Common area maintenance charges are the mechanism most commercial leases use to pass building operating costs through to tenants. Cleaning sits inside CAM alongside landscaping, snow removal, parking lot lighting, and property management fees. Getting the cleaning allocation right matters for two reasons: under-budgeting produces a year-end true-up that surprises tenants, and over-budgeting produces a credit that leaves money on the table and creates tenant friction when they believe they overpaid.
What Goes Into a Cleaning CAM Allocation
The cleaning portion of CAM for a multi-tenant building typically covers three cost categories. The first is the base cleaning program — scheduled nightly or weekly service of common areas, lobbies, corridors, elevator cabs, and restrooms. The second is supply costs if the building owner furnishes soap, paper products, and trash liners. The third is periodic services that occur outside the base schedule: floor stripping and refinishing, carpet extraction, and post-construction or post-renovation cleaning for tenant improvements.
Day porter services, where applicable, are sometimes included in CAM and sometimes billed separately as a building amenity surcharge, depending on how the lease is drafted and whether all tenants benefit equally from the porter's presence.
Allocating by Square Footage vs. Pro Rata
Most Minnesota commercial leases use a pro-rata share allocation: each tenant pays a percentage of CAM equal to their share of the total leasable building area. A tenant occupying 3,000 of a 15,000 sq ft building pays 20% of CAM. This works cleanly when the cleaning program covers the entire building uniformly. It creates friction when one tenant generates disproportionate traffic — a medical practice with 80 patient visits per day versus an accounting firm with four employees — and both pay the same CAM rate.
For buildings with mixed-use tenants where traffic is genuinely uneven, consider a modified allocation that weights the cleaning portion by traffic estimate rather than square footage. Document the methodology in the lease addendum so it survives tenant turnover.
East Metro Seasonal Adjustment
Minnesota buildings carry a seasonal cost spike from November through April that does not exist in most lease templates drafted outside the region. Salt season increases hard-floor maintenance frequency and accelerates floor finishing wear. A CAM budget for an Oakdale or White Bear Lake building that does not include a winter floor program line item will produce a year-end overage when the scrub-and-recoat bill arrives in March.
The straightforward fix is to build the winter cleaning premium into the annual CAM estimate rather than treating it as an extraordinary expense. A cleaning contractor who works in the East Metro should build the seasonal protocol into the base scope — if yours does not, the year-end true-up is their scope gap, not an act of nature.
Getting to a Number
For budgeting purposes, request a written quote with an annual total rather than a per-visit rate. The annual total accounts for frequency, seasonal adjustment, and supply costs in one figure, which is simpler to divide by square footage and allocate to tenants than a rate card with multiple line items.
Request a written quote for your Oakdale or East Metro building — the quote includes an annual cleaning cost figure appropriate for your CAM budget. Or call (866) 958-8773 during business hours.