Most leases give tenants 30-180 days to dispute CAM reconciliations. Check your state's deadline before overcharges become harder to recover.
Your clients are leaving money on the table. Refer them and earn 30% lifetime commission.
Refer clients, earn 30% lifetimeYour dispute window is running. Every day you wait is a day closer to losing the claim permanently.
Once the dispute window closes, even a mathematically provable overcharge becomes unrecoverable. Most audits complete in under 15 minutes.
Most tenants have 30 to 180 days. Use that time to act, not to research.
Find My OverchargesSee a sample report firstCommercial tenants typically have 30 to 180 days from receipt of the annual CAM reconciliation to file a written dispute. Retail leases commonly allow 30 to 90 days; office leases allow 60 to 180 days. Miss that window and most leases treat the charges as accepted under the account stated doctrine, making even a provable overcharge unrecoverable for that year. The clock starts when the statement is delivered, not when you open it.
CAM reconciliation dispute window: The contractually-defined period, typically 30 to 180 days from statement delivery, within which a commercial tenant must submit a written dispute of the annual CAM reconciliation. Missing this window can invoke the account stated doctrine, making even mathematically provable overcharges unrecoverable for that year.
"I built CAMAudit partly because of how many tenants I saw lose valid disputes to missed deadlines. The window starts when the email lands in your inbox, not when you read it. CAMAudit's scan takes under fifteen minutes, so there is no reason to let the clock run." — Angel Campa, Founder of CAMAudit
Commercial tenants typically have 30 to 180 days from receipt of the annual CAM reconciliation to file a written dispute. Retail leases commonly allow 30 to 90 days; office leases allow 60 to 180 days. Miss that window and most leases treat the charges as accepted under the account stated doctrine, making even a provable overcharge unrecoverable for that year. The clock starts when the statement is delivered, not when you open it.
40% of commercial CAM reconciliations contain material billing errors (Tango Analytics, 2023)
Tango Analytics (2023) found material errors in 40% of commercial CAM reconciliations reviewed. Many of those overcharges went unrecovered not because the tenant could not identify them, but because they missed the dispute window.
Most commercial leases include one of two provisions governing the dispute process:
Audit rights clause: Gives the tenant the affirmative right to inspect the landlord's books and records and dispute findings within a specified period. This window is typically 12 months for sophisticated office tenants, 6 months for some retail leases, and 30 to 90 days for standard retail leases without explicit audit rights language.
Estoppel or acceptance clause: States that failure to object within a specified period constitutes acceptance. This is the harsher version; it converts inaction into affirmative agreement that the charges were correct. Courts have consistently enforced these clauses.
Common lease language you will find:
The phrase "conclusive evidence" is significant. Courts have held that these clauses are enforceable and that a tenant who pays a reconciliation balance without timely written objection may be barred from claiming a refund even years later.
The dispute window clock starts on the date the statement is delivered, not received by a specific individual. Delivery is typically defined as:
Common delivery misconceptions that cause missed deadlines:
"I was out of the office when it arrived." The clock starts on delivery, not when you personally saw it. If your landlord emails the statement to your lease notice address on January 10 and your window is 60 days, the deadline is March 11 regardless of when you personally opened the email.
"The statement was sent to the wrong address." If the landlord sent to the address specified in the lease for notices, delivery is effective regardless of whether you actually received it. If the landlord sent to an incorrect address, the delivery date is generally disputed.
"I paid the balance so I thought that meant I accepted it." Payment of the undisputed portion is generally required and does not waive your right to dispute. But you must also send the written dispute by the deadline. Payment without a simultaneous written dispute is treated as acceptance in many leases.
| Lease Type | Typical Window | Common Range |
|---|---|---|
| Retail, standard | 30-90 days | 30 to 180 days |
| Retail with explicit audit rights | 6-12 months | 90 days to 24 months |
| Office, standard | 60-180 days | 30 days to 24 months |
| Office with explicit audit rights | 12 months | 6 to 24 months |
| Industrial / warehouse | 30-90 days | 30 to 180 days |
| Medical office | 60-180 days | 30 days to 12 months |
No audit rights clause present: If your lease does not include an explicit audit rights or dispute provision, the default dispute window is typically governed by state law and is shorter than what a negotiated clause would provide. In several states, courts have held that payment without objection bars recovery even without an explicit acceptance clause.
The account stated doctrine is the legal principle that makes missing the dispute window dangerous. Under this doctrine, if a creditor presents an account and the debtor pays it without timely objection, the payment may be treated as an admission that the amount was correct, making later recovery extremely difficult.
In commercial lease contexts, courts have applied this doctrine to CAM reconciliations:
Goldman Copeland Associates v. Goodstein Bros.: The court applied an account stated analysis to bar tenant claims for prior year escalation methodology disputes where the methodology had been used consistently and the tenant had paid without objection for multiple years.
Kramer Levin Naftalis & Frankel, LLP v. Metropolitan 919 3rd Ave., LLC (N.Y. Sup. Ct. 2004): The court dismissed a claim for a tax escalation methodology dispute as time-barred, finding the claim accrued when the statements were first delivered, not when the tenant discovered the problem. Years of payment under the same methodology created a course-of-dealing defense for the landlord.
