CAM stands for common area maintenance: the shared costs of running a multi-tenant property, such as snow removal, parking lot repairs, landscaping and common utilities. Under most net leases, tenants pay their share of those costs, often along with property taxes and insurance.
Once a year, the landlord compares what tenants paid in monthly estimates with what the costs actually were, and bills or credits the difference. That annual true-up is the CAM reconciliation. The statement is usually short. The lease language that governs it is not.
How a reconciliation works
Through the year, each tenant pays a monthly estimate, set by the landlord from a budget. After the year closes, the landlord totals the actual costs, applies each tenant’s share and compares that figure with the estimates paid.
If the share is higher than the estimates, the tenant owes the balance. If it is lower, the tenant gets a credit or a refund. Then the estimates for the new year are reset.
Every step in that sentence depends on the lease: which costs count, how the share is calculated, what fees are added and what limits apply.
Start with the lease clause
Before reading the statement, pull these terms from the lease and every amendment:
- The definition of operating expenses or common area costs
- The list of excluded costs
- How the tenant’s share is calculated, including the denominator
- Any cap on yearly increases, and which costs it covers
- The administrative or management fee, and what it applies to
- Whether and how costs may be grossed up for vacancy
- The deadline to review or dispute the statement, and any audit rights
A lease abstract puts each of those on one page with the section it came from. Without one, expect to read the CAM clause, the definitions section and each amendment side by side.
The eight lines to check
1. Pro rata share
The tenant’s share is a fraction: its square feet over a denominator the lease defines. Check both numbers. If the lease says the denominator is the center’s total leasable area, it should not shrink when a suite goes dark. A smaller denominator raises every tenant’s share.
2. Excluded costs
Leases usually exclude some costs from CAM. Typical examples include the landlord’s own financing, leasing commissions, legal fees for disputes with other tenants and costs covered by insurance. Read the actual list in your lease, then look for those items in the detail.
3. Capital costs
A roof patch is a repair. A new roof is a capital improvement. Leases treat them differently: some exclude capital work, some allow it only when spread over its useful life, some allow it in full. A one-year spike in a single line is the place to look.
4. Gross-up
When a building is partly empty, some leases let the landlord gross up variable costs, such as janitorial or common utilities, to what they would be at a stated occupancy. Done correctly, it applies only to costs that vary with occupancy and only as the lease allows.
The math: if janitorial costs were $20,000 at 70% occupancy and the lease allows a gross-up to 95%, the grossed-up figure is $20,000 ÷ 0.70 × 0.95, or about $27,143. Taxes and insurance do not change with occupancy and should not be grossed up.
5. Caps on increases
A cap limits how much certain costs can rise each year, often only controllable costs. Check whether the cap is cumulative, meaning unused room carries forward, or applies year by year, and which lines count as controllable.
6. Administrative fee
Many leases let the landlord add a fee for managing the common areas, stated as a percentage. Check the rate and the base. If the lease applies the fee to CAM only, it should not be charged on taxes and insurance as well.
7. Taxes and insurance
The tax line should match the county’s bill for the right year. In Wyoming, commercial property is assessed at 9.5% of market value and industrial property at 11.5%, per Teton County’s property tax guide. The tax is that assessed value times the mill levy on the notice.
Say the county’s market value for a center is $4,060,000 and the levy is 70 mills, both illustrative:
$4,060,000 × 9.5% = $385,700 assessed value
$385,700 × 0.070 = $26,999 in tax
If the statement shows a materially different figure, ask for the bill. The Wyoming property tax estimator runs the same check from your notice.
8. Estimates paid and credits
The last line is the one most easily skipped. Check that every monthly estimate you paid is credited, that last year’s adjustment was applied once, and that any refund owed was actually paid.
A worked example
The numbers here are illustrative. Say a tenant leases 2,400 square feet in an 18,000 square foot strip center in Sheridan. The tenant paid $12,000 in estimates for the year. The landlord’s statement:
| Line | Statement |
|---|---|
| Common area costs, including an $18,000 parking lot replacement | $54,000 |
| Property taxes | $27,000 |
| Insurance | $15,000 |
| Admin fee, 10% of $96,000 | $9,600 |
| Total | $105,600 |
| Tenant share, 2,400 ÷ 16,000 = 15% | $15,840 |
| Less estimates paid | $12,000 |
| Balance due | $3,840 |
Now read it against a hypothetical lease that says three things. The share uses the center’s full 18,000 square feet. The admin fee applies to common area costs only. Capital items are allowed only when spread over their useful life, here ten years.
| Line | Per the lease |
|---|---|
| Common area costs: $54,000 less $18,000, plus $1,800 for one year of the lot | $37,800 |
| Property taxes | $27,000 |
| Insurance | $15,000 |
| Admin fee, 10% of $37,800 | $3,780 |
| Total | $83,580 |
| Tenant share, 2,400 ÷ 18,000 = 13.33% | $11,144 |
| Less estimates paid | $12,000 |
| Credit due to tenant | $856 |
Three lines, read against the clause, turn a $3,840 bill into an $856 credit. That is a swing of about $4,700 for one tenant in one year, and every other tenant in the center has the same three questions.
Compare it with last year
The eight lines test the statement against the lease. A second test compares it with itself: this year’s actual costs, line by line, against last year’s actual costs and this year’s budget.
Say snow removal was $8,400 last year and $14,700 this year, a 75% rise. In Sheridan, a hard winter can explain that on its own. It is still worth asking for the invoices, because a line that jumps is also where a one-time cost, a capital item or another property’s bill can land by mistake.
A simple rule works: any line that moved more than about 10% from last year gets a one-sentence explanation from the landlord. Often there is a plain answer. A line without one is the one to check against the lease.
Keep a file for next year
Once the statement is settled, keep it with the lease extracts, the backup you received and any letters exchanged. Next year’s review starts from that file.
Check two things when the new estimates arrive. Corrections agreed this year should carry forward, so the same error does not appear twice. And the new monthly estimates should reflect actual costs, not last year’s billed figure, or the next reconciliation starts out wrong.
Dates that decide everything
Leases usually set a deadline for the landlord to deliver the statement and a window for the tenant to question it. Some also give the tenant the right to inspect the landlord’s records. Those windows can be short, so note them the day the statement arrives.
Read the deadline in your own lease. If you think a charge is wrong and the window is closing, a short written notice that you are reviewing the statement is often the first step. What that notice should say, and what happens if the landlord disagrees, is a question for your attorney.
What to request from the landlord
- The general ledger detail behind each line
- Invoices for any large or unusual item
- The property tax bill and the insurance declarations page
- Monthly occupancy, if costs were grossed up
- The square footage used for the denominator, and how it was measured
- Last year’s reconciliation, to compare line by line
For landlords, before it goes out
The same eight lines work from the other side. A landlord who checks them before sending avoids rebilling, keeps disputes small and sets next year’s estimates on firmer ground. Every lease in the property may say something slightly different, so reconcile each tenant against its own lease, not a template.
The next step
A CAM reconciliation review reads one property year of costs against the lease language and ends in a findings letter the tenant or landlord can send. It takes 10 business days, from $1,500 per property year (indicative). It is part of our lease analysis service, and our glossary of lease terms defines CAM, gross-up, expense stop and the rest. Book a free 30-minute scoping call with the statement and the lease in hand.
