CAM audit engagement letter template
TL;DR: A CAM audit engagement letter is a contract between a tenant and a professional audit firm that defines scope, fees, and timelines before the audit starts. If you hire a CPA or contingency auditor, you need one. If you use CAMAudit, the software handles everything directly without a separate engagement agreement.
"Traditional audit firms work on contingency because they know overcharges are reliable. That model works, but tenants should read the engagement letter carefully before signing. The fee structure, the cap on recovery, and the exclusivity clause all affect how much of your recovery you actually keep." — Angel Campa, Founder of CAMAudit
When you hire a professional audit firm or CPA to review your CAM reconciliations, the relationship starts with an engagement letter. This document is not boilerplate. It defines exactly what will be audited, who pays what, what documents you need to provide, and what happens if the auditor finds nothing. Getting this right before the audit starts prevents disputes between you and your auditor that would otherwise derail the process.
This guide covers what a CAM audit engagement letter includes, what the sample language looks like for the sections that matter most, and the red flags to look for before you sign.
What a CAM Audit Engagement Letter Is
An engagement letter is a formal agreement between a tenant (or their representative) and a professional audit firm that defines the terms of an audit engagement before any work begins. It is essentially a services contract, though in the CAM audit world it often functions more like a contingency fee arrangement.
The letter creates mutual obligations. The tenant agrees to provide the required documents, cooperate with the auditor, and pay the agreed fee structure if overcharges are found. The audit firm agrees to conduct the audit within the defined scope and timeline, deliver a written findings report, and notify the landlord of the dispute as specified in the agreement.
Most commercial tenants who hire traditional audit firms should expect to sign one of these before the firm will begin. The letter protects both parties and prevents misunderstandings about scope ("I thought you were auditing five years, not two"), fees ("the contingency applied to what exactly?"), and deliverables ("where is the formal dispute letter draft I expected?").
A note on self-serve software: CAMAudit is not a traditional audit firm. It is software you run yourself. There is no engagement letter because there is no third-party firm to engage. You upload your documents, the tool runs the analysis, and you receive your audit report and dispute letter draft directly. This removes the engagement letter step entirely, along with the contingency fee that comes with it.
If you are evaluating whether to hire a contingency firm or use software, see the comparison at Should I Hire a CAM Auditor? and CAM Audit: In-House vs. Outsourced vs. Software.
When You Need an Engagement Letter
You need a CAM audit engagement letter when:
- You are hiring a contingency auditor or CPA firm to conduct the audit on your behalf
- The audit involves formal audit rights invocation and the firm will be dealing directly with your landlord
- The firm will be preparing formal dispute letter drafts or appearing in any dispute resolution proceedings on your behalf
- You have a multi-property portfolio and are engaging a firm under a master services arrangement that covers several audits
You do not need an engagement letter for self-serve software tools or for conducting an internal review of your own reconciliation documents.
The Ten Core Sections
1. Parties and Effective Date
Identifies the tenant, the audit firm, and the date the engagement begins. Seems obvious, but the effective date matters for two reasons: it establishes when your dispute window is running relative to the audit, and it is the reference point for deliverable timelines elsewhere in the letter.
Make sure the "tenant" named is the correct legal entity that is a party to the lease. A mismatch here can create procedural complications if the dispute later goes to mediation or court.
2. Scope of Audit
This section defines which lease years will be audited and which expense categories are in scope. It is the most important section in the letter.
Lease years: Specify the exact calendar years or reconciliation periods. "2022 through 2024" is clear. "Recent years" is not. If your lease has a three-year lookback window, the scope should reflect that exactly.
Expense categories: Some engagement letters exclude certain categories from scope, either because the auditor does not handle them or because you agreed to limit the engagement. Common exclusions include real estate taxes (if you have a separate tax consultant handling those) and insurance.
What is not in scope matters as much as what is. If the engagement letter excludes management fee calculations, you cannot rely on the audit firm to find management fee overcharges even if they are the largest error in your reconciliation.
3. Documents Required
The auditor cannot audit without records. This section lists what the tenant is responsible for delivering and what the auditor will request from the landlord.
Standard tenant-provided documents:
- Original lease with all amendments and side letters
- All CAM reconciliation statements for the audit period
- All CAM estimate notices and monthly payment records
- Any prior correspondence with the landlord about CAM
Landlord-requested documents (the auditor handles the request):
- General ledger for the CAM pool for each audit year
- Management fee invoices and calculations
- Vendor invoices for expenses above a specified threshold (commonly $5,000 or $10,000)
- Occupancy records if a gross-up calculation is at issue
If the landlord fails to provide required records within the lease-specified period, document that failure in writing. It is additional leverage.
4. Fee Structure
Two models dominate the industry: contingency and flat fee.
Contingency fee structure (sample language):
"The audit firm's compensation shall be [X]% of all overcharges identified and recovered through settlement, credit, or payment during the Engagement Period. 'Recovered' means any amount actually credited to tenant's account or received by tenant as a direct payment. The audit firm shall receive no compensation for overcharges identified but not recovered. The minimum engagement fee of $[Y] shall apply regardless of recovery outcome."
Contingency rates in the CAM audit industry typically run 25-33% of the amount recovered. On a $20,000 recovery, that is $5,000-$6,600 to the auditor. The firm takes the risk of finding nothing; you pay more if they find a lot.
