CAM Audit Glossary: 93 Terms for Firms

Lease Types

The most tenant-unfavorable version of a net lease, where the tenant covers every cost with no landlord obligations at all, not even in the event of casualty or condemnation. Firms use it as a benchmark. Any landlord-side cost showing up in a bondable lease's reconciliation should not appear there at all.

Expenses & Charges

A separate charge for bookkeeping and reconciliation-prep work, billed alongside, and sometimes on top of, the management and administrative fees. Many leases never mention an accounting fee at all, which means it often has no cap of its own.

Financial Concepts

An accounting method that recognizes an expense in the period it was incurred, regardless of when the invoice was actually paid. Most commercial lease CAM definitions assume accrual accounting, since it's the GAAP standard, and a landlord billing a cost in the wrong lease year often traces back to an inconsistent accrual practice.

Expenses & Charges

A separate line item some landlords bill for general administrative work on the CAM pool, such as processing invoices and preparing statements, apart from the management fee for day-to-day building operations. Some leases fold administrative costs into the same capped bucket as the management fee; others allow a separate charge only if the lease names it.

Building Operations

Metered charges for HVAC service outside a building's standard operating hours. This is separate from the base CAM utility allocation, and the two get double-billed when the lease doesn't clearly separate them.

Financial Concepts

The spreading of a large capital cost over its useful life, recognizing the expense in installments rather than all at once. In CAM, some leases permit landlords to amortize capital expenditures and pass the annual amortized portion through to tenants.

Legal & Compliance

A lease provision that sends unresolved CAM disputes to binding arbitration instead of court. It changes both how a dispute should be framed and where it ultimately gets decided.

Taxes & Insurance

The value a local taxing authority assigns to a property, multiplied by the applicable tax rate, or mill rate, to calculate the property's tax bill. Assessed value is the figure your firm verifies against the lease's tax pass-through language, since an inflated assessment raises every tenant's tax-based CAM charge.

Legal & Compliance

The contractual date by which a tenant must initiate a CAM audit after receiving the annual reconciliation statement. Missing the audit deadline can permanently bar the tenant from disputing that year's charges under a binding-and-conclusive clause.

Legal & Compliance

A lease provision granting tenants the contractual right to inspect, review, and verify a landlord's CAM records and reconciliation calculations. Audit rights define the timeframe and procedure for initiating a CAM audit.

Lease Terms & Dates

The fixed, recurring rent a commercial tenant pays before CAM, real estate tax, and insurance charges, which are usually billed separately as additional rent. Base rent is set in the lease and typically escalates on a schedule independent of the CAM reconciliation.

Lease Terms & Dates

A reference year, typically the first year of the lease or year of building occupancy, used in gross leases to establish a baseline for operating expenses. Tenants pay only increases above the base year's actual costs in subsequent years.

Caps & Limits

A cap measured against the base year dollar figure instead of the prior year's actual. Every future ceiling traces back to that one number, so an error in the base year follows the lease for its full term.

Legal & Compliance

A lease provision stating that a reconciliation statement becomes final and binding if the tenant does not object or initiate an audit within the specified audit window. These clauses are designed to give landlords finality on past reconciliations.

Building Operations

The software and hardware that automates a building's HVAC, lighting, and access controls. Upgrades to a BMS get billed as CAM 'maintenance' more often than they should, when they're really capital work.

Expenses & Charges

CAM charges means common area maintenance charges passed through to tenants for shared property costs such as parking lots, lobbies, landscaping, lighting, security, trash, and other spaces used by multiple occupants. CAM rent is separate from base rent in many NNN leases, billed as a monthly estimate, and corrected through an annual reconciliation.

Expenses & Charges

The landlord's estimate of CAM costs for the coming year, used to set the monthly CAM payments a tenant makes before the annual reconciliation. An inflated budget means the tenant overpays all year and then sees a "credit" at true-up time, one that can mask a real overcharge underneath.

Caps & Limits

A lease provision limiting the annual increase in controllable CAM expenses to a specified percentage (commonly 3 to 5%) or a fixed dollar amount. CAM caps protect tenants from runaway expense escalation in multi-year leases.

