The security deposit clause sets how much cash (or other security) you give the owner at signing, what the owner may use it for during and after the lease, and when the balance comes back to you. It protects the owner against unpaid rent, damage and restoration costs, and it is not a prepayment of your last month's rent.
What this clause does
The deposit is money the owner holds as protection in case you fail to meet your obligations. The clause usually lets the owner draw on it for unpaid rent, repairs you should have made, restoration you left undone, or any other default. If the owner uses part of it during the term, you must top it back up.
Most leases also say the owner can hold the money with its other funds, pays no interest on it, and returns what remains within a set period after you move out. Some add triggers that raise the required amount later: when the rent increases, when you sublease or assign, or when control of your company changes.
How owners size it
Justin's landlord book describes the factors owners weigh: your credit and financial statements, how long you have been in business, how much the owner is spending on improvements and commissions, the length of the lease, the size of the space and where the market sits in its cycle. One month of rent plus operating expenses is a common starting point. Smaller multi-tenant spaces often carry two months, and a newer company taking a large building can see a request for several months or more.
If the owner asks for more than you expected, ask why. A specific concern, such as a large improvement allowance or thin financials, can often be addressed another way, through updated statements, a guaranty or a different structure.
Negotiate the deposit in the proposal stage, alongside rent and improvements, rather than discovering the number in the lease draft. Once the business terms are signed, you have less room to trade. If your company is growing quickly, consider asking for a reduction trigger tied to measurable milestones, such as audited financials showing a stated net worth, so the security can step down as your credit improves.
Where it goes wrong
The most common mistake is treating the deposit as your last month's rent. It is not, and skipping that payment can put you in default at exactly the moment you are trying to leave cleanly. The owner will want the deposit available for restoration costs discovered at the move-out walk-through.
Other problems are quieter. Automatic increase clauses can ratchet the deposit up every year. When the building sells, confirm the new owner acknowledges receiving your deposit, usually through the estoppel certificate you will be asked to sign. And if your move-out obligations are heavy, such as removing racking, cranes or process piping, the restoration bill can exceed the deposit and become a separate claim.
Structuring a larger deposit
When the owner needs more security, you can make it cheaper. A burn-down structure credits part of the extra deposit back to you on lease anniversaries, often one month per year until one month remains, as long as you are not in default. Some owners will accept the extra amount in installments.
Letters of credit deserve a careful look from both sides. In Industrial Intelligence Justin cautions tenants that they can be less practical than they sound, since banks and owners both dislike disputes over whether a draw is justified. In Industrial Income he notes why owners of large buildings may prefer them: a letter of credit can be drawn even if the tenant files for bankruptcy, and it should run past lease expiration to cover the move-out. Have a real estate attorney review the draw conditions and return timing before you sign.
Getting your deposit back
The return of your deposit is decided years before you move out. At move-in, photograph and document the building's condition, including the slab, dock equipment, roof and office finishes, and keep that record with your lease. Agree in the lease on what you must remove at the end and what can stay, so there is no debate over racking, cabling or office improvements later.
As expiration approaches, schedule a walk-through with the owner or property manager early enough to complete any agreed work before you hand back the keys. Ask the lease to require an itemized accounting of any deductions along with the refund, and a firm deadline for both. If the building has sold during your term, confirm in writing that the new owner holds your deposit, since that is who will be writing the refund check.
If you are the tenant
- Ask the owner to explain any request above one month and offer to address the underlying concern directly.
- Negotiate a burn-down so an enhanced deposit converts to rent credits over time while you are in good standing.
- Strike or limit automatic increases tied to rent bumps, subleases or ownership changes.
- Pay your final month's rent; the deposit is not a substitute.
- Confirm the deposit amount in every estoppel certificate and after any sale of the building.
If you are the owner
- Size the deposit against your actual exposure: improvements, commissions and the cost to restore the building.
- For small multi-tenant spaces, a two-month deposit can offset restoration risk and encourage a clean move-out.
- If you accept a letter of credit, make sure its term extends beyond lease expiration and check the expiration date before the tenant vacates.
- Compare the deposit on file with estimated restoration costs well before expiration.
Go deeper in Justin's books
Both books walk through leases chapter by chapter, from the tenant side and the owner side.
When it comes to security deposits, cash is king.
Common questions
Can I use my security deposit as my last month's rent?
Generally no. The deposit secures your obligations, including move-out restoration, and skipping rent can put you in default. Pay the final month and let the deposit be reconciled after the walk-through.
How big is a typical security deposit on an industrial lease?
One month of rent plus operating expenses is a common baseline. It rises with weaker credit, large improvement allowances, smaller multi-tenant spaces and newer businesses.
Can I give a letter of credit instead of cash?
Often, especially on larger leases, though owners set the terms. Review the draw conditions, the expiration date and the cost of the credit line with your bank and attorney.
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.