×
Icon
Legal AI
Assistant

Select Your Province

Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Hamilton Legal Guides » Real Estate, Housing & Civil Disputes Hamilton » Commercial Real Estate & Zoning Hamilton » Can You Sublet Your Commercial Office Space Without the Landlord’s Consent in Hamilton?

Can You Sublet Your Commercial Office Space Without the Landlord’s Consent in Hamilton?

2 Jun 2026 4 min read No comments Commercial Real Estate & Zoning Hamilton
💼

In Hamilton, you generally cannot sublet a commercial office space without your landlord’s written consent. The Ontario Commercial Tenancies Act and most standard leases contain strict “Assignment and Subletting” clauses, meaning an unauthorized sublease can lead to immediate eviction and financial penalties.

Business needs can change rapidly. Perhaps your company has downsized, shifted to remote work, or expanded so quickly that your current Hamilton office is no longer suitable. When you have years left on a commercial lease, finding another business to take over the space seems like the perfect solution.

However, commercial real estate works very differently from residential rentals. You cannot simply hand the keys to another business owner. Commercial leases are complex, binding contracts that heavily protect the property owner. Navigating the subletting process requires understanding your lease terms and working professionally with your landlord.

Step-by-Step Process for Subletting in Hamilton, Ontario

Before you list your office space on the market, you must follow a strict legal procedure. Failing to do so can result in the landlord terminating your lease entirely and suing you for damages.

Step 1: Review the Assignment and Subletting Clause

Grab your original lease agreement and locate the section titled “Assignment and Subletting.” This clause outlines exactly what you are allowed to do. It will detail the process for requesting permission and list any conditions the landlord can impose.

Step 2: Submit a Formal Request for Consent

You must present a formal, written request to your landlord. This cannot be a casual email. You need to provide the complete details of your proposed subtenant, including their business name, financial statements, and intended use of the space. The landlord needs proof that the new business is financially stable and will not damage the building.

Step 3: Negotiate the Sublease Agreement

If the landlord grants consent, your commercial real estate lawyer will draft a Sublease Agreement. This contract is between you (the sublandlord) and the new business (the subtenant). It is crucial to remember that your original lease with the main landlord remains fully active.

Assignment vs. Subletting in Commercial Real Estate

People often use these terms interchangeably, but they mean very different things under Ontario law.

FeatureSubletting (Sublease)Assignment
Who Occupies the Space?The subtenant occupies a portion of the space, or the whole space for a portion of the lease term.The new tenant takes over the entire space for the remainder of the lease term.
Who Pays the Landlord?The subtenant pays you, and you continue paying the main landlord.The new tenant usually pays rent directly to the main landlord.
Who is Legally Liable?You are 100% liable. If the subtenant stops paying, you must still pay the landlord.You remain as a guarantor, but the new tenant holds the primary legal responsibility.

How Much Does it Cost in Hamilton?

Subletting a commercial space involves legal and administrative expenses, which the current tenant is usually expected to cover.

  • Landlord’s Review Fee: Most commercial leases state that you must pay the landlord’s administrative and legal costs for reviewing your sublet request. In Hamilton, this typically ranges from $500 to $2,500 CAD.
  • Your Lawyer Fees: Hiring your own commercial real estate lawyer to draft the Sublease Agreement will generally cost between $1,500 and $3,500 CAD.
  • Real Estate Broker Fees: If you use a commercial agent to find a subtenant, you will likely pay a commission, often calculated as a percentage of the total rent for the sublease term.

How Long Does the Process Take?

Finding a suitable subtenant can take months, but once you have a candidate, the legal process moves moderately fast. Under most standard leases in Ontario, a landlord has 15 to 30 days to review your formal request and provide a response. If they ask for more financial documents from the subtenant, the clock may pause, so it is best to provide a complete package upfront.

Frequently Asked Questions (FAQ)

Can a landlord unreasonably refuse my sublet request?

Generally, no. Under the Commercial Tenancies Act, a landlord cannot unreasonably withhold consent unless the lease explicitly gives them absolute discretion. They must have a valid business reason, such as the subtenant having poor credit or planning to open a competing business in the same plaza.

What happens if the subtenant trashes the office?

You are ultimately responsible. Because your original lease with the landlord remains intact, the landlord will pursue you for the repair costs. You would then have to sue the subtenant in court to recover your money.

Can I charge the subtenant more rent than I pay?

Many commercial leases contain a profit-sharing clause. This means if you manage to sublet the space for a higher rate than your base rent, you must split the profit with the landlord, or sometimes give the entire profit to the landlord.

Does the Landlord and Tenant Board (LTB) handle commercial sublets?

No. The LTB only handles residential matters. Commercial lease disputes in Hamilton must be resolved through private arbitration or by filing a civil lawsuit at the Superior Court of Justice.

lawyerinfo.ca

⚖️ Lawyers to Help You in Hamilton

⭐ Get Featured

🏛️ Relevant Courts & Agencies in Hamilton

Share:

Leave a Reply

Your email address will not be published. Required fields are marked *