The base rent section sets the fixed monthly amount you pay to occupy the building, how it increases each year, and when and how it is due. Related provisions explain how the owner applies your payments, how partial months are prorated, and what money you must deliver when you sign.
What this clause does
Base rent is the fixed charge for the right to occupy the building. In a triple net lease it covers occupancy alone; property taxes, insurance and common area costs are billed separately. Industrial rent is usually quoted per square foot, monthly in some markets and annually in others, and the lease converts that rate into a dollar schedule for each year of the term.
The section also sets the due date (typically the 1st), the payment method, and how partial months are prorated at the start or end. Read it for what it does not say, too. Many leases put no obligation on the owner to send an invoice, and an incorrect invoice does not change what you actually owe. Rent is due whether or not a bill arrives.
Escalations add up quietly
Almost every industrial lease raises rent each year. Justin's tenant book describes how that norm has shifted: increases tied to the Consumer Price Index were still common in the mid-2000s, a flat 3 percent became standard for years, and tight markets later pushed fixed increases to 3 to 4.5 percent.
A point and a half sounds small in a negotiation. Compounded over a five-year term, Justin calculates it at roughly two extra months of rent. Treat the escalation rate as a real economic term. Compare it to where you expect market rents to go, and if you accept a CPI-based increase, ask for a cap as well as the floor the owner will want.
Watch the timing too. If the lease includes free rent, confirm whether the first increase lands 12 months after the lease starts or 12 months after you begin paying. The difference is real money on a large building.
How your payments get applied
Many leases let the owner apply any payment first to late charges, interest and other outstanding items before base rent, no matter what you write on the check or wire memo. If an earlier charge is unpaid, your full rent payment can leave rent itself short, and a late charge follows.
Accepting a partial payment usually does not waive the owner's right to the rest. A returned payment can bring a fee and a demand for certified funds going forward. Automate payments, keep your accounts payable team aware of the lease's grace period, and reconfirm payment instructions in writing whenever the building sells or the management company changes.
Money due at signing
Most leases list the amount due at signing: typically the first month's base rent, the first month's estimated operating expenses, and the security deposit. Many owners will not countersign until those funds have cleared, so budget for the wire before your target signing date.
Ask for one clear statement of the total due and wiring instructions, and confirm those instructions by phone with a known contact before sending funds. While you are at it, make sure the lease commencement date, rent commencement date and possession date are each defined. Confusion among those three dates causes more rent disputes than the rent rate itself. Have a real estate attorney review the final schedule against your letter of intent.
Comparing rent across buildings
Two buildings quoted at the same rate can cost very different amounts. Compare total occupancy cost, meaning base rent plus operating expenses, and do it over the full term with escalations included. A lower starting rate with steeper annual increases can end up more expensive than a higher rate with flatter bumps.
Concessions change the math as well. Justin's landlord book describes how owners compare proposals on a net effective basis: total rent over the term, less free rent and other concessions, spread across the years of the lease. You can run the same calculation on your side to compare offers on equal footing.
Finally, confirm how the rent was calculated. In most industrial leases the monthly rent is a fixed dollar figure even though it was negotiated per square foot, so a later remeasurement usually does not change it. Settle any question about the building's size before you sign, with help from an architect if needed, rather than after.
If you are the tenant
- Model the full-term rent schedule, not just the starting rate, and compare escalations against your forecast of market rents.
- If the increase is tied to CPI, negotiate a cap as well as a floor.
- When free rent is included, confirm when the first increase occurs relative to the paid months.
- Set up automatic payment and share the lease's due date and grace period with your accounts payable team.
- Verify wiring instructions by phone before sending the signing payment or paying a new owner.
If you are the owner
- Spell out exactly what is due at execution and where to send it; consider a welcome letter with payment instructions.
- Do not countersign until the tenant's funds have cleared.
- Load every escalation date into your accounting system; missed increases are hard to collect later.
- Set escalations to run from lease commencement when free rent is granted.
Go deeper in Justin's books
Both books walk through leases chapter by chapter, from the tenant side and the owner side.
The general idea is that the base rate should adjust each year to keep up with inflation. In practice, this is subject to supply and demand market dynamics at the time of the negotiation.
Common questions
Do industrial leases have annual rent increases?
Nearly all do. Fixed increases around 3 percent have long been common, and tighter markets have produced higher fixed bumps. The rate is negotiable and should be compared to where you expect market rents to go.
Does base rent include taxes and maintenance?
In a triple net lease, no. Those costs are billed on top of base rent. In a gross or modified gross lease some or all of them are included, so read the operating expense section to know which structure you have.
What do I pay when I sign an industrial lease?
Typically the first month's base rent, the first month's estimated operating expenses and the security deposit. Your lease should state the exact total.
General information about how industrial leases commonly work, not legal advice. Every lease is different: have a California real estate attorney review yours before you sign.