Bookkeeping firms: adding CAM audit as an advisory add-on service
Does your firm serve commercial tenant clients? Then you already code CAM bills each month. CAM is the shared cost a tenant pays each year. You see the yearly statement. You process the true-up payment. The true-up settles the gap between what was paid and what was owed. What you likely do not do is check if the amounts are right. Add that check as a service or a handoff. It gives your firm a clear new offer for these clients.
NNN (triple-net) lease: A commercial lease structure in which the tenant pays base rent plus three categories of additional expenses: property taxes, property insurance, and common area maintenance (CAM) costs. In a NNN lease, the landlord passes through most or all building operating expenses to tenants in proportion to their leased square footage. Annual CAM reconciliation statements document actual expenses versus estimated payments and generate a true-up charge or credit.
Your firm has a hidden edge
You work in QuickBooks Online and Xero. You may see the bill in AP. The CAM statement arrives. The manager bills the true-up. You code and pay it.
That is a good time to start a review. Check the lease before payment. Read its audit-right steps. Check what payment may change. Ask counsel when needed.
The bookkeeper does not need to spot these errors by hand. That is what CAMAudit does. Your job is to know which clients have CAM bills. Then make the intro at the right time.
Why CAM audit fits your firm
Your firm bills for bookkeeping. CAM review can be a separate service. Offer it when the client needs it.
CAM audit fits advisory work. It answers a question the client already cares about. Did the landlord bill CAM right under the lease? The client pays because the amount in play is real. They do not pay because a rule says they must.
There is one partner path for this work: white-label delivery.
You use the CAMAudit partner workflow. You deliver findings under your own brand. The client fee can be a flat project fee or a yearly add-on to the retainer. Your margin depends on that fee, the CAMAudit audit-pack cost, staff review time, and client call time.
For a firm with commercial tenant clients, white-label delivery adds revenue on top of your current fees. It also asks for real ownership. You review the findings. You explain the report. You manage the scope.
"I built CAMAudit to help partners compare the lease with the reconciliation before they advise a client." - Angel Campa, Founder of CAMAudit
How to spot the right clients in your book
The checklist is short.
Does the client have a commercial NNN or modified gross lease? A NNN lease is a triple-net lease. The tenant pays base rent plus taxes, insurance, and CAM. You can see this in the chart of accounts. Is there a CAM expense account apart from base rent? Then the client pays pass-through charges. Does the monthly work include a CAM bill from the property manager? Then the client has one of these leases.
Does the client get a reconciliation statement? It sets the true-up. Check it against monthly CAM bills. Then check the lease.
What is the yearly CAM cost? Use QuickBooks or Xero. Add CAM pay for each site. Use the lease and bill to see if review fits.
How many sites does the client have? Keep each lease and bill with its own site. The partner can sort the full list. One result does not prove another.
The Q1 workflow: make CAM audit routine
The trigger is the yearly statement. The landlord sends the CAM statement and the true-up bill. Now your firm has a choice point. Code and pay, or review first.
Build a Q1 workflow around that trigger. Then CAM audit becomes routine, not a one-off handoff.
Step 1 is to flag the statements. In QuickBooks Online or Xero, flag CAM statements when they hit the AP queue. Do not process them right away. Hold them for review.
Step 2 is to start the client talk. Reach the client. "Your CAM statement arrived. Before we process the true-up, I want to flag it for review. CAM billing errors are documented across the industry. A document review through CAMAudit can check whether the charges match your lease." The talk is short. The client wants the check or they do not.
Step 3 is to share the link or open the white-label engagement. If the client says yes, send the partner workspace or open the white-label workflow. The client uploads the statement and the lease sections. Under white-label, your firm uploads them.
Step 4 is to get findings and advise. CAMAudit returns findings. Your firm reviews them with the client. The report names the lease terms, the dollar amounts, and the support for each finding. Under white-label, the report carries your firm's brand.
Step 5 is to process the true-up. If there are findings, the client and counsel pick the payment and next steps. If there are none, process the payment. Note that you reviewed the statement against the lease.
This workflow adds one talk and one upload to your Q1 close. For any client with real CAM bills, that step is worth it.
