Two units. Same size. One quoted at $18 per square foot, the other at $26. Most business owners assume the first is the better deal, sign it, and then spend the next five years wondering why occupancy costs so much more than they budgeted.
The difference is lease structure, and it is the single most common place first-time commercial tenants in Waterloo Region get caught out. Here is how the three main types work, with the arithmetic that actually matters.
The Three Lease Types
Triple Net (NNN)
You pay base rent plus your proportionate share of three additional costs: property taxes, building insurance, and common area maintenance. Together these are called additional rent, or TMI (taxes, maintenance, insurance).
In Waterloo Region, additional rent commonly runs $6 to $14 per square foot on industrial and $8 to $16 on retail. It is quoted separately from base rent, and it moves year to year.
Triple net is standard for retail plazas, industrial buildings, and standalone properties.
Modified Gross
You pay base rent plus some operating costs, with the split negotiated deal by deal. A common structure has the landlord covering taxes and insurance while you cover utilities and in-suite maintenance.
There is no standard definition of modified gross. That is precisely why the specific split has to be written into the lease rather than assumed. Most common in office and mixed-use buildings.
Full-Service Gross
One all-in rent. The landlord pays property taxes, insurance, maintenance, and usually utilities and janitorial out of what you pay them. Most common in multi-tenant office buildings.
The advantage is budget certainty. The trade-off is that landlords price a risk buffer into the rate, and many full-service leases still allow costs above a base year to be passed through to you anyway.
The Arithmetic That Catches People Out
Take that 2,000 square foot retail unit quoted at $18 per square foot triple net, where additional rent is $9.
- Base rent: 2,000 × $18 = $36,000
- Additional rent: 2,000 × $9 = $18,000
- Total annual cost: $54,000
Now the same unit quoted at $26 per square foot full-service gross:
- All-in rent: 2,000 × $26 = $52,000
- Total annual cost: $52,000
The “expensive” space is $2,000 a year cheaper. Over a five-year term that is $10,000, and it went unnoticed because one number looked bigger than the other.
The rule: never compare quoted rates across different lease structures. Ask for the additional rent figure every time, and compare total annual occupancy cost.
Ask for the History, Not Just the Number
Additional rent is an estimate that gets reconciled against actual costs. A landlord quoting $9 per square foot on a plaza where it was $7 two years ago is telling you something about the trajectory, whether or not they intend to.
Request two years of additional rent history before you sign anything. Where you can, negotiate a cap on annual increases in controllable operating costs — the items the landlord has genuine discretion over, excluding taxes and insurance, which they do not control.
Retail additional rent runs higher than other classes for a structural reason: plazas carry more shared infrastructure per square foot of leasable area — parking lots to repave, snow to clear, landscaping, lighting, security — and commercial property tax rates on retail are high. Eight to sixteen dollars is normal, not exceptional.
Which Structure Is Better for You?
Neither is inherently better. They allocate risk differently.
| Triple net | Full-service gross | |
|---|---|---|
| Cost predictability | Lower — costs fluctuate | Higher — fixed, mostly |
| Who carries cost risk | Tenant | Landlord (priced in) |
| Transparency | High — you see the components | Low — bundled |
| Typical use | Retail, industrial, standalone | Multi-tenant office |
If your business needs budget certainty above all — a young business, tight margins, a nervous lender — gross structures are easier to plan around. If you would rather see exactly what you are paying for and have some ability to challenge it, triple net gives you that visibility.
What I Push On
Rent structure is where most tenants focus. It is rarely where the most value sits.
Most Waterloo Region landlords will agree to around two months of free rent without much argument. It is close to standard, and tenants who stop there often feel they have negotiated well. The gains I have actually won for clients have come from the two things landlords resist harder: improvement allowance and base rate. Landlords protect the headline rate because it is what their lender and any future buyer sees, which is exactly why pushing there is worth the effort.
I have consistently been able to extend free rent to two or three months rather than the one or two landlords open with. But the larger savings usually come from things tenants never think to raise at all — extra storage space, the number of parking spots included, and signage access. Those three get forgotten during negotiation and then reappear as extra charges once you are in the building.
On term: take a length you are genuinely comfortable committing to, then add renewal options. Options cost you nothing up front and they are the only leverage you have when the lease ends.
Before You Sign
Ontario commercial leases carry none of the protections that residential tenancies do. The Residential Tenancies Act does not apply, and the document you sign governs almost entirely. Have a lawyer review it — a commercial lease review typically costs a fraction of one month’s rent and routinely catches restoration obligations, guarantee terms, and demolition clauses that would cost far more later.
Watch specifically for: the personal guarantee and whether it can be limited or burned off after two or three years; assignment and subletting rights, which determine whether you can ever sell the business; restoration obligations at the end of term; and the escalation schedule.
Common Questions
What is a triple net lease?
A lease where the tenant pays base rent plus their proportionate share of property taxes, building insurance and common area maintenance. Those extras are called additional rent or TMI and commonly run $6 to $16 per square foot in Waterloo Region depending on asset class.
Is a gross lease more expensive than triple net?
Not necessarily — the quoted rate is higher because it bundles costs that triple net charges separately. A $26 gross rate can cost less in total than an $18 triple net rate with $9 additional rent. Always compare total annual occupancy cost rather than headline rates.
Can additional rent go up during my lease?
Yes. It is an estimate reconciled against actual costs, and it moves with taxes, insurance and maintenance. You can often negotiate a cap on annual increases in controllable operating costs, though landlords will reasonably resist capping taxes and insurance, which they do not control.
How long is a typical commercial lease in Waterloo Region?
Five years is most common, usually with a five-year renewal option. Smaller retail and office units are sometimes available on three-year terms. Longer terms give you more leverage on free rent and improvement allowance, because the landlord amortises those costs across more years.
Get Someone on Your Side of the Table
The agent whose sign is on the building works for the landlord. In most listed commercial leases the landlord pays a commission split between both agents, so tenant representation costs you nothing directly — and if you go unrepresented, that commission generally just stays with the listing side.
More on how this works in the tenant representation guide, or see the commercial leasing overview for the full process.
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