Commercial Lease Calculators
Interactive calculators with formulas and worked examples for common commercial lease math. These cover NNN costs, CAM reconciliation, rent escalation, pro-rata share, effective rent, and lease abstraction ROI. Enter your own numbers and get results right away.
Triple Net Lease Calculator
A NNN (triple net) lease requires the tenant to pay base rent plus three operating expense categories: property taxes, building insurance, a...
Total Annual Cost = Base Rent + Property Taxes + Insurance + CAM/Maintenance
CAM Reconciliation Calculator
At the end of each lease year, landlords reconcile estimated CAM payments against actual expenses. If actual expenses exceed estimates, tena...
CAM True-Up = (Actual CAM Expenses × Tenant Pro-Rata Share) − Monthly CAM Paid
Rent Escalation Calculator
Commercial leases typically include annual rent escalations. The two most common methods are fixed percentage increases (e.g., 3% per year) ...
Fixed %: Year N Rent = Base Rent × (1 + Rate)^(N−1)
Lease Abstraction ROI Calculator
AI lease abstraction costs $15 per lease and takes 5-15 minutes. Manual abstraction cost depends on staff rate, reviewer seniority, lease co...
Savings = (Manual Cost per Lease − AI Cost per Lease) × Number of Leases
Pro-Rata Share Calculator
Pro-rata share determines what percentage of shared building expenses a tenant is responsible for. It is calculated by dividing the tenant's...
Pro-Rata Share = Tenant Leased Area ÷ Total Rentable Building Area
Effective Rent Calculator
Effective rent adjusts the face rent (stated monthly rent) to account for landlord concessions - free rent periods and tenant improvement (T...
Effective Annual Rent = (Total Rent over Term − TI Allowance − Free Rent Value) ÷ Lease Term in Years
Commercial Lease Cost Calculator
A comprehensive calculator for total commercial lease occupancy cost. Enter your base rent, lease type charges, and square footage to see yo...
Total Annual Cost = (Base Rent + Operating Expenses + CAM) × Square Footage
Percentage Rent Calculator
Percentage rent clauses require retail tenants to pay additional rent once their sales exceed a "natural breakpoint." This calculator shows ...
Percentage Rent = (Gross Sales − Natural Breakpoint) × Overage Rate
Rent Per Square Foot Calculator
Convert between total rent and per-square-foot rates for commercial leases. Whether you have a total annual rent figure or a per-square-foot...
Rent Per Sq Ft = Total Annual Rent ÷ Leasable Square Footage
Frequently Asked Questions
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What is a NNN expense calculator?
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