Expenses & Charges

The annual process by which a landlord compares estimated CAM payments collected from tenants against actual CAM expenses incurred. Tenants receive a reconciliation statement showing whether they owe additional amounts or are due a refund.

Caps & Limits

The specific expense categories a lease carves out of the cap calculation, usually taxes, insurance, and utilities. Moving a capped expense into an excluded category is one of the most common ways a landlord defeats a cap without ever exceeding the stated percentage.

Financial Concepts

A cost that extends the useful life of a building asset, improves its value, or replaces a major component, such as a new roof, HVAC system, or parking lot repaving. Capital expenditures are typically excluded from CAM in most commercial leases.

Financial Concepts

An accounting method that recognizes an expense in the period it was actually paid, regardless of when the underlying service was performed. Cash basis accounting is simpler than accrual accounting but is not the GAAP standard, and mixing cash-basis vendor bills into an otherwise accrual-based reconciliation creates a timing error a firm should be able to name precisely.

Caps & Limits

Lease language letting a landlord recover a prior year's under-billing, a year actual costs came in below the cap, in a later year. Without this specific clause, a landlord cannot bill a 'makeup' charge for a soft year.

Building Operations

The shared portions of a commercial property accessible to all tenants and visitors: lobbies, hallways, parking lots, restrooms, elevators, and landscaped areas. Only legitimate common area expenses should be included in the CAM pool.

Building Operations

Electricity, water, and gas for shared spaces, like lobbies, parking lot lighting, and common restrooms. CAMAudit's Utility Overcharge rule tests this pool for double-billing.

Caps & Limits

Operating expenses that are within the landlord's management control, such as landscaping, janitorial, security, and management fees. CAM caps typically apply only to controllable expenses, limiting annual increases.

Calculations & Formulas

CAM costs normalized to a per-square-foot figure, used to benchmark a client's bill against comparable properties in the same market. A statement wildly out of line with market cost-per-square-foot data is worth a closer look even before any specific rule violation turns up.

Calculations & Formulas

An escalation tied to the Consumer Price Index rather than a fixed percentage. A common overcharge here is the landlord using the wrong CPI index (CPI-U versus CPI-W), the wrong base month, or ignoring a floor or ceiling the lease specifies.

Lease Types

A lease negotiated by a large, creditworthy tenant, usually with a below-market CAM cap and a narrower CAM definition than a smaller tenant in the same building would get. Firms use these terms as a benchmark when disputing a weaker client's broader exposure in a comparable property.

Caps & Limits

A cap where unused increase room from a below-cap year carries forward into later years. The carryforward can be added straight to the base (linear) or compounded. Either way, a quiet year raises what the landlord can bill later.

Taxes & Insurance

An attempt to bill a tenant, through CAM, for the deductible amount the landlord pays out of pocket after an insurance claim, rather than the ongoing insurance premium itself. Most leases are silent on deductible recovery, and silence generally means the deductible is not a recoverable CAM charge.

Financial Concepts

An accounting method that spreads the cost of a long-lived asset over its useful life. Depreciation is almost universally excluded from commercial lease CAM definitions. Tenants pay for actual expenses, not accounting allocations.

Legal & Compliance

A legal doctrine that delays the start of the statute of limitations until the injured party knew or reasonably should have known about the injury. In CAM disputes, the discovery rule may extend the lookback period when overcharges were concealed by the landlord.

Legal & Compliance

A factual dispute letter draft specifying identified CAM overcharges, the lease provisions reviewed, and the amount requested for correction. The draft is a client-review deliverable from a CAM audit engagement, not legal advice.

Caps & Limits

A cap written as a hard dollar ceiling, often per square foot per year, instead of a percentage. It does not depend on a prior year baseline, which makes it simpler to check, but landlords sometimes multiply it against the wrong square footage figure.

Lease Types

A net lease where the tenant pays real estate taxes and insurance on top of base rent, but the landlord keeps responsibility for CAM and maintenance costs. Reading an NN lease as a full NNN lease pulls maintenance costs into audit scope the lease never authorized.

Building Operations

Routine service contracts for building elevators, including inspection, repair, and parts. This is recoverable CAM. A full elevator modernization or system replacement is capital, not maintenance.

