Making Informed Lease Decisions
Financial analysis is the backbone of every good lease decision. It’s the practical application of financial principles, combined with years of experience in the marketplace, to help occupiers understand what they’re actually committing to before they sign. And in commercial real estate, where a single lease can represent millions of dollars in overhead over a decade or more, getting that analysis right is everything.
Evaluating Leases
Whether you’re renewing in place or considering a relocation, the process starts with a thorough financial evaluation of your options. That means looking beyond the asking rent and understanding the true cost of each alternative, what we call “occupancy costs.”
This is where a lot of tenants get tripped up. What looks like the cheapest deal on paper often isn’t, once you account for the full economics of the transaction. Commercial leases have a surprisingly complex financial structure, and the gap between a headline rate and the actual cost can be substantial.
A typical office lease may include any or all of the following:
- Base rental payments (fixed or escalated)
- Additional rent provisions for operating expense increases
- Caps or ceilings on operating expense escalations
- Periods of abated or reduced rent
- Landlord contributions for tenant improvements, architectural fees, IT cabling, moving expenses, leasing commissions, and existing lease obligations
- Parking charges
- Renewal, expansion, contraction, and cancellation options
- Electrical capacity (watts per square foot) and HVAC charges
- Rent and electricity for signage
- Common area factors (rentable vs. usable square feet)
- Costs to comply with government regulations
- Design and construction management fees
- Interest charges on above-standard leasehold improvements
Sample Lease Analysis by Coy Davidson
Comparing Occupancy Costs
Once all the occupancy cost components are on the table, the next step is projecting total costs over the full lease term. Those annual cash flows are then run through a discounted cash flow analysis, net present value, at a discount rate that reflects your cost of capital. The result is what I call “the price of the deal.”
To make comparisons meaningful, I express that discounted present value as a level rate per square foot. That normalizes the financial structure across proposals so you can evaluate them on a true apples-to-apples basis. For tenants with meaningful tax considerations, after-tax cash flows can be discounted at a rate reflecting your after-tax cost of debt.
When comparing alternatives, I analyze occupancy costs both in absolute terms and on a present value basis, measured against both rentable and usable square feet. That accounts for differences in common area factors and space efficiency, producing what I call the “effective occupancy cost per square foot.” It’s the single most useful metric for comparing lease proposals across the board.
Today’s software and AI tools make it easy to run these calculations quickly. I learned to analyze deals on an HP-12C financial calculator, which probably dates me a little. But the principles behind the analysis are what matter most, especially when it comes to the art of negotiation.
Net Effective Rents
Where the Rubber Meets the Road
Great deals aren’t just found, they’re negotiated. And effective negotiation requires understanding what’s actually driving the economics on both sides of the table.
Several factors shape what a tenant and their broker can realistically achieve:
- The tenant’s attractiveness to the landlord and overall negotiation leverage
- Size and creditworthiness of the tenant
- Market conditions and the building’s competitive position
- Timing and how the negotiations are positioned
- The negotiation skills of everyone at the table
The most powerful tool in any negotiation is the ability to measure the landlord’s effective rental rate, which is what the landlord actually nets from the deal after transaction costs, before debt service, expressed on a per-square-foot basis. When you can quantify that number, you stop guessing and start negotiating from a position of real knowledge.
The Anatomy of the Effective Rental Rate
Net effective rent describes what a tenant actually pays after factoring in all concessions and incentives. Landlords use this metric to evaluate their own deals, and tenants should be using it too.
From the landlord’s perspective, they’re projecting three things:
- Market rental rates: what comparable buildings are commanding
- Operating costs: what it actually costs to run the building
- Transaction costs: tenant improvements, commissions, free rent, and the like
In simple terms, it’s a projection of all the cash flowing in and out from leasing and operations. Every landlord is targeting an effective rent structure that supports their debt service and delivers a return to investors. Understanding where that floor is, and what moves it, is what separates a good deal from a great one.
Comparing effective rental rates across competing proposals, and against other transactions in the same building, is one of the best indicators of what’s truly achievable. Even two leases with identical base rents rarely yield the same return to the landlord.
Learning to Think and Speak Like a CFO
When someone starts out in commercial real estate brokerage, the first thing senior brokers tell them is to learn the market. Know what’s available, what it rents for, and the physical characteristics of every building in your territory. That’s the baseline.
But just as important is a deep understanding of lease economics. For tenant representatives especially, the ability to measure occupancy costs isn’t optional, it’s the job. Every office tenant wants the best space their budget can support. Helping them find and capture that value requires knowing the numbers cold.
That’s an Impressive Spreadsheet… What Does It Mean?
Software and AI have made it easy to produce polished, sophisticated-looking financial models. But I’m consistently surprised by how many brokers, even experienced ones, can’t explain what the numbers actually mean or how they affect the outcome of a deal.
I built my understanding of lease economics on a financial calculator and a legal pad. I believe every broker should go through that same process before relying on any software. If you’re going to hand a client a detailed financial analysis, you should be able to walk them through every line of it and explain exactly how each variable moves the needle in negotiation.
The numbers only become leverage when you understand them well enough to use them.
Frequently Asked Questions
Q: My landlord’s proposal shows a lower base rent than the competing building down the street. Does that mean it’s the better deal?
Not necessarily, and this is one of the most common misconceptions in lease negotiations. Base rent is just one piece of the equation. Once you factor in operating expense escalations, the common area factor (how much rentable square footage you’re paying for versus what you actually occupy), tenant improvement allowances, free rent periods, and parking costs, the deal that looked cheaper on the surface can end up costing significantly more over the life of the lease. A proper occupancy cost analysis, run on a net present value basis and expressed as an effective cost per usable square foot, is the only reliable way to compare proposals side by side.
Q: How do I know if I’m leaving money on the table when negotiating my lease?
The best way to protect yourself is to understand the landlord’s effective rental rate before you sit down at the table. Landlords underwrite every deal against a projected return, and there’s almost always room between what they ask for and what they’ll actually accept. When you can calculate what the landlord nets after tenant improvements, commissions, and free rent concessions, you know where their real floor is. That knowledge shifts the dynamic entirely. Tenants who negotiate without that analysis are essentially negotiating blind, and in most cases, they’re leaving real dollars behind.
