How to Write a CAM Dispute Letter That Gets Results

How to Write a CAM Dispute Letter That Gets Results

A CAM dispute letter works when it does one thing well: it makes ignoring you more expensive than resolving the dispute. That means specific numbers, specific lease clause citations, a documented calculation the landlord can't hand-wave away, and a hard deadline.

Vague letters — "we believe there may be errors in our reconciliation" — get vague responses, usually a form letter explaining that the charges have been reviewed and are correct. Letters with a line-by-line math breakdown, a citation to Section 7.3(b)(ii), and a stated $4,200 discrepancy require a substantive response. Landlords know that a tenant who has done the work is a tenant who may escalate, and most disputes settle before anyone pays a lawyer.

The preparation — gathering evidence, running the math — is most of the work. The letter itself is short. This guide walks through both.

40% of CAM reconciliations contain material errors (Tango Analytics/PredictAP, 2023) When you've found an error and calculated the amount, a well-constructed dispute letter is how you recover it.

10 Steps to Write a CAM Dispute Letter

1. Gather your evidence before writing a single word

Do not write the letter until you have all of the following:

• Your executed lease, including the CAM exhibit
• The CAM reconciliation statement for the year under dispute
• Any backup documentation received from the landlord (invoices, GL detail, occupancy data)
• Your own calculations — done independently, not just annotating the landlord's numbers

If you don't have backup documentation yet, send an audit rights request first. A dispute letter written without reviewing invoices may miss additional errors and will be weaker than one grounded in the actual records.

2. Calculate the exact overcharge — never estimate

Every number in your letter must be derived from a calculation you can show. The structure is:

1. What the lease permits: clause citation + the correct formula
2. What the landlord charged: figure from the reconciliation statement
3. The difference: your overcharge in dollars

Do this for each disputed item separately. Do not bundle them into a single "we believe we were overcharged approximately $X." Precision signals that you've done the analysis; approximation signals that you haven't.

Example:

• Management fee clause (Section 6.4): 5% of Controllable Operating Expenses, excluding taxes and insurance
• Controllable Operating Expenses (from GL detail): $312,500
• Correct management fee: $312,500 × 5% = $15,625
• Charged management fee (from statement): $18,200
• Overcharge: $2,575

3. Choose your tone deliberately

You have three choices, and the right one depends on your relationship with the landlord and the size of the discrepancy:

Collaborative: "We've identified what appears to be a calculation inconsistency and would like to resolve it quickly." Use for smaller amounts, long-term landlord relationships, or first-time disputes.

Neutral: "Pursuant to Section X, our calculation differs from the statement as follows..." State facts. No warmth, no accusation. Use when you've had prior issues or the amount is material.

Assertive: "The charges are inconsistent with the lease terms. We are requesting a credit within 30 days. Absent resolution, we will consider our additional remedies." Use for significant overcharges, repeated patterns, or where the landlord has already stonewalled a prior request.

Do not mix tones. Pick one and write the whole letter in that register.

4. Structure the letter correctly

Follow this structure, in this order:

Date and identifying information: Date sent, lease date, property address, your tenant name, the audit year under dispute.

Subject line: "Formal CAM Dispute Notice — [Property Name], Lease Dated [Date], Audit Year [YYYY]"

Statement of facts: Two to three sentences describing what you received (the reconciliation), when you received it, and what audit rights you exercised.

Disputed items: For each disputed line item, a separate subsection with:

• Item description
• Lease clause that governs it (with section number)
• Landlord's charge
• Your calculation
• Dollar discrepancy

Total discrepancy: Sum all disputed items. State the total credit you're requesting.

Requested remedy: Specific request — usually a credit on the next monthly payment, or a direct refund if the amount exceeds one month's estimated payment.

Response deadline: "Please respond in writing within thirty (30) days of the date of this letter."

Closing: Your name, title, contact information.

5. Cite the specific lease clause by section number

"Our lease excludes capital expenditures" is not as useful as "Section 7.3(b)(ii) of the Lease provides that Operating Expenses shall not include capital expenditures as defined by GAAP."

