Ontario Lease Clauses That Hold Up at the Landlord and Tenant Board

Updated: April 2026

By Françoise Pollard, Realtor®, and Keith Goldson, Broker, Keith & Françoise Real Estate Team, eXp Realty Brokerage. We help tenants, landlords, and corporate relocators with leasing in Ontario across the GTA and Niagara Region, including Mississauga, Brampton, Milton, Burlington, Oakville, Hamilton, Etobicoke, Toronto, St. Catharines, Niagara Falls, Welland, and Thorold.

Ontario lease clauses are not all created equal. Some hold up at the Landlord and Tenant Board. Some fail completely. Others fall into a grey area where the outcome depends on how the landlord wrote the clause and what the circumstances are at the time of the hearing. Knowing which category a clause falls into before you sign determines whether your lease protects you or creates problems you didn’t see coming.

We review leases regularly across the GTA and Niagara Region for both landlords and tenants. The same mistakes appear repeatedly: vague utility terms that collapse into a dispute over a $300 hydro bill, maintenance clauses that the LTB won’t touch, and “standard” language borrowed from outdated agreements that contradicts the Residential Tenancies Act. This article covers what works, what fails, and what you need to decide before you sign.

How Additional Terms Work in the Ontario Standard Lease

Since April 30, 2018, most private residential landlords in Ontario must use the Ontario Standard Form of Lease. The standard lease includes a section for additional terms where landlords can add clauses beyond the default requirements. Those clauses are not automatically enforceable just because both parties signed them.

The LTB applies one test to every additional term: is it consistent with the Residential Tenancies Act? If the clause conflicts with the Act, it carries no legal weight. The rest of the lease stays intact, but that clause disappears entirely at a hearing. Landlords often discover this at the worst possible moment, when they’re trying to enforce something they believed was airtight.

The legal foundation: Section 4 of the RTA

Section 4 of the Residential Tenancies Act states that any provision inconsistent with the Act is void. Section 15 governs additional terms and confirms the same principle. A clause must be clear, specific, and legally permissible. Broad, vague, or rights-removing language fails at every one of those tests. For a full breakdown of which specific clauses the LTB will never enforce, see our article on illegal lease clauses in Ontario.

What Should You Include in Your Ontario Lease?

Most landlords think about what they want to restrict. The more useful question is what the lease actually needs to include, what it’s smart to add even when not required, and