Common Area Misclassification: When Tenant-Specific Work Gets Charged to Everyone
A common area expense is a cost associated with maintaining, operating, or improving areas that serve all tenants in the property: lobbies, parking lots, hallways, loading docks, landscaped areas. Work that benefits only one tenant, renovation inside their suite, HVAC serving only their space, above-standard services provided exclusively for their benefit, is not a common area expense regardless of what the property manager's accounting system calls it.
When tenant-specific costs get misclassified as common area expenses and included in the CAM pool, every tenant in the building pays a portion of a cost they received no benefit from. The amount is usually not labeled "work inside Suite 320." It appears as a generic description that looks like legitimate maintenance, which is why the error requires active review rather than casual inspection.
40% of commercial CAM reconciliations contain material billing errors, including misclassified common area expenses (Tango Analytics, 2023)
Common area misclassification means tenant-specific work appears in the shared expense pool. Every other tenant pays a pro-rata share of work they never benefited from. The fix requires requesting the general ledger with descriptions, not just totals.
What counts as a common area
BOMA International's definition of common areas for retail properties is grounded in the ANSI/BOMA Z65.5-2012 standard: common areas are not factored into a tenant's gross leasable area because they are maintained separately and the costs are apportioned among tenants. The concept is space that is shared, corridors, parking, lobbies, restrooms, loading areas, where every tenant has reasonable access and derives benefit.
Tenant-specific space, the leased premises, is explicitly outside this definition. Work performed inside the leased premises, even if the landlord arranges and pays for it, is not a common area cost.
The line gets complicated at the boundary. The landlord's entrance lobby that also serves as a corridor to multiple suites is common area. The entrance lobby renovation done primarily to attract or accommodate one anchor tenant is a tenant-specific benefit dressed as a common area improvement. Courts apply a factual analysis to the actual work and its intended beneficiaries.
How misclassification happens
Vacant suite preparation
When a landlord prepares a vacant suite for a new tenant, painting, flooring, partition work, HVAC adjustments, those costs are tenant improvements. They benefit the incoming tenant and, indirectly, the landlord through higher occupancy and rent. They are not common area costs.
Property management accounting systems sometimes code these as "maintenance" or "common area preparation" at the time of the work because the space is temporarily vacant (and therefore, arguably, not belonging to any tenant). The categorization is wrong. The work is done for the benefit of a specific future tenant, not the common area. ICSC model retail lease forms explicitly exclude from the CAM pool the cost of tenant improvements and the "cost or rental value of vacant space."
Anchor tenant benefits
Renovation work in or adjacent to an anchor tenant's space that primarily benefits the anchor, expanded entrance, dedicated parking, signage improvements, may be classified as common area work because it affects shared areas of the property. But if the work was undertaken to satisfy the anchor's requirements or retain the anchor's tenancy, the benefit is concentrated and the cost arguably belongs to ownership rather than the CAM pool.
Directly metered services billed to the pool
When a service that should be billed directly to a specific tenant, dedicated HVAC, specialized cleaning, exclusive signage maintenance, is instead included in the common area pool, every tenant subsidizes one tenant's benefit. This overlaps with the utility double-billing problem but extends to non-utility services as well.
A restaurant tenant whose kitchen HVAC system is maintained under the building's master HVAC contract, and where that cost flows into the common area pool, is seeing their operational costs subsidized by neighboring tenants who share no benefit from the restaurant's kitchen exhaust.
30% of CAM disputes involve expenses that should have been billed directly to a specific tenant rather than allocated across the pool (BOMA International Study, 2023)
Sheplers v. Kabuto: a frequently cited precedent
In Sheplers, Inc. v. Kabuto International (Nevada) Corp., 63 F. Supp. 2d 1306 (D. Kan. 1999), the court applied shopping-center lease language that excluded from "Common Area Costs" items associated with leasing activity and tenant-specific costs. The decision is widely referenced in practitioner discussions because it enforced express exclusions against a landlord who characterized the disputed costs as common area in nature, demonstrating that courts look at the actual function of the work, not the label applied to it.
The case is useful not just for its outcome but for the framework it represents: explicit exclusion language in a lease can protect tenants from costs that the landlord characterizes as common area but that a reasonable reading identifies as tenant-specific.
The above-standard services issue
Above-standard services are services provided to a specific tenant at a higher level than what is provided to tenants generally. Examples:
- A law firm tenant receives daily cleaning of their conference rooms and reception area in addition to the standard building cleaning schedule
- An anchor department store has a dedicated loading dock attendant whose hours exceed what the building's standard security staffing would provide
- A medical office tenant has access to a specific parking allocation maintained with more frequent paving repairs than the general lot
When costs for above-standard services are billed as common area maintenance rather than as direct charges to the benefiting tenant, all tenants share a cost that should fall on one.
BOMA's published exclusion language includes "special services and utilities separately chargeable to individual tenants" as a standard exclusion from the common area pool. The concept is a recognized baseline in balanced lease drafting.