Quote the clause language directly. Don't paraphrase. The landlord's attorney will read the actual lease language — if you've already quoted it accurately, you've saved them the step of finding a way to reinterpret it.

If multiple clauses apply to a single dispute item (for example, a management fee dispute that involves both the definition of Controllable Operating Expenses and the fee percentage), cite each one.

6. State the exact dollar amount on every disputed item

Round numbers look like estimates. "$2,575.00" looks like math. State the exact dollar figure for each disputed item and for the total. Show the arithmetic — the formula, the inputs, the result. If you're disputing a pro-rata share error, show: your square footage ÷ the correct denominator = the correct percentage × total CAM pool = correct charge. Then show the landlord's charge and the difference.

7. Include a firm response deadline

30 days is standard. 14 days is reasonable for straightforward disputes (e.g., a math error, not a classification dispute). State the deadline explicitly: "Tenant requests Landlord's written response no later than [date]."

This matters because it starts a clock. If the landlord misses the deadline, your follow-up letter can note that fact. If you eventually need to involve an attorney or escalate, the documented non-response is relevant.

8. Send via certified mail and email simultaneously

Send by certified mail, return receipt requested — this creates a legally reliable timestamp. Send by email to your property manager and landlord's legal contact on the same day, with the note "a hard copy has been sent via certified mail."

Retain: the certified mail tracking confirmation, the return receipt (once returned), and the email send confirmation with timestamps.

9. Follow up in writing if you receive no response

If you receive no response by your deadline, send a written follow-up — email is sufficient — referencing your original letter by date. Give an additional 10 business days. State clearly that you will treat the lack of response as a denial and will consider your options.

Document everything. The pattern of communication matters if you escalate.

10. Know when to escalate to an attorney

Escalate if:

• The overcharge exceeds one month's rent and the landlord is non-responsive
• You've received a denial that misrepresents your lease language
• The same error pattern appears across multiple years
• You've been denied audit rights in writing

At that point, a single letter from an attorney familiar with commercial leases often resolves disputes that months of tenant correspondence did not. The cost of a one-hour attorney consultation is almost always less than the disputed amount.

"I built CAMAudit because a good dispute letter requires exact numbers and exact lease citations — and both require doing the audit first. Our tool runs the audit and generates a draft dispute letter with your lease language extracted, so tenants start from a stronger position." — Angel Campa, Founder of CAMAudit

Common Mistakes

Writing the letter before completing the math. If you send a letter saying "approximately $3,000–$5,000" you've told the landlord you haven't finished your analysis. Wait until every number is exact.

Missing the audit window. Your right to audit — and therefore to dispute — is typically limited to 12–24 months from when you received the reconciliation. If you've found an error in an old statement, check your lease's deadline before investing time in a letter you may not be able to enforce.

Sending only by email. Email is fast but doesn't create the legal timestamp that certified mail provides. In a dispute that escalates, "I sent you an email" is much weaker than a signed return receipt dated three months ago.

FAQ

What if the landlord denies my dispute without explanation? Request the explanation in writing. A denial letter that says only "your charges have been reviewed and are correct" is not a substantive response. Follow up asking specifically which part of your calculation is incorrect and what the correct figure should be. Put that request in writing. If they still don't engage, you have a documented pattern of non-response, which strengthens your position if you escalate.

Can I withhold rent while the dispute is pending? Almost certainly not — most commercial leases prohibit this explicitly, and doing so creates a separate default that the landlord can use against you. Pay your regular rent and monthly CAM estimates. The dispute is about the reconciliation, not your ongoing obligations. Withholding gives the landlord a procedural weapon to shift focus away from the underlying dispute.

Does CAMAudit generate the dispute letter for me? Yes. After the audit is complete, CAMAudit generates a dispute letter draft that includes the specific overcharge amounts, the lease clause citations extracted from your document, and a structured summary of each disputed item. You review, adjust the tone if needed, and send. The $79 audit includes the letter — you don't pay separately for it.