Calculations & Formulas

The specific mechanism a lease uses to raise rent or expense charges year over year, whether that's a fixed percentage, a CPI-linked adjustment, or a formula tied to actual expense growth. The escalation formula is a contractual term, not an industry default, so reading the clause is the only way to verify an increase is correct.

Legal & Compliance

A signed statement confirming the current status of a lease, including rent, term, and whether any disputes are open. Landlords often ask tenants to sign one before a property sale or refinance.

Lease Terms & Dates

A dollar threshold, typically set at the base year's per-square-foot operating cost, above which the tenant pays their share of operating expense increases. The landlord covers all costs up to the expense stop; costs above it are passed through to tenants.

Building Operations

Required inspection, testing, and monitoring of fire alarm and life-safety systems. This is recoverable CAM. A code-driven system replacement or upgrade is capital, not testing.

Expenses & Charges

The portion of the CAM pool that stays the same no matter how full the building is: property taxes, insurance, and any fixed-rate management fee. Fixed CAM sits opposite Variable CAM, and the split matters because only variable costs can legally be grossed up to a stabilized occupancy level.

Legal & Compliance

A clause that excuses late performance because of events outside a party's control, such as natural disasters or government orders. Some landlords cite it to explain a late CAM reconciliation.

Lease Types

A lease structure, common in office towers, where rent is supposed to cover all operating costs with no separate CAM pass-through. The audit angle is confirming a landlord has not hidden a pass-through charge inside a lease marketed to the tenant as full service.

Financial Concepts

The standard framework of accounting rules used to prepare financial statements in the United States, governing when and how expenses are recognized. Whether a landlord's CAM reconciliation follows GAAP accrual accounting or a looser cash basis changes which lease year an expense should land in, and mixing the two methods is a common source of timing disputes.

Taxes & Insurance

The baseline commercial liability policy covering claims for bodily injury or property damage occurring on the property, and the coverage type most commercial leases explicitly permit landlords to pass through as CAM. Firms use general liability as the floor coverage to test which other policy lines a landlord may have improperly bundled into the same premium line.

Calculations & Formulas

The total revenue figure some management fees and percentage-lease rent are calculated against. Leases usually define exactly what counts, and what's excluded, like sales tax or returns, but landlords sometimes apply a broader receipts definition than the lease actually authorizes.

Calculations & Formulas

A lease mechanism that adjusts variable operating expenses upward to reflect what they would have been if the building were fully occupied (typically 95%). Gross-ups are designed to ensure each tenant pays their true share of common costs.

Calculations & Formulas

The multiplier applied to variable operating expenses to normalize them to a fully-occupied building level. Calculated as the target occupancy percentage divided by the actual occupancy percentage during the reconciliation period.

Lease Types

A lease where the tenant leases the land only and typically owns the building and improvements on it. Because the tenant already owns the structure, CAM pool scoping looks different: a cost the tenant might otherwise dispute as an improper capital charge may actually belong in the tenant's own capital budget instead.

Taxes & Insurance

The process of verifying that insurance costs passed through to tenants in a CAM reconciliation match the coverage types and amounts permitted by the lease. Insurance overcharges typically arise when landlords include broader corporate coverage than the lease allows.

Building Operations

Cleaning and custodial work for common areas: lobbies, restrooms, and hallways. It's a controllable expense subject to any CAM cap, and a common target for vendor markups or related-party billing.

Building Operations

Internal costs of running the landlord's own business, such as corporate officer salaries, head office rent, leasing commissions, and marketing expenses, that are explicitly excluded from the recoverable expense pool in most commercial leases.

Building Operations

Grounds maintenance for common area exteriors: mowing, planting, and seasonal upkeep. Like janitorial services, it's controllable and vendor-heavy, which makes it a frequent target for related-party markups.

Lease Terms & Dates

The 12-month period a lease uses for CAM reconciliation, escalation calculations, and cap testing. A lease year does not always match the calendar year. It commonly runs from the lease's commencement date or a landlord-defined fiscal year instead.

Lease Terms & Dates

The multiplier that converts a tenant's usable square footage into rentable square footage by adding a proportional share of the building's common areas. A load factor of 1.15 means the landlord adds 15% to the tenant's usable space to reach the rentable figure billed for rent and CAM.

