Single-tenant CAM means you pay everything but the math is simple. Multi-tenant CAM shares costs but introduces allocation errors that require auditing.
In a single-tenant property, one tenant occupies the entire building and is typically responsible for all operating expenses directly. There is no shared allocation because there are no other tenants. The tenant may handle maintenance directly or reimburse the landlord for actual costs.
In a multi-tenant property, operating expenses are divided among all tenants based on their pro-rata share. The landlord manages maintenance, collects estimated payments from each tenant, and reconciles actual costs annually. Each tenant pays only their proportionate share of total expenses.
| Dimension | Single-Tenant CAM | Multi-Tenant CAM |
|---|---|---|
| Cost responsibility | 100% of all expenses | Proportionate share based on SF |
| Allocation method | No allocation needed | Pro-rata share or per-unit |
| CAM audit complexity | Low, verify total costs only | High, verify allocation and individual line items |
| Maintenance control | Direct control over vendors and quality | Landlord controls, tenant has limited input |
| Vacancy impact | Not applicable | Remaining tenants may absorb vacant space costs |
Multi-tenant CAM creates far more audit opportunities because the allocation methodology introduces additional calculation layers where errors can occur. Pro-rata share errors, gross-up mistakes, cap miscalculations, and excluded charge violations are all unique to multi-tenant properties. Single-tenant properties have simpler expense verification but higher total cost exposure.
Multi-tenant CAM exposes tenants to more types of overcharges because every allocation layer is a potential error point. However, single-tenant CAM exposes you to higher total costs because there is no cost-sharing. The worst outcome depends on whether you value cost predictability (single-tenant risk) or accuracy (multi-tenant risk).
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Find My OverchargesThis page provides general educational information. It is not legal advice and may not reflect the most current law in your state. Consult a licensed attorney for advice specific to your situation.