The key implication: the dispute window is not just a contractual deadline. It is the boundary beyond which the legal doctrines shift against the tenant. Missing it by even one day can transform a mathematically provable overcharge into an unrecoverable claim.
While the dispute window is primarily determined by lease language, state law affects what happens when the lease is silent or ambiguous:
| State | Relevant Statute / Case Law | Notes |
|---|---|---|
| New York | CPLR § 213 (6-yr SOL); courts strictly enforce lease-defined dispute windows | Account stated doctrine frequently applied in NYC commercial lease disputes |
| California | CCP § 337 (4-yr SOL); SB 1103 (2025) expanded tenant protections | SB 1103 provides additional protections for smaller commercial tenants |
| Texas | § 16.004 (4-yr SOL) | No specific commercial CAM statute; lease terms control |
| Illinois | 735 ILCS 5/13-206 (10-yr SOL for written contracts) | Longest SOL provides more lookback opportunity if window is not missed |
| Florida | Fla. Stat. § 95.11 (5-yr SOL) | No specific commercial CAM statute |
Discovery rule states: Several states toll the SOL clock until the tenant discovers the problem. Massachusetts, New Mexico, and Alaska apply the discovery rule to contract claims, meaning the SOL may not have started for tenants who have never received notice of a specific error. However, the discovery rule does not help with an expired lease dispute window, which is a contractual provision independent of the SOL.
The following cases illustrate how courts have applied account-stated principles to commercial CAM reconciliations in the five largest leasing markets:
California: Zinn v. Fred R. Bright Co., 271 Cal.App.2d 597 (1969) establishes that failure to object within a reasonable time implies agreement. California's SB 1103 (codified as Civil Code § 1950.9, effective January 1, 2025) provides additional protections specifically for "qualified commercial tenants": generally tenants with lease terms under 5 years or gross revenues below $5 million, depending on the lease execution date. For covered leases: landlords must provide CAM documentation within 30 days of a written request, and bars charges for costs incurred more than 18 months before billing.
Texas: Dulong v. Citibank (South Dakota), N.A., 261 S.W.3d 890 (Tex. App., Dallas 2008) describes the account stated doctrine and the inference of agreement from retained statements without objection. Texas statute of limitations for breach of written contract: 4 years (Tex. Civ. Prac. & Rem. Code § 16.004(a)).
New York: Stephan B. Gleich & Assoc. v. Gritsipis (App. Term 1st Dep't 2011) states that retaining billing statements and failing to object within a reasonable time implies agreement. New York's contract statute of limitations: 6 years (CPLR § 213(2)).
Florida: Robert C. Malt & Co. v. Kelly Tractor Co., 518 So.2d 991 (Fla. 4th DCA 1988) recognizes the objection-within-reasonable-time requirement. Florida's statute of limitations for written contract actions: 5 years (Fla. Stat. § 95.11(2)(b)). Note: Florida Statute § 95.03 prohibits contractual provisions that shorten the time to sue below the applicable statute of limitations.
Illinois: Illinois courts recognize the account-stated doctrine. Illinois has a 10-year statute of limitations on written contracts (735 ILCS 5/13-206), the longest of any major commercial leasing state, providing the most lookback opportunity if the lease dispute window has not been missed.
Commercial tenants frequently confuse the dispute window with the lookback period. These are separate deadlines that operate independently.
The dispute window is the period after you receive the current year's reconciliation statement during which you must submit a written dispute. It is short (30 to 180 days in most leases) and entirely controlled by your specific lease provision. Missing it forfeits your right to dispute the current year's statement under the account stated doctrine.
The lookback period is how many prior years you can audit when you choose to conduct a historical review. It is governed by two separate limits: (1) your lease's audit rights clause, which often specifies 1 to 3 years of records access, and (2) your state's statute of limitations for written contract claims, which ranges from 3 to 10 years depending on the state.
The critical distinction: You can miss the dispute window for the current year's statement and still conduct a lookback audit of prior years if those years are within the SOL. But a prior year's statement also has its own dispute window. If you paid prior years' statements without dispute, the account stated doctrine may apply to those prior years even if the SOL is technically still open.
Practical guidance for multi-year disputes: If you identify a systematic error (same management fee basis error repeated for 5 years), you should dispute all years simultaneously in a single letter. Waiting to dispute each year separately, even within the annual window, allows the account stated doctrine to progressively bar prior year claims. Simultaneous multi-year disputes are legally sound and practically efficient.
Immediately: Note the delivery date in writing and calculate your audit deadline. If the lease says "60 days from receipt," that clock starts today.
Within the first week: Do a preliminary review. Check the summary against your monthly estimates. Look for obvious anomalies: unusually large line items, categories that seem off, a pro-rata share that looks higher than your percentage of the building.
Before the deadline: If you haven't completed your full review, send written notice of your intent to dispute or audit, even if you haven't identified specific errors yet. This preserves your rights while you continue reviewing. The notice should go to the landlord or property manager in writing, with confirmation of receipt.