Legal & Compliance

The number of prior lease years a tenant can audit or dispute under the lease terms and applicable statute of limitations. The lookback period determines how far back an overcharge recovery can extend.

Expenses & Charges

Management fee means the commercial property management fee a landlord or manager bills for administering a property and its CAM or operating expense pool. Property management fees are usually calculated as a percentage of gross receipts, base rent, CAM costs, or total operating expenses, subject to the lease cap and fee base.

Lease Types

A hybrid lease structure between a full gross lease and a NNN lease, where specific operating expenses are negotiated between landlord and tenant. Some costs are included in base rent; others are billed separately as pass-throughs.

Legal & Compliance

A clause guaranteeing a tenant terms, such as rent, CAM definition, or concessions, no less favorable than what the landlord gives comparable tenants in the same property.

Lease Types

The base structure behind the whole net-lease family (N, NN, NNN), where the tenant pays some portion of property costs, usually starting with real estate tax, on top of base rent. Before scoping a CAM audit, your firm has to confirm exactly which cost categories a given net lease pulls in, since "net lease" alone says very little.

Financial Concepts

A property's total rental and operating income minus its operating expenses (including property taxes), before debt service and income taxes, the core profitability metric landlords and investors use to value commercial real estate. Because a property's sale value is typically NOI divided by a market capitalization rate, every dollar landlords keep out of operating expenses and into net income raises the property's valuation.

Caps & Limits

A cap that resets every year against the prior year's actual expense. Nothing carries forward. If actual costs come in under the cap one year, the landlord gets no extra room to use later.

Expenses & Charges

The all-in cost of occupying a space: base rent plus CAM, real estate tax, and insurance pass-throughs combined. Firms use occupancy cost as a single benchmark figure to judge whether a client's total spend is in line with comparable properties, separate from any single-line dispute.

Expenses & Charges

Operating expense means the recurring cost of running and maintaining a property or business in a commercial lease or accounting context. The operating expenses definition usually refers to recoverable OpEx such as CAM, real estate taxes, insurance, utilities, janitorial, repairs, and management fees, subject to lease exclusions.

Caps & Limits

A cap written as a fixed annual percentage increase, commonly 3% to 5%. The same stated percentage can produce different dollar ceilings depending on whether the lease compounds it year over year or applies it as simple, linear growth.

Lease Types

A retail lease structure where the tenant pays base rent plus a percentage of gross sales above a set breakpoint. Overcharge risk shows up when the landlord's gross sales definition, or the breakpoint calculation itself, does not match what the lease specifies.

Calculations & Formulas

The percentage of total CAM costs allocated to a specific tenant based on the ratio of their leased square footage to the total leasable area of the building or property. The denominator is a critical variable that landlords sometimes manipulate.

Taxes & Insurance

Coverage for physical damage to the building itself, from causes such as fire, storm, or vandalism, based on the property's replacement cost rather than its market value. Property insurance is the coverage category tenants most often legitimately share through CAM, since it protects the shared physical asset they occupy.

Calculations & Formulas

Prorated means using a daily rate or stated allocation method to divide a charge by the portion of time, space, or expense that applies. The prorated definition in a commercial lease usually matters when rent, CAM estimates, tax charges, insurance, or credits cover only part of a month, part of a lease year, or part of a tenant occupancy period.

Taxes & Insurance

Real estate tax means the property tax local governments assess against land, buildings, and other taxable real estate. In a commercial lease, real estate taxes are often passed through to tenants under a triple net lease, but only for the tax parcel, property period, and pro-rata share the lease permits.

Calculations & Formulas

The dollar difference between a tenant's estimated CAM payments and the actual costs billed at year-end. The variance should map cleanly to the true-up charge or credit; when it doesn't, that gap is the signal to request supporting detail.

Legal & Compliance

A contractual right to extend the lease term. Exercising it can reset the base year or the CAM definition, depending on the exact renewal language.

Lease Terms & Dates

The square footage figure used to calculate a tenant's pro-rata share, combining the tenant's usable space with an allocated portion of common areas. Landlords use this figure, not usable square footage, to set the CAM denominator and the tenant's monthly base rent.

