What Questions Should I Ask Before Signing Any Commercial Lease?

Start with the true cost, not the base rent

Almost every expensive lease mistake starts with comparing the wrong number. Before you discuss square footage, paint, or move-in dates, ask the question that reframes everything: "Is this gross, modified-gross, or triple-net?" In a full-service gross lease, the landlord pays operating expenses out of your rent. In a triple-net (NNN) lease, you pay base rent *plus* your pro-rata share of property taxes, insurance, and common area maintenance (CAM). A suite quoted at $24 per square foot NNN carrying $10 per square foot in operating expenses is really a $34 deal. Tenants get crushed here constantly because they line up base rents side by side and never add the pass-throughs that make one "cheaper" space cost more.

So demand the actual operating-expense load in writing: current CAM, tax, and insurance figures per square foot, plus a three-year history so you can see whether those costs are climbing or flat. A landlord who can produce clean, itemized reconciliations is a very different counterparty from one who waves you off with a "trust me, it's low." Next, ask "What's the load factor?" Rentable square footage bundles in your share of hallways, lobbies, elevator banks, and shared restrooms; usable square footage is only what you can actually fill with desks and equipment. A 15–20% load factor means you pay rent on roughly a fifth of the space you'll never occupy. Two suites that look identical on a tour can carry very different effective rents once the load factor is applied to each one.

Then lock down escalations before they lock you in. Fixed annual bumps of 2.5–3.5% are normal, budgetable, and fine. An uncapped CPI clause, by contrast, is a blank check the landlord fills in every year at renewal time. Negotiate a hard cap on controllable CAM increases — commonly 3–5% annually — so the owner can't pass a gold-plated lobby renovation through your operating statement. Ask for a base-year or expense-stop clause, which limits your share to expenses *above* a defined starting point and shields you from the landlord's deferred maintenance catching up all at once. Finally, ask "What concessions are on the table?" Free rent, a moving allowance, and a tenant-improvement allowance are all standard and all negotiable; a rough benchmark is about one month of free rent per year of term. Concessions are where the real price of a deal is decided, and they rarely appear in the headline rent.

Interrogate the buildout and who owns the mechanicals

The buildout and the building's mechanical bones decide two things: how much cash you burn on day one, and what surprise bills land on you in year three. Open with "What's the tenant-improvement (TI) allowance, and how is it paid?" Allowances commonly run $15–$50 per square foot for standard office space and climb to $30–$100+ per square foot for heavier or specialized buildouts. The payment mechanics matter as much as the headline figure. Some landlords reimburse only after the work is finished and fully documented, which forces you to front the entire construction cost and strains cash flow for months. Clarify whether the allowance is a lump sum, a reimbursement, or a turn-key deal where the landlord manages construction and simply hands you a finished space.

Then ask "Who controls the construction?" Landlord-managed buildouts frequently carry a 3–5% supervision fee plus markups layered onto subcontractor invoices, while a tenant-managed buildout lets you bid the work competitively and control cost directly. Either way, get the base-building condition on delivery defined in writing: the shell, the core systems, the roof, and the structure should be spelled out precisely, because anything left vague tends to migrate quietly out of the landlord's column and into your TI budget.

Now the single most expensive question in the entire lease: "Who pays for roof, HVAC, and structural replacement?" These are landlord capital expenses, not your repair line. Replacing a rooftop HVAC unit runs $15,000–$50,000, and a full roof replacement runs $5–$15 per square foot — numbers large enough to sink a small business if a lazy "tenant maintains all building systems" clause quietly assigns them to you. Cap your maintenance obligation at routine servicing and preventive upkeep, and explicitly exclude capital replacement of major systems.

Two more questions save real money at the margins. Ask "When does rent commence?" and tie the rent-start date to the certificate of occupancy plus a fixture period, not the day you sign — you should not pay rent while contractors are still framing walls and running conduit. And ask about the restoration obligation at term end. A clause forcing you to rip out every improvement and hand back a bare shell can cost six figures on the way out. Negotiate it away entirely, cap it at a fixed dollar amount, or specify exactly which improvements stay and which go so there's no argument years later when your leverage is gone.

