Insights · Lease
How to Negotiate a Commercial Lease in Ontario.
Commercial lease negotiation in Ontario is not like buying a house. There is no standard form, no mandated disclosure, and the landlord's lawyer has drafted the document to protect the landlord. This guide covers what tenants need to know before signing.
The Terms That Matter Most
Base Rent Is the
Starting Point, Not the Number.
Net rent is what most tenants focus on — but the total occupancy cost is what actually matters. TMI (taxes, maintenance, insurance) adds $8–$16 per SF annually to most Ontario commercial leases. For an industrial building at $20 net, a tenant paying $10 TMI is actually spending $30 per SF. Comparing net rents across buildings without normalising TMI is a common error.
Key lease terms beyond rent: term length, renewal options and notice periods; landlord and tenant work; fixturing period; demolition clause; personal guarantee requirements; subletting rights; and any exclusivity or co-tenancy provisions in retail leases.
What Landlords Push For
Personal Guarantees,
Rent Steps, and No-Exit Clauses.
Landlords in Ontario typically push for personal guarantees on corporate tenants — meaning principals are personally liable if the company defaults. The scope of this guarantee (all years vs. a capped amount) is negotiable. Never sign an unlimited personal guarantee on a commercial lease without understanding the full exposure.
Rent escalations (often CPI or fixed steps of 2–3% annually) are standard. The compounding effect over a 5–10 year term is significant — a 3% annual escalation on $25 net rent results in $29.90 by year 6. Model the full-term cost, not just the starting rent.
How to Negotiate Effectively
Leverage, Alternatives,
and Representation.
Tenant leverage comes from having alternatives. A tenant willing to walk away to a competing space has leverage; a tenant who has told the landlord this is their only option does not. Never reveal your timeline pressure or your fallback position during negotiation.
Tenant representation by an experienced commercial broker costs the tenant nothing in most Ontario leasing situations — the landlord pays the commission. A competent tenant rep knows what the landlord has accepted from other tenants, what the market supports, and how to structure an offer that gets accepted on terms that protect the tenant.