Flat fee structure (sample language):
"The audit firm's compensation shall be a fixed fee of $[X], payable as follows: $[Y] upon execution of this letter, and $[Z] upon delivery of the audit findings report. The flat fee is payable regardless of whether overcharges are identified. Tenant shall not be entitled to a refund of the flat fee if no overcharges are found."
Traditional firms charge $2,000-$5,000 for a flat-fee engagement before any contingency. The advantage is you know your cost upfront. The disadvantage is you pay it even if the audit finds nothing.
Hybrid (most common in practice):
A lower flat fee ($500-$1,500) to cover document review, plus a contingency of 15-25% on amounts recovered above a minimum threshold.
5. Timeline and Deliverables
Specify when the audit will be complete and what the deliverables are. A vague timeline is in the auditor's interest, not yours.
Typical language:
"The audit firm shall deliver a written findings report within [60] days of receipt of all required documents from both tenant and landlord. The findings report shall identify each overcharge by category, calculate the dollar amount of each overcharge, and cite the specific lease provision at issue."
Push for a dispute letter draft as a deliverable. Not all firms include this automatically. If the engagement letter does not list it, it may not be included.
6. Confidentiality
The auditor will see your lease, your payment history, and your landlord's internal expense records. The confidentiality section should prohibit the auditor from disclosing these materials to any party other than you and from using them for any purpose other than this audit.
Watch for language that permits the auditor to use anonymized data from your audit in published benchmarks or databases. That is standard in the industry but worth knowing about.
7. Conflict of Interest Disclosure
The auditor should disclose any existing relationships with your landlord, their property management company, or any related parties. An auditor who has worked for the landlord or has an ongoing relationship with the property management company may not be fully independent.
8. What Happens If No Errors Are Found
For contingency arrangements, this section confirms the auditor receives nothing (or just the minimum fee). For flat-fee arrangements, confirm you do not get a refund. Some firms offer a "CAM Verified" finding as a deliverable even when no errors exist, which has value as documentation that you did conduct a review.
9. Landlord Notification Procedure
Defines how and when the auditor will notify the landlord of the audit and the dispute. This matters because some leases require the tenant to provide advance notice before invoking audit rights, and the notification letter starts that clock.
Make sure the auditor is invoking your audit rights properly under your specific lease language, not using a generic notice that could be challenged on procedural grounds.
10. Governing Law
The engagement letter should specify which state's law governs disputes between you and the auditor. For multi-state portfolios, this is the state where the auditor is based or where most of the audited properties are located.
Red Flags in Engagement Letters
High contingency percentage with no cap on fees. A 33% contingency on a $100,000 recovery is $33,000 to the auditor. Caps protect you from paying an outsized fee when a single large error drives the recovery.
Exclusivity clauses. Some engagement letters prohibit you from engaging another auditor or taking your own legal action during the engagement period. If you are locked in for two years and the auditor is slow, you have no options. Push to limit the exclusivity period to no more than 12 months.
"Net recovery" vs. "gross recovery" definitions. If the auditor's contingency is calculated on gross overcharges identified (not just what you actually collected), you could owe fees on amounts the landlord disputes and never pays. Insist on contingency calculated on amounts actually recovered.
No delivery deadline. An auditor with no contractual timeline has no incentive to move quickly. Six months of delay on a 3-year lookback means you may miss your dispute window on the oldest year.
Automatic renewal. Some engagement letters auto-renew annually unless you cancel in writing within a specified window. Set a calendar reminder.
Frequently Asked Questions
Do I need an engagement letter if I'm doing the audit myself?
No. An engagement letter is a contract between you and a third-party audit firm. If you are reviewing your own reconciliation documents or using self-serve software like CAMAudit, there is no third party to contract with. The engagement letter requirement only applies when you hire a professional auditor or CPA to conduct the audit on your behalf.
What is a typical contingency fee for a CAM audit firm?
Traditional contingency auditors charge 25-33% of amounts recovered. On a $15,000 recovery, that means $3,750-$4,950 to the auditor. Some firms charge a minimum engagement fee of $1,000-$2,500 regardless of recovery outcome. CAMAudit charges a flat $79 for a single audit with no contingency, meaning tenants keep 100% of whatever they recover.
What should I do if my landlord refuses to provide records after the auditor requests them?
Document the refusal in writing, including the date of the request and the date the landlord's provision deadline passed under your lease. This failure is a separate breach of the lease that strengthens your position in any subsequent dispute or litigation. Your attorney can advise on whether the refusal constitutes a waiver of the landlord's right to dispute your calculated overcharge.
Can I negotiate the engagement letter terms with the audit firm?
Yes, though small firms are less flexible than large ones. The most negotiable terms are: the contingency percentage, the cap on fees, the exclusivity period, and the delivery timeline. The least negotiable terms are typically the governing law and the definition of what counts as a recoverable overcharge.
What if the engagement letter covers years that are outside my dispute window?
The audit firm should not be auditing years you can no longer dispute. Review your lease's dispute window before agreeing to scope. If your lease has a 2-year lookback from the date of reconciliation delivery, and reconciliation statements from 3 years ago were delivered more than 2 years back, those years may be procedurally closed. Auditing them creates work with no recovery potential and runs up fees.