Mixed-Use Horizontal CAM Reconciliation Guide for Landlords
Typical CAM pools, billing errors, gross-up mechanics, and BOMA standards for mixed-use horizontal properties.
Benchmark CAM per SF
$3.00 – $10.00 / SF
Source: BOMA EER / ULI 2024
Gross-Up Applicability
Moderately relevant — horizontal mixed-use typically has building-level and campus-level CAM. Gross-up applies to campus-level shared costs when individual buildings or phases are not yet occupied.
Typical CAM Pools
- Parking (shared surface/structured)
- Landscaping
- Security
- Common area lighting
- Stormwater management
- Wayfinding/signage
- Insurance
- Property taxes
- Management fees
Standard Exclusions
- Building-specific costs
- Capital improvements
- Leasing commissions
- Residential HOA costs
- Individual building maintenance
Common Lease Structures
Common Billing Errors
- Double-charging tenants for building-level and campus-level versions of the same expense
- Allocating phase-2 infrastructure costs to phase-1 tenants
- Incorrect pro-rata shares when campus square footage changes as new buildings deliver
Relevant BOMA Standards
- ANSI/BOMA Z65.1-2024 (Office Buildings)
- ANSI/BOMA Z65.5 (Retail Buildings)
- Campus allocation methods
Mixed-Use Horizontal CAM Context
Horizontal mixed-use developments (separate buildings for office, retail, residential around shared amenities) require two tiers of CAM: building-level operating expenses and campus-level shared costs. Phased development adds complexity as the denominator for pro-rata calculations changes.
Related Resources
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