CAM Reconciliation Letter to Tenant: Required Components and Response Guide

The Purpose of the Reconciliation Letter

The reconciliation letter is the formal communication that closes out a CAM year. It converts a year's worth of estimates into a final billing — either collecting additional amounts from the tenant or issuing a credit.

For landlords, it's also a legal document. The delivery date typically starts the tenant's audit rights window, and the contents determine whether the landlord has met the disclosure requirements that make the statement binding.

For tenants, it's a billing you have the right to verify before paying.

This guide covers both perspectives. Landlords will use it to draft defensible letters; tenants will use it to evaluate what they've received.

What Belongs in a CAM Reconciliation Letter

Mandatory Components (Landlord)

1. Identification block

• Property name and address
• Tenant name and suite number
• Reconciliation period (e.g., "January 1, 2025 – December 31, 2025")
• Date of the letter (establishes the audit window start)

2. CAM pool summary

Total eligible CAM expenses for the property for the year. If the lease requires disclosure of individual line items, include an itemized schedule. If not, at minimum provide a category-level summary:

3. Pro-rata share calculation

Show the math explicitly:

• Tenant rentable area: 15,000 SF
• Denominator (leasable area per lease definition): 270,000 SF
• Pro-rata share: 15,000 ÷ 270,000 = 5.556%

Disclosing the denominator is protective for the landlord — it invites the tenant to verify it and reduces the chance of a denominator dispute surfacing during audit.

4. Gross-up disclosure (if applicable)

If gross-up was applied, disclose it here:

• Actual occupancy during reconciliation period: 78%
• Gross-up threshold per lease: 95%
• Variable expenses grossed up: $542,000 actual → $735,143 grossed up
• Fixed expenses (unchanged): $558,000

For tenants who haven't seen gross-up applied before, a brief plain-English explanation prevents confusion: "Your lease provides that variable CAM expenses are adjusted to reflect 95% occupancy. Because the property averaged 78% occupancy in 2025, variable expenses have been adjusted upward to what they would have been at the lease threshold."

See the CAM gross-up calculation guide for the full methodology.

5. Cap disclosure (if applicable)

If a CAM cap was applied, show the cap calculation:

• Prior-year controllable CAM (base for cap): $1,050,000
• Cap rate: 5%
• Maximum allowable controllable CAM: $1,102,500
• Actual controllable CAM (after gross-up): $1,293,143
• Cap applied: Yes — controllable CAM capped at $1,102,500

6. Tenant's CAM charge for the year

Total pool (after adjustments) × pro-rata share = tenant's annual charge.

Example: $2,102,500 × 5.556% = $116,815

7. Reconciliation against estimates

8. Payment instructions and deadline

State the payment due date (typically 30 days from letter date) and payment method. Reference the lease clause that governs the payment obligation.

Writing the Letter: Tone and Format

For Landlords

Keep the letter factual and direct. Don't editorialize about expense increases. Don't apologize for true-up amounts. The letter is a statement of fact derived from the lease and the year's actual expenses.

Structure:

1. Opening paragraph: identifies the reconciliation year and the purpose of the letter
2. Expense summary table (or reference to attached schedule)
3. Pro-rata share calculation
4. Gross-up/cap disclosure (if applicable)
5. Reconciliation table (annual charge vs. estimates paid)
6. Payment instructions
7. Audit rights notice (many landlords include a reminder of the tenant's audit window to demonstrate good faith)

Avoid language that invites dispute by being vague. "As you may be aware, costs have risen across the portfolio" is less defensible than specific line-item documentation.

For the overall process context, see CAM expense reconciliation process.

For Property Managers Drafting for Multiple Tenants

If you're sending letters to 40+ tenants, use a template with a mail-merge for tenant-specific fields. The lease-specific fields (gross-up threshold, cap rate, denominator definition) need to be pre-populated from the lease abstract — don't rely on memory or a system default.

A CAM reconciliation checklist helps ensure every required component is present before letters go out.

How Tenants Should Respond

Within 30 Days of Receipt

First, verify the delivery date on the letter — that's typically when your audit window starts.

Then check each component of the letter against your lease:

Pro-rata share: Does your lease define the denominator as total leasable area, or does it exclude certain tenants? Pull your lease's definitions section and compare the denominator used in the letter to your lease language.

Gross-up: Did the landlord apply gross-up? Does your lease have a gross-up clause? What is the threshold and which expense categories qualify? If gross-up was applied and you're not sure it's correct, request the variable/fixed expense split the landlord used.

Cap: Does your lease have a CAM cap? What type — base year, fixed percentage, or cumulative? If your cap is cumulative, request the carryforward schedule.

Management fee: What percentage of total operating expenses does the management fee represent? Check against your lease cap.

For a structured review process, use the CAM variance analysis methodology — it's designed to flag unexplained changes quickly.

If You Find a Discrepancy

Send a written response within 30 days. Your response should:

• Reference the specific letter and reconciliation period
• Cite the specific lease provision you believe the landlord has not followed
• Quantify the discrepancy where possible
• Request either a correction or documentation to explain the item
• State that you are paying the undisputed amount while the dispute is pending

Don't just call. A phone conversation doesn't preserve your audit rights or create a paper trail.

For formal disputes, see cam charges dispute process and cam reconciliation dispute letter guide.

If You Receive a Credit

A credit means you overpaid estimates during the year. Most leases apply the credit against your next rent installment. If you're at lease expiration, you're entitled to a refund check — the lease typically specifies the timeframe (30–60 days).

Verify that the credit calculation is correct before acknowledging it. A credit can also be wrong — if the landlord under-billed estimates, you might receive a smaller credit than you're actually owed.

Timing and Deadlines Reference

For jurisdiction-specific variations in these timelines, see cam reconciliation timeline guide.

Building Dispute-Resistant Letters

The letters least likely to generate disputes share three characteristics:

1. Full calculation transparency — the tenant can follow every step from pool to charge without requesting additional documents
2. Year-over-year comparison — showing prior-year figures lets tenants see the change and understand it without requesting history
3. Proactive audit rights notice — reminding tenants of their rights (rather than hoping they miss the deadline) builds trust and rarely increases actual audit activity

For the full documentation standard, see defensible reconciliation package.