Commercial lease commissions in Canada typically run between 3% and 6% of the total base rent over the full lease term, and in Ontario that figure gets topped with 13% HST. For a modest 3,000‑square‑foot office with a five‑year term, the commission alone can land around $18,645 after tax — a cost that most tenants never see on their own bank statement because the landlord pays it. Understanding who pays, how the fee is calculated, and what you can negotiate matters whether you are a tenant signing your first commercial lease or a landlord listing a property.
Disclosure: Some links on this page are affiliate links. If you make a purchase through them, Britwealth may earn a commission at no extra cost to you. We only include products and services that are relevant to the topic.
This article is general information only and does not constitute professional advice. For your specific situation, consult a qualified professional.
Unlike residential deals where the fee structure is fairly predictable, commercial commissions are shaped by property type, deal complexity, and local market conditions. A retail lease in Toronto may follow a different model than an industrial lease in Calgary. The same deal can be quoted as a percentage of total lease value, a flat per‑square‑foot rate, or a fixed fee. Landlords, tenants, and their brokers each have a stake in how that number is set, and the real cost is rarely the first figure you hear.
Here’s what you actually need to know.
If you are new to commercial leasing, the term lease commission will come up early. A lease commission is the fee paid to a licensed real estate broker for finding a tenant, negotiating the lease, and closing the deal. It is separate from the rent and from other costs like TMI or operating expenses. The commission is paid when the lease is signed, and the amount is agreed between the landlord and their broker before the property is listed.
What I tend to notice is that many tenants assume the broker’s fee is their problem to solve. It usually isn’t, but you still need to know the numbers so you can compare offers and catch any hidden costs.
The headline commission rate is only part of the picture. The calculation model, the lease term, the renewal clause, and the HST all change the final figure. A tenant who focuses only on the percentage rate can miss that the same deal expressed as a per‑square‑foot fee works out differently over a five‑year term versus a ten‑year term.
→ Scroll right to see all columns
| Commission Model | How It Works | Best Suited For |
|---|---|---|
| % of Total Lease Value | 3% – 6% applied to total base rent over the full lease term | Medium to large leases where the total value is clear |
| Per Square Foot | $1 – $3 per sq ft per year, multiplied by the lease term | Retail and industrial spaces where sq ft is the primary metric |
| Flat Fee | Fixed dollar amount regardless of lease value or term | Short-term leases, renewals, or simple deals |
A real‑world example makes the numbers concrete. Take a 3,000‑square‑foot office space at $22 per square foot per year on a five‑year lease. The total base rent over the term is $330,000. At a 5% commission rate, the fee comes to $16,500. Add 13% HST in Ontario — $2,145 — and the total commission is $18,645. The landlord pays that amount, and it is split between the listing broker and the tenant’s representative. The tenant never writes that cheque, but the cost is baked into the landlord’s bottom line, which can affect the rent they are willing to accept.
Commercial leasing timelines run 3 to 12 months, much longer than the 30‑ to 90‑day residential cycle. That longer window means more broker time and more opportunity for the commission structure to be renegotiated if the deal changes. For landlords, the commission is a business expense and is tax deductible — one reason variable lease rates and variable commission models often go hand in hand.
Where Tenants and Landlords Misunderstand Commercial Lease Commissions
Assuming the tenant always pays nothing
Most tenants do not pay their broker directly, but that is not guaranteed. If you engage a tenant representative without a clear agreement, or if you pursue an off‑market property that the landlord has not listed, your broker may expect you to cover their fee. The research shows that in some buyer‑initiated or off‑market deals, the buyer pays their own broker directly — either a flat fee or a percentage. Always clarify who pays your broker before you sign a representation agreement. A simple question upfront saves a surprise bill later.
Treating the commission rate as non‑negotiable
Commercial commissions are less standardized than residential fees. The same property can be listed with a 4% commission or a 6% commission depending on the broker, the services included, and the landlord’s willingness to negotiate. Many landlords and tenants assume the rate is fixed because that is how residential works. In commercial real estate, the commission rate is itself a term to negotiate. Getting fee agreements in writing before the property is shown or the lease is drafted is the only way to lock in the number.
Ignoring renewal commission terms
When a tenant renews a lease, the broker who originally handled the deal may still be owed a commission — typically around 50% of the initial fee. That renewal commission is often negotiated separately and can be missed until the renewal documents arrive. Landlords who do not discuss renewal commission terms upfront may face an unexpected cost at renewal time. Tenants who understand the renewal commission can factor it into their renewal rent negotiations. Ask about renewal commission terms when the original lease is signed, not when renewal is on the table.
Overlooking the HST impact
A 13% HST addition on a commission can change the total cost by thousands of dollars. In the office example above, the HST alone added $2,145. Landlords who budget only the base commission may find themselves short when the invoice arrives. Tenants who are reimbursing the landlord for commission costs in a gross lease need to include HST in their calculation. Managing leasehold capital expenditures alongside commission costs requires the same kind of detailed line‑item planning.
How Commercial Lease Commissions Actually Work: Process, Models, and Negotiation
Engaging a broker and signing a representation agreement
Before any property is viewed, the broker and the client (landlord or tenant) sign a representation agreement. This document spells out the commission structure, the payment terms, and who is responsible for paying. For a tenant, the agreement should state clearly that the landlord will pay the commission or that the tenant will pay if the landlord does not. The agreement also covers exclusivity, cancellation terms, and the duration of the representation. Do not skip the fine print — a poorly written agreement can leave you paying a commission twice on the same property.
Commission calculation and the listing agreement
When a landlord lists a commercial property, the listing agreement sets the commission rate and the split between the listing broker and any cooperating broker who brings a tenant. The rate can be expressed as a percentage of total lease value, a per‑square‑foot figure, or a flat fee. The listing agreement also covers whether the commission applies to the base rent only or to additional rent items like TMI. Once the listing is live, any tenant broker who shows the property is working within that commission structure. The landlord knows the total cost from day one, and that cost is factored into the asking rent.
Negotiating the commission when the deal changes
Commercial leases evolve. The tenant may request a shorter term, a larger space, or a different rent structure. Any of those changes can affect the commission. If the deal shifts significantly, the broker may need to renegotiate the commission with the landlord. Tenants should understand that asking for a rent‑free period or a tenant improvement allowance does not change the commission base unless the lease value changes. The commission is calculated on the total base rent over the term, so a rent‑free period reduces the commission base. Clarify how changes affect the commission before you sign the lease.
Renewal commissions and future‑phase considerations
When a tenant renews, the original broker may still be entitled to a commission — usually 50% of the initial fee. This is negotiated as part of the original listing agreement or the tenant representation agreement. Landlords should discuss renewal commission terms at the start, not at renewal. Tenants can use the renewal commission as a point of negotiation: if the landlord is paying a renewal commission, the tenant may have less room to negotiate rent reductions. Upcoming regulatory changes in Ontario and other provinces may affect how lease commissions are disclosed, so staying current with retail and commercial leasing practices is worth the effort.
If the landlord pays the commission, does the tenant pay anything at all? ▾
Can a tenant negotiate a lower commission rate? ▾
What happens if I find a space that is not listed on the open market? ▾
Is the commission the same for retail, office, and industrial leases? ▾
Do I pay HST on the commission if I am a tenant reimbursing the landlord? ▾
What happens to the commission if I break the lease early? ▾
Transparency in Commercial Lease Commissions Starts With the Right Questions
The commission on a commercial lease is not a fixed cost — it is a negotiated term that affects the landlord’s bottom line, the broker’s incentive, and the tenant’s negotiating room. The more you understand the models, the renewal terms, and the tax implications, the fewer surprises you will face when the lease documents arrive. Whether you are a tenant or a landlord, the best move is to put every fee agreement in writing, ask about renewal commissions before you sign, and always factor HST into your budget.
Remember: this article is general information only. For advice on your specific situation, speak to a qualified professional.
If this was useful, you might also want to read Tips for Navigating a Corporate Showroom Lease in Canada.
Sources and Further Reading
Understanding Common Area Maintenance Charges for Your Commercial Space — A deeper look at the operating costs that sit alongside rent and commission in a commercial lease.
Understanding Lease Structures for Your Canadian Business — A practical breakdown of gross, net, and modified gross leases and how each affects your total occupancy cost.
Battaglia Team (2024). Who Pays Commercial Real Estate Broker Fees?. 🔗
Real Estate Council of Ontario (RECO). Commercial real estate commission structures. 🔗
