CAM Reconciliation Services — Year-End True-Ups Your Tenants Cannot Dispute
Last Updated: October 7, 2026A common area maintenance reconciliation is the one calculation in commercial property accounting that every tenant reads line by line. Get the pool, the exclusions or the pro-rata share wrong and you are not just reissuing a statement — you are facing an audit request, a withheld payment, and in the worst case a claim that you over-billed across the whole rent roll. Maxim Liberty prepares CAM reconciliations that hold up when a national tenant’s lease administrator asks you to prove every number.
What a CAM Reconciliation Actually Involves
Most property managers can produce a general ledger. The reconciliation is the harder step: translating a year of operating expense into a defensible per-tenant charge that matches what each individual lease permits you to recover.
That means reading the leases, not just the ledger. Two tenants in the same building routinely owe different amounts for the same shared expense because one signed a cap on controllable costs and the other did not, or because one excluded roof work and the other excluded nothing.
The Six Steps We Work Through
1. Build the Expense Pool
We start from the trial balance and assemble the recoverable pool for the period — landscaping, snow removal, parking lot maintenance, security, common area utilities, management fees where the lease allows them. Everything that is not recoverable comes out here rather than being netted quietly later.
2. Apply Lease Exclusions
Capital improvements, leasing commissions, tenant improvement allowances, legal fees on disputes with other tenants, and costs reimbursed by insurance are the usual exclusions. We track exclusions per lease, because they differ per lease.
3. Separate Capital From Repair
Replacing a roof is capital; patching one is a repair. Where a lease permits amortisation of a capital item, we calculate the annual amortised portion at the rate and useful life the lease specifies, rather than expensing it in the year it was paid.
4. Gross Up for Vacancy
Where the lease contains a gross-up provision — usually 95 percent — variable occupancy-driven expenses are restated as if the building were that full. This protects tenants from absorbing the landlord’s vacancy and is one of the most commonly missed steps in an in-house reconciliation.
5. Calculate Each Pro-Rata Share
Rentable square feet over the denominator the lease names, prorated for any partial year of occupancy. The denominator matters: total building area, total occupied area and total leasable area are three different numbers and the lease picks one.
6. Apply Caps, Then True Up
Caps come last — cumulative or non-cumulative, compounding or not, on controllable costs only or on the full pool, exactly as written. We then compare the final recoverable amount against what each tenant actually paid in monthly estimates and produce the billing or the credit.
Where CAM Reconciliations Go Wrong
The errors we are asked to clean up are consistent across portfolios:
- The administrative fee is charged on the wrong base. A 15 percent admin fee on the gross pool is a different number than 15 percent on the pool net of utilities and management fees. The lease says which.
- Capital work is expensed in full. The single fastest way to trigger a tenant audit.
- The gross-up is skipped. Usually because the in-house process never had a step for it.
- Square footage is stale. Suites get combined, demised or remeasured and the denominator never gets updated.
- Estimates were never trued up at all. We are regularly brought in on portfolios two or three years behind.
What You Receive
Every engagement produces the same deliverable set, because the statement alone is not what survives a challenge — the support behind it is.
- A reconciliation workbook per property, showing the pool, every exclusion, the gross-up and the cap calculation
- A per-tenant statement with the pro-rata share, amount billed, amount paid and the resulting charge or credit
- A tie-out from the reconciliation back to the general ledger, so the numbers trace to source
- Updated monthly estimates for the coming year
- The supporting schedules a tenant’s lease administrator will ask for, assembled before they ask
CAM Deadlines Are Set by the Lease, Not the Calendar
Most commercial leases require reconciliation statements within 90 to 120 days of year end, and some contain a deadline after which the landlord waives the right to recover the shortfall. We work backwards from your specific lease deadlines rather than a generic calendar.
For portfolios that are behind, we reconcile the oldest open year first — recovery rights expire, and the oldest year is the one closest to expiring.
What a CAM Reconciliation Costs
CAM reconciliation is billed from the same monthly retainer as the rest of your bookkeeping. Our entry plan is $75 per month and includes 5 hours, with additional hours at $15 each. There are no per-unit or per-door fees, no long-term contract, and a 100% money-back guarantee on your 1st retainer, refundable on the unused balance. See full pricing or use the estimator there to model your portfolio.
A single-property annual reconciliation with a clean ledger and straightforward leases is typically a few hours. Multi-tenant retail with caps, gross-ups and amortisation schedules takes longer, and a backlog of unreconciled years takes longer still — we scope it before you commit.
Frequently Asked Questions
What is a CAM reconciliation?
It is the year-end calculation that compares what a commercial tenant actually owes for common area maintenance against the monthly estimates they paid during the year. The difference is billed to the tenant or credited back. It is required by most commercial leases and is usually due within 90 to 120 days of year end.
How is each tenant’s pro-rata share calculated?
The tenant’s rentable square footage is divided by a denominator the lease specifies — total building area, total leasable area or total occupied area. Those three produce different results, so the lease language controls. The share is then prorated for any partial year of occupancy.
What is a gross-up provision and why does it matter?
A gross-up restates variable, occupancy-driven expenses as if the building were at a stated occupancy, commonly 95 percent. Without it, tenants in a partly vacant building absorb a larger share of costs the landlord would otherwise carry. Skipping a gross-up the lease requires is a frequent source of tenant audit findings.
Can capital improvements be included in CAM?
Generally not as a full-year expense. Many leases permit a capital item to be amortised over its useful life with only the annual portion recoverable, and many exclude capital entirely. Expensing a roof replacement in the year it was paid is one of the most common reasons a reconciliation gets challenged.
What is the difference between a cap and a gross-up?
A cap limits how much recoverable expense can increase year over year, often applied only to controllable costs. A gross-up adjusts for vacancy. They are separate provisions, they are applied at different points in the calculation, and a lease may contain either, both or neither.
We are two years behind on reconciliations. Can you catch us up?
Yes. We reconcile the oldest open year first, because many leases contain a deadline after which the landlord waives the right to recover a shortfall. Backlog work comes out of the same retainer, with additional hours at $15 each; see our catch-up bookkeeping service.
Do you read the leases or do we summarise them for you?
We work from the leases and any existing abstracts. If you already maintain a lease abstract database, we reconcile against it and flag anything that conflicts with the underlying document. If you do not, we build the abstract of the CAM provisions as part of the first engagement.
What happens if a tenant disputes the reconciliation?
You send them the workbook. Every statement we produce traces back through the gross-up, the exclusions and the cap to the general ledger, so the response to an audit request is the file we already prepared rather than a scramble to reconstruct the year.
Get Your Reconciliations Done Before the Lease Deadline
Whether you are reconciling one shopping centre or catching up a portfolio that is years behind, we will scope the work before you commit to anything.