Protect your ability to grow, shrink, and leave

A commercial lease is a multi-year commitment, and your ability to grow, contract, or walk away is worth nearly as much as the rent number itself. Businesses change faster than lease terms, so buy that optionality upfront while you still have negotiating leverage. Start with "Do I have a renewal option, and at what rate?" Lock the renewal in at a pre-set rate, or at fair-market value bounded by a floor and a ceiling. Never leave the renewal rate to the landlord's sole discretion, which effectively lets them price you out the moment you're rooted in the space and expensive to relocate.

Cover the upside: "Can I expand, and do I get a right of first refusal on adjacent space?" If you outgrow the suite in two years, a pre-negotiated expansion right or right of first refusal beats hunting for an entirely new location and moving again. Then cover the downside with "What are my sublease and assignment rights?" Some leases prohibit subleasing outright; better ones permit it with landlord consent that "shall not be unreasonably withheld." Watch specifically for a recapture clause that lets the landlord reclaim the space instead of approving your subtenant, and for language letting the landlord skim any profit on a sublease you arrange.

Ask "Is there an early-termination option?" A negotiated early-out — often available after 3–5 years with a penalty of roughly 2–6 months' rent — caps your downside if the business pivots, shrinks, or fails outright. In retail deals, watch for a go-dark clause that lets the landlord terminate if your business closes or stops operating for a defined period. Then ask "What personal guaranty is required, and does it burn off?" Push hard for a limited or burn-off guaranty that shrinks or expires after 12–36 months of on-time payments, rather than unlimited personal liability that can chase you long after the business is gone. Finally, ask for an SNDA (subordination, non-disturbance, and attornment agreement) and a quiet-enjoyment clause so you keep the space and your terms even if the landlord's lender forecloses on the building.

Hunt for the costs buried in the operating-expense clause

Beyond base rent and the obvious NNN line items, leases bury costly obligations inside the *definition* of operating expenses, and this is exactly where careful reading pays for itself many times over. Ask directly: "Are capital improvements, management fees, and administrative charges passed through to tenants, and is there a cap?" Many leases quietly permit landlords to push big-ticket items — roof replacements, HVAC overhauls, parking-lot resurfacing, structural repairs — into the annual operating statement, even though these are properly the owner's long-term capital responsibility, not a recurring cost you should fund.

Demand a written list of exclusions from CAM. Capital items, the landlord's own financing and interest costs, replacement reserves, leasing commissions, marketing, and the cost of filling other vacancies should never appear on your pass-through statement. A landlord who resists putting those exclusions in writing is telling you something worth hearing. Confirm exactly how your pro-rata share is calculated: is it your usable square footage divided by the building's total leasable area, and does that denominator shrink — raising your percentage — when the building sits partly vacant? A gross-up clause should normalize variable expenses to a fully-occupied building, so you're not overpaying to cover the landlord's lease-up costs during a slow year.

Insist on an audit right: the ability to inspect the landlord's books at least once a year to verify the CAM reconciliation. Reconciliation errors — occasionally convenient ones — are common, and a written audit right both deters padding and lets you claw back genuine overcharges after the fact. Pair the audit right with the CAM cap and the base-year clause from the cost section, and you've sealed the three biggest fine-print leaks in one pass: uncapped annual increases, improper capital pass-throughs, and an unauditable reconciliation you'd otherwise be expected to accept on faith. Also confirm smaller line items that add up quietly — after-hours HVAC charges, parking fees per stall, signage rights and their cost, and whether utilities are separately metered or allocated by a formula you never get to check.

Refuse to sign the landlord's first draft as written

The single most important mindset going in: the landlord's first draft is a wish list written entirely for the landlord, and nearly every clause in it is negotiable. Tenants who treat that opening document as take-it-or-leave-it leave enormous value on the table, because landlords budget for concessions and redlines and rarely walk over reasonable asks. A handful of defining mistakes account for most of the damage.

Comparing base rents instead of net effective rent. Always compute total cost across the full term — base rent plus every pass-through, minus concessions like free rent and TI — then divide by the term length and the usable square footage. Two deals with identical face rents can differ by dollars per foot once concessions and escalations are baked in over five or ten years.