Worked dollar example
The year's CAM pool includes the following items:
- "Interior renovation, lobby area, Building A": $45,000 (later investigation shows this was a tenant improvement for an incoming anchor, not renovation of the lobby accessible to all tenants)
- "HVAC rooftop unit maintenance, restaurant exhaust": $12,000 (the restaurant is separately metered and has dedicated HVAC; this maintenance is specific to their system)
- "Enhanced janitorial, executive floor": $8,000 (above-standard cleaning for a premium tenant who negotiated this level of service)
Total tenant-specific costs in pool: $65,000
Your pro-rata share is 5%.
Your share of misclassified costs: $65,000 times 5% equals $3,250 for the year.
If these costs appeared consistently over the term, the cumulative overcharge would be proportional to the duration and the pool amounts.
How to identify misclassified expenses
Pull the general ledger with expense descriptions, not just line totals. The general ledger should show enough detail to classify each cost.
Flag any line item describing work in a specific location (suite number, floor, wing) or work explicitly linked to a specific tenant.
Flag any service that sounds above-standard: "enhanced," "dedicated," "premium," or "exclusive" in the description.
Request invoices and work orders for large flagged items. A project summary for $45,000 in "lobby renovation" should describe the scope; if the scope is clearly a tenant improvement, the amount does not belong in the pool.
Review the building's lease execution records for the reconciliation year. If a new lease was signed during the year, flag any renovation work that occurred around that time and investigate whether it was tenant improvement work.
What documentation to request
- The CAM general ledger with detailed expense descriptions
- Invoices and work orders for any item over $5,000 that has a vague description or appears to be in a specific area
- Floor plans or project descriptions for renovation work
- A list of new leases executed during the reconciliation year, with the lease commencement date
- Above-standard service agreements or side letters for specific tenants
For the full detection framework across all 14 CAM overcharge categories, see commercial lease CAM overcharge. For excluded expense categories specifically, see excluded service charges.
CAMAudit's classification engine analyzes each expense line item in your CAM reconciliation to identify costs that appear to be tenant-specific or above-standard rather than common area in nature. Items flagged for review include large renovation charges, service descriptions that mention specific locations, and costs that do not match common area maintenance patterns.
See also: Landlord overcharging CAM signs, 7 patterns that point to a billing error.
Related: Excluded service charges | Gross lease CAM charges
Frequently Asked Questions
What counts as a common area expense versus a tenant-specific expense?
A common area expense maintains, operates, or improves areas that serve all tenants: lobbies, parking lots, hallways, loading docks, landscaped areas. Work that benefits only one tenant, renovation inside their suite, HVAC serving only their space, dedicated cleaning at above-standard levels for one occupant, is not a common area expense regardless of how the property management accounting system labels it. The purpose and primary beneficiary of the work determine the classification, not the invoice description.
How do tenant improvement costs end up in the CAM pool?
Vacant suite preparation is the most common mechanism. When a landlord prepares a vacant suite for a new tenant, painting, flooring, partition work, HVAC adjustments, those costs are tenant improvements. Property management accounting systems sometimes code them as 'maintenance' or 'common area preparation' because the space is temporarily vacant. ICSC model retail lease forms explicitly exclude from the CAM pool the cost of tenant improvements and 'the cost or rental value of vacant space.'
How do I tell if a lobby renovation was for all tenants or just one?
Request the project scope. A renovation that repainted walls, replaced carpet, and updated lighting in the main lobby is common area work. A renovation that reconfigured the lobby layout to improve access to a specific anchor tenant's entrance, added branding elements for that tenant, or addressed structural requirements the anchor demanded in its lease is tenant-specific. Courts apply a factual analysis to the actual work and its intended beneficiaries. The landlord's characterization in the reconciliation is not controlling.
What are above-standard services and why are they a CAM overcharge?
Above-standard services are provided to a specific tenant at a higher level than what all tenants receive. Examples include: a law firm getting daily conference room cleaning beyond the standard schedule, an anchor with a dedicated loading dock attendant beyond normal security staffing, or a medical tenant with more frequent parking lot maintenance than the general lot receives. When these costs are billed as common area maintenance rather than direct charges to the benefiting tenant, all other tenants subsidize a cost they receive no benefit from. BOMA's published exclusion language explicitly excludes 'special services and utilities separately chargeable to individual tenants.'
What documentation should I request to identify misclassified common area expenses?
Request the CAM general ledger with detailed expense descriptions (not just totals), invoices and work orders for any item over $5,000 with vague descriptions or specific location references, floor plans or project descriptions for renovation work, a list of new leases executed during the reconciliation year, and above-standard service agreements or side letters for specific tenants. The trigger for investigation is any line item describing work in a specific location, for a specific tenant, or using terms like 'enhanced,' 'dedicated,' or 'exclusive.'
Can I recover overcharges from common area misclassification in prior years?
Yes, within your lease's audit lookback window and the applicable state statute of limitations for written contracts (typically 3 to 6 years). Misclassification errors from software or process failures tend to repeat across years, so a finding in the current year almost always exists in prior years as well. Calculate the total excluded amount per year, multiply by your pro-rata share, and aggregate across all recoverable years.