If you find specific errors: Follow up with a formal dispute notice identifying each disputed line item, the dollar amount you believe is incorrect, and the lease provision supporting your position.
On payment: Most lease structures allow paying a reconciliation while simultaneously objecting in writing. This preserves your dispute rights. Paying in full with no objection is riskier. Review your specific lease language on whether payment waives audit rights.
Certain business events create concentrated risk for missed CAM dispute deadlines:
Business ownership transitions. When a business changes hands (sale of the company, franchise transfer, key employee departure), knowledge of lease terms and CAM review processes often does not transfer reliably. New owners who discover years of unreviewed reconciliations face a combination of expired dispute windows and accumulated overcharges.
Office or administrative staff changes. The person responsible for reviewing CAM statements changes roles or leaves the company without transferring the process. The incoming person may not know where to look for the annual statement or may not know that a deadline applies.
Periods of rapid expansion. A business that opened 10 new locations in 12 months may not have established a systematic CAM review process. Statements arrive at multiple addresses with different deadlines, and without a tracking system, some inevitably fall through.
Financial distress. During periods of financial difficulty, CAM disputes may seem like a low priority compared to base rent obligations. But CAM overcharges frequently represent recoverable cash that could help a struggling business, and missing the window makes that recovery permanently unavailable.
Lease year vs. calendar year mismatch. If the lease year ends on June 30 but the company's fiscal year ends December 31, the CAM reconciliation arrives on a different cycle than other financial reviews. This calendar mismatch causes statements to be missed or misfiled.
Know your lease deadline. Read the audit rights and dispute provisions in your lease now, before you are time-pressured. Identify exactly how many days you have and what triggers the start of the clock.
Set up a CAM calendar. Most annual reconciliation statements arrive January through April. Set a calendar reminder for December to watch for Q1 statement delivery.
Designate a notice recipient. The lease names a specific person or role to receive notices. Make sure that person or their backup monitors the email and mail address specified in the lease.
Log the delivery date immediately. Note the date and method of delivery. For email, note the timestamp. This is the clock start.
Calculate the deadline immediately. Count forward from the delivery date. Mark it on the calendar with a 5-day early-action reminder.
Start the review immediately. You need enough time to review the statement, identify any errors, calculate the overcharge amounts, and write a dispute letter draft, all before the deadline.
If you miss the dispute window, you are not necessarily without options, but your position is significantly weaker:
SOL-based recovery: Even after the lease dispute window closes, the state's statute of limitations for contract claims may still be open. The SOL does not run from the lease dispute window; it runs from when the claim accrued (typically when the statement was delivered). In states with 6 or 10-year SOLs, a claim may still be litigable even after the lease dispute window has passed, though the account stated doctrine and course-of-dealing arguments will be significant obstacles.
Prospective correction: You can still dispute the current year's charges if you are within the current year's window, even if prior years have expired. Correcting the methodology going forward prevents future overcharges, even if past overcharges are unrecoverable.
Negotiation: Some landlords, particularly those in an ongoing tenant relationship, will negotiate corrections to prior year overcharges as part of a renewal or lease modification, even after the dispute window has technically closed.
Consult an attorney: If the overcharge is large enough that litigation is a realistic option, a commercial real estate attorney can evaluate whether the account stated doctrine applies in your specific situation and whether any exceptions might preserve your claim.
When does the CAM reconciliation dispute window start?
The dispute window starts on the date the reconciliation statement is delivered, not when you personally read it. For electronic delivery, the clock starts when the email is sent to the address specified in your lease. For mail delivery, the clock typically starts on the postmark date plus a few days for transit as specified in the lease. The window does not start when you acknowledge receipt or when you open the statement.
What is the typical CAM dispute window?
Dispute windows vary significantly by lease type: retail leases typically allow 30 to 90 days; office leases often allow 60 to 180 days; leases with explicit audit rights clauses may allow 12 months or longer. The window is defined in your specific lease, not by law. If your lease has no dispute provision, the default is typically governed by state law and may be shorter than any negotiated provision.
What happens if I miss the CAM dispute deadline?
Missing the dispute window does not automatically bar recovery, but it significantly weakens your position. The account stated doctrine may apply, treating your payment as acceptance that the charges were correct. Depending on state law and the specific facts, you may still have options under the state's statute of limitations. Consulting a commercial real estate attorney is advisable if the overcharge amount justifies the effort.
Can I dispute a CAM reconciliation I already paid?
Yes, you can dispute a reconciliation you have already paid, but the dispute deadline still applies. Most leases allow disputes of amounts already paid within the dispute window, and most states' contract law recognizes overpayment claims. The critical requirement is that you must still submit the written dispute before the deadline, even if you have already remitted payment.
What is the account stated doctrine in CAM disputes?
The account stated doctrine is a legal principle that can bar tenant claims against overcharges they paid without timely objection. Courts have applied it in commercial lease contexts to hold that a tenant who pays a CAM reconciliation without disputing it may be treated as having accepted the charges as correct. This doctrine makes prompt review and timely dispute of every reconciliation statement financially critical.
Dispute process:
Understanding rights:
Tools:
