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Suburban Office CAM Reconciliation Guide for Landlords

Typical CAM pools, billing errors, gross-up mechanics, and BOMA standards for suburban office properties.

Benchmark CAM per SF

$5.50 – $11.00 / SF

Source: BOMA EER / IREM 2024

Gross-Up Applicability

Relevant — suburban office parks often experience occupancy swings as anchor tenants relocate. Parking lot and landscaping costs are significant shared costs that should be evaluated for gross-up treatment.

Typical CAM Pools

  • Janitorial
  • Landscaping
  • Parking lot maintenance
  • Utilities (common area)
  • HVAC maintenance
  • Security
  • Management fees
  • Insurance
  • Property taxes
  • Snow/ice removal

Standard Exclusions

  • Tenant improvements
  • Leasing commissions
  • Capital replacements
  • Above-standard cleaning

Common Lease Structures

Modified gross with base yearNNNFull-service gross with expense stops

Common Billing Errors

  • Allocating parking lot costs to tenants without parking rights
  • Including costs for vacant building in a multi-building campus
  • Improperly charging single-tenant building expenses to multi-tenant pool

Relevant BOMA Standards

  • ANSI/BOMA Z65.1-2024 (Office Buildings)
  • Campus allocation methods for multi-building complexes

Suburban Office CAM Context

Suburban office CAM is complicated by campus-style properties where shared costs must be allocated across multiple buildings, each with potentially different occupancy levels.

Industry Benchmarks

Avg Occupancy (2025)
85.8%
Public REIT average
Median OpEx/SF
$17.68
Annual operating expenses
Typical Recovery Ratio
85-95%
Full-service gross leases recover less; modified gross and N...

Source: Public REIT 10-K filings (FY 2025), BOMA EER (2025 edition). Data compiled March 2026.

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Related Resources

Expenses/Administrative OverheadBoma/Boma 2024 Adoption RoadmapCam Reconciliation ErrorsCam Gross Up CalculatorPro Rata Calculator

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