Financial Concepts

The estimated cost to rebuild a property at current construction prices, the value basis most commercial property insurance policies are written on, distinct from the property's market value or depreciated book value. A mismatch between a property's actual replacement cost and its stated insured value signals either underinsurance risk to the landlord or an inflated premium pass-through to tenants.

Building Operations

Work performed on a building's roof. Routine patching and leak repair are typically recoverable CAM. A full roof replacement is capital. The invoice's own words, 'patch' versus 'replace,' decide which bucket the cost belongs in.

Building Operations

Guard staffing, monitoring, and access control for common areas. It's a controllable, staffing-heavy cost pool where coverage billed beyond what one property actually uses can inflate the CAM pool.

Legal & Compliance

Whether a tenant may withhold or offset a disputed CAM amount from rent while a dispute is pending. Most commercial leases bar this remedy outright.

Taxes & Insurance

A one-time tax levy a local government charges against a property to fund a specific public improvement, such as a new road or sewer line, separate from the regular annual property tax bill. Many commercial leases define real estate tax narrowly enough to exclude special assessments from CAM.

Legal & Compliance

The maximum period during which a legal claim can be filed after a cause of action arises. For CAM overcharge disputes, the statute of limitations for written contract claims typically ranges from 3 to 6 years depending on the state.

Lease Terms & Dates

An arrangement in which a tenant leases part or all of its space to a third party while remaining responsible to the landlord under the original, or prime, lease. CAM allocation under a sublease is governed by both the prime lease and the sublease document, and the two can conflict on what costs the subtenant actually owes.

Taxes & Insurance

The formal process of contesting a property's assessed value with the local taxing authority, aiming to lower the tax bill. When tenants fund real estate taxes through CAM or a triple net lease, any refund or reduction from a successful appeal should flow back through the same allocation the tax charge used.

Building Operations

Hauling and disposal services for common-area waste. It's a controllable expense that shows up often in vendor-concentration reviews because of how easily it can be marked up.

Lease Types

A lease structure in which the tenant pays base rent plus three additional cost categories: real estate taxes, building insurance, and CAM/operating expenses. In a true NNN lease, tenants bear nearly all property costs beyond mortgage debt service.

Calculations & Formulas

The year-end reconciliation payment or credit that results from comparing the tenant's estimated monthly CAM payments against actual annual CAM costs. A positive true-up means the tenant owes more; a negative true-up means the tenant is due a refund.

Taxes & Insurance

A liability policy that sits above a landlord's primary general liability coverage, extending protection once the primary policy's limits are exhausted. Most commercial leases authorize only standard, primary-level coverage in the CAM pool, making umbrella premiums one of the more frequently improper insurance pass-throughs.

Caps & Limits

Operating expenses outside the landlord's management control, typically taxes, insurance, and utilities, that are excluded from CAM cap limitations and can be passed through in full regardless of annual increase amount.

Lease Terms & Dates

The exact floor area a tenant occupies and controls exclusively, measured before any common-area add-on. Usable square footage is the starting point for calculating rentable square footage and, from there, the tenant's pro-rata share.

Financial Concepts

The expected service life of a building component or asset, used to determine depreciation and amortization schedules. In CAM disputes, artificially short useful lives inflate amortized capital expense pass-throughs.

Calculations & Formulas

The percentage of a building's total leasable area that is vacant during the reconciliation period. The vacancy factor affects the gross-up calculation and, when misapplied, can inflate the CAM pool or each tenant's allocated share.

Expenses & Charges

The portion of the CAM pool that moves with how full the building is: janitorial, common-area utilities, trash removal, landscaping, and similar day-to-day operating costs. Variable CAM is the only category a gross-up clause can legitimately adjust to a stabilized occupancy level, typically 95%.

Calculations & Formulas

A blended pro-rata share calculation used when a tenant's square footage, or the building's total leasable area, changes partway through the year. Instead of applying one share percentage to the whole year, the correct calculation weights each period by how long it was in effect.

Taxes & Insurance

Insurance covering medical costs and lost wages for employees injured on the job, typically covering on-site building staff such as maintenance and security personnel in a CAM context. Overcharges occur when a landlord allocates payroll for corporate or off-site employees, not staff actually working at the property, into a single property's premium.