Client conversation starters
Clients do not think about CAM audit on their own. The talk has to come from you. Two openers work well.
When the statement arrives: "Your CAM statement came in at [amount]. It is [X%] higher than last year. Before we approve the true-up, it is worth a quick check against your lease. Want me to have this reviewed?"
When you review the yearly P&L: "Your occupancy cost is one of your bigger fixed expenses. You pay [amount] a year in CAM charges across your sites. We have never checked if those amounts match your lease. It is a one-time review. It could recover real money. Want me to start it?"
Neither opener needs a sales pitch. Both fit the money talk you already have with the client.
FASB ASC 842 opened another door. Some clients finished lease accounting work in recent years. Now their lease assets and lease debts show on the balance sheet. Board members and lenders watch those numbers. You can show that the occupancy cost is checked, not just recorded. That adds a layer of trust your firm can sell as value.
What CAMAudit checks
Management fee overcharge is the first. Many leases cap the management fee. The cap is a percent of operating costs, minus capital costs. Does the landlord figure the fee on a base that adds capital work? Then the fee is too high. CAMAudit checks the fee against the lease base and cap.
Pro rata share error is the second. The tenant's share is a fraction. It is the tenant's space divided by the building's space. The lease sets which total to use. Does the landlord use a different total than the lease names? Then the share is wrong. This error stacks each year. It hurts most in buildings where the tenant mix shifts.
Gross-up is the third check. Some leases require it when the building is not full. The lease states the method. If the landlord skips it, review the bill.
Excluded service charges are the fourth check. The lease may list costs the tenant need not pay. Check that list against the bill. CAMAudit flags matches.
See CAM reconciliation audit procedures for CPAs and accounting advisors for the full method.
Sources
- AICPA. "Advisory services: expanding the accounting professional's role." https://www.aicpa.org/
- FASB. "ASC 842: Leases." Financial Accounting Standards Board. https://www.fasb.org/
- IREM (Institute of Real Estate Management). "Income/expense analysis reports." https://www.irem.org/
- BOMA International. "Operating expense benchmarks for commercial buildings." https://www.boma.org/
- IRS. "Publication 535: Business expenses." https://www.irs.gov/publications/p535
Disclaimer: This article provides general educational information about CAM reconciliation review and the CAMAudit service for bookkeeping practices. It is not legal, tax, or accounting advice. Revenue examples are illustrative; actual results depend on client volume, pricing, staff time, and purchasing behavior. Dispute rights and audit periods vary by lease and jurisdiction. Consult qualified commercial real estate counsel before initiating any formal dispute with a commercial landlord.
Add CAM audit to your firm. See the white-label CAM audit service details at /partners/white-label.
Frequently Asked Questions
How does a bookkeeping firm add CAM audit to its service offering?
The lowest-friction path is a white-label pilot: get started, choose the client scope, and run the first commercial tenant files when annual reconciliation statements arrive. CAMAudit runs behind the scenes. The bookkeeping firm reviews the findings and delivers under its own brand.
Which bookkeeping clients should I prioritize for a CAM audit conversation?
Look for CAM pass-throughs. Look for a reconciliation bill. Use the lease and bill to see if review fits.
Do I need to understand commercial leases to offer this service?
Not in detail. The white-label model requires only that you identify which clients have commercial NNN leases and introduce CAMAudit at the right moment. The forensic analysis is handled by the platform. For the white-label model, you would review findings with the client, which requires understanding the specific lease provisions cited in the report, but not deep commercial real estate expertise.
When do CAM reconciliation statements typically arrive?
Review the bill when it reaches AP. Check the lease for the review time. Then discuss a check before the true-up goes out.
What is the partner delivery structure?
Partners earn service revenue from client work they sell and deliver under their own brand. The right structure depends on the audit pack, client scope, staff review time, and the fee the firm charges.
Can bookkeeping firms use QuickBooks or Xero class tracking to identify CAM audit candidates?
Yes. Use one CAM class or category apart from base rent. It helps you find CAM charges and track them. Use the lease and bill to decide if a review fits.