispute should begin with litigation. A business may need to preserve its location, customer relationships, or supply chain. A landlord may prefer a reliable tenant and a practical solution over a vacant space and a prolonged lawsuit. Negotiation can produce a lease amendment, payment plan, rent abatement, repair schedule, early surrender agreement, release, or revised operating expense structure.

That does not mean negotiating from weakness. Effective negotiation begins with a clear legal position, supporting documents, a realistic damages analysis, and a defined outcome. The party that understands the lease and can credibly pursue formal remedies usually enters the discussion with more leverage.

A carefully drafted demand letter can be a powerful tool. It should identify the relevant lease provisions, explain the breach, state the remedy requested, preserve rights, and establish a deadline for response. It should not make threats that cannot be supported or admissions that later damage the case.

When Mediation, Arbitration, or Litigation Makes Sense

Many commercial leases require arbitration or mediation before a lawsuit can proceed. Those provisions must be evaluated early. Arbitration can be more private and sometimes faster than court, which may matter to high-profile businesses and public-facing professionals. However, arbitration can also be expensive, limit discovery, and provide fewer opportunities to appeal an unfavorable result.

Mediation is different. A mediator does not decide the case but helps the parties work toward a negotiated resolution. It is often valuable when both sides have business reasons to avoid a public fight or when the factual record creates risk for everyone involved.

Litigation may be necessary where the other party refuses to perform, serious money is at stake, the premises cannot be used as promised, or immediate court relief is needed. A lawsuit may seek unpaid rent, damages, declaratory relief, specific performance, rescission, or other remedies. In urgent cases, a party may need to consider whether injunctive relief is available to prevent ongoing harm.

A Guide to Commercial Lease Disputes: Get Counsel Involved Early

The earlier a commercial lease dispute is evaluated, the more options may be available. Waiting until an eviction notice arrives, a lockout occurs, or a lawsuit is filed can limit negotiating power and force rushed decisions. Experienced business litigation counsel can review the lease, evaluate potential exposure, prepare formal notices, negotiate a resolution, and litigate aggressively when a fair agreement is no longer possible.

At Abkarian & Associates, serious business disputes are approached with the same level of preparation and force required in high-value litigation. Whether you are protecting a growing company, commercial property, investment, or professional reputation, the goal is not simply to respond to a dispute. It is to take control of it before it controls your business.

A commercial lease should support your business plan, not become the reason it stalls. When the agreement breaks down, act promptly, keep the record clean, and make every decision with the lease, the evidence, and the long-term value of your business in view.