Skipping the tenant-rep broker. A tenant-rep broker is typically paid out of the landlord's commission pool, so their guidance usually costs you little to nothing directly, and they bring current market comps, concession norms, and hard experience with which clauses to strike. Walking in without one generally means paying above-market rent while accepting below-market concessions, and never knowing the difference.

Skipping the real-estate attorney. A few thousand dollars in legal review routinely prevents six-figure mistakes over a lease term — an uncapped guaranty, a brutal restoration clause, or a maintenance obligation that quietly hands you the HVAC replacement bill. Trusting verbal promises is the companion error: if a concession or repair commitment isn't written into the executed document, it does not exist. Get every "don't worry, we'll take care of that" into the signed lease *before* you sign, because the moment ink hits paper your leverage drops to nearly zero and the document is the only thing that speaks.

Related questions

How much of a commercial lease is actually negotiable?

Essentially all of it. Base rent, escalations, TI allowance, free rent, CAM caps, guaranty terms, and renewal and termination rights are all standard negotiation points. The first draft favors the landlord entirely, so expect to redline heavily — landlords budget for concessions and rarely walk over reasonable tenant asks.

Should I hire a tenant-rep broker or negotiate directly?

Hire the broker. They're usually paid from the landlord's commission, so your direct cost is minimal, and they bring market comps, concession benchmarks, and clause experience you don't have. Negotiating directly without market data almost always leaves you paying more and receiving fewer concessions.

What's the difference between usable and rentable square footage?

Usable square footage is the space you actually occupy; rentable adds your share of common areas like lobbies, corridors, and shared restrooms. The gap between them is the load factor, typically 15–20%. You pay rent on rentable footage, so compare competing deals on effective cost per usable foot.

How long should my personal guaranty last?

Negotiate a limited or burn-off guaranty that shrinks or expires after 12–36 months of on-time payments, rather than a full-term unlimited guaranty. Unlimited personal liability on a multi-year lease can pursue you long after the business closes, so cap that exposure explicitly and in writing before you sign.

FAQ

What is the single most important question to ask about the lease term? Ask for the exact length of the initial term in months and the number and terms of any renewal options. Without clear renewal rights, you can be locked in with no flexibility, or lose your location entirely if the landlord declines to renew. Nail down term length and renewal mechanics before anything else.

How do I find out what my total monthly payment will really be? Ask for a full breakdown of base rent, CAM, property taxes, insurance, and every other pass-through. Landlords often quote a low base rent, then NNN charges add 30–50% or more on top. Get a written estimate of all charges, plus the three-year expense history, before you sign anything.

What happens if I need to make improvements to the space? Clarify who pays for tenant improvements and the size of the TI allowance — typically $15–$50 per square foot, higher for heavier buildouts. Confirm whether it's paid as a lump sum, a reimbursement, or turn-key, whether you can manage construction yourself, and who owns the improvements when the lease ends.

Can I sublease or assign the lease if my business changes? Ask whether subleasing and assignment are allowed and under what conditions. Some leases prohibit it; better ones require landlord consent that can't be unreasonably withheld. Watch for recapture clauses that let the landlord take the space back, and for the landlord claiming a share of any sublease profit you generate.

What are the penalties for breaking the lease early? Ask for the specific termination fee or buyout terms. It may be a fixed amount, a percentage of remaining rent, or an obligation to pay until the landlord re-leases the space. A negotiated early-out after 3–5 years often costs 2–6 months' rent. Get the exact formula in writing.

How are operating expenses and CAM charges calculated and capped? Request a clear explanation of how CAM is allocated across tenants, a written list of exclusions, and whether there's a cap on annual increases. Many leases allow uncapped pass-throughs that spike your costs. Push for a 3–5% annual cap on controllable expenses plus an audit right to verify reconciliations.

Sources

• https://www.cbre.com/insights
• https://www.jll.com/en-us/insights
• https://www.cushmanwakefield.com/en/united-states/insights
• https://www.naiop.org/research-and-publications/
• https://www.boma.org/
• https://www.irem.org/
• https://www.sba.gov/business-guide/manage-your-business/buy-lease-commercial-space
• https://www.nar.realtor/commercial

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