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How Much Does It Cost to Draft a Commercial Lease Agreement in Ontario?

4 Jul 2026 4 min read No comments Money, Taxes & IP Canada
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In Ontario, hiring a law firm to negotiate and draft a standard Triple Net (NNN) commercial lease typically costs between $1,500 and $3,500 CAD. Whether you are opening a retail shop or an office, having a lawyer review the complex terms protects you from unexpected maintenance costs and unfair personal guarantees.

Signing a commercial lease is one of the biggest financial commitments a business owner will make. 🏢 Unlike residential leases, which are highly regulated to protect tenants, commercial real estate in Ontario is essentially the “Wild West.” Landlords and tenants have the freedom to negotiate almost any term they want. This means if you sign a bad contract, you could be entirely responsible for replacing a broken HVAC system or fixing a leaky roof.

Whether you are leasing a trendy retail space in Toronto, a large warehouse in Mississauga, or a quiet office in Ottawa, standard form leases heavily favour the landlord. A commercial lease agreement dictates your operating hours, insurance requirements, and what happens if your business fails. Relying on a boilerplate template is a massive risk, which is why hiring a local real estate lawyer to draft or negotiate the lease is essential for long-term success.

Step-by-Step Process for Drafting a Commercial Lease in Ontario

Getting a commercial lease finalized requires careful negotiation and clear communication. 📈 Here is the standard step-by-step process most Ontario business owners follow before handing over the keys.

Step 1: Sign the Offer to Lease (Letter of Intent)

Before the massive lease agreement is drafted, both parties usually sign an Offer to Lease or a Letter of Intent (LOI). This shorter document outlines the basic business terms, such as the base rent, the length of the lease, and any “fixturing period” (free rent time to renovate). Be extremely careful, as an Offer to Lease can sometimes be legally binding in Ontario if it contains all the essential elements of a contract.

Step 2: Determine the Type of Commercial Lease

Your lawyer will need to know what type of lease structure you agreed upon. 💰 The most common type in Ontario is a Triple Net (NNN) lease, where the tenant pays the base rent plus their share of property taxes, building insurance, and common area maintenance (CAM). Other options include a Gross Lease (where everything is included in one flat fee) or a Percentage Rent Lease (often used in retail, where the landlord takes a cut of your sales).

Step 3: Hire a Commercial Real Estate Lawyer

Once the basic terms are set, the landlord usually has their law firm draft the formal, 40-page lease agreement. If you are the tenant, you must hire your own lawyer to review this draft. Your lawyer will look for hidden traps, such as unfair termination clauses, excessive management fees, or overly broad “make good” clauses that force you to tear down your renovations when you leave.

Step 4: Negotiate the Personal Guarantee

Most commercial landlords require small business owners to sign a personal guarantee or indemnity. 🔒 This means if your incorporated business goes bankrupt, the landlord can sue you personally and seize your home to pay the remaining rent. Your lawyer will negotiate to limit this guarantee-for example, capping it to a maximum of 12 months’ rent rather than the entire five-year lease term.

Step 5: Finalize and Register the Lease

After both law firms finish negotiating the clauses, the final agreement is printed and signed by both parties. If your lease is longer than three years, your lawyer may recommend registering a “Notice of Lease” on the property’s title at the provincial land registry. This legally protects your right to stay in the building even if the landlord sells the property to a new owner.

How Much Does it Cost in Ontario?

The cost of legal fees for a commercial lease depends on the size of the space and the complexity of the negotiations. Here are the typical costs in Canadian dollars (CAD):

Service / Expense TypeEstimated Cost (CAD)Details
Basic Lease Review (Tenant)$1,000 – $2,000A lawyer reviews the landlord’s draft, provides a written summary of risks, and suggests changes.
Full Negotiation (Tenant or Landlord)$2,500 – $5,000+The lawyer actively negotiates with the opposing side to rewrite complex and unfair clauses.
Drafting a New Custom Lease (Landlord)$1,500 – $3,500Having a law firm create a strong, landlord-friendly NNN lease template for your specific building.
Registering Notice of Lease$300 – $600Legal and government land registry fees to put the lease on the property title.

How Long Does the Process Take?

Drafting and finalizing a commercial lease is not an overnight task. 🕐 From the moment you sign the Offer to Lease, you should expect the legal review and back-and-forth negotiations to take about 2 to 4 weeks. If the landlord is stubborn or the building requires extensive environmental testing and zoning checks, the process can easily drag on for 6 to 8 weeks before the final signatures are collected.

Frequently Asked Questions (FAQ)

Who pays for drafting the commercial lease?

Traditionally in Ontario, the landlord’s lawyer drafts the lease. However, many commercial leases include a clause stating that the tenant must reimburse the landlord for these legal drafting fees. You should negotiate this in your initial Offer to Lease.

Can I just use a cheap template from the internet?

It is highly discouraged. Generic templates rarely cover Ontario-specific environmental laws, zoning issues, or property tax apportionments properly. A poor lease can cost you tens of thousands of dollars in a dispute.

What is a “fixturing period” in a lease?

A fixturing period is a negotiated timeframe (e.g., 30 to 60 days) where the tenant gets the keys to the unit to complete renovations and set up their store, usually without paying base rent.

Can the landlord lock me out if I miss a rent payment?

Yes. Under the Ontario Commercial Tenancies Act, if rent is unpaid for 16 days, the landlord can legally change the locks without going to the Superior Court of Justice, unless your specific lease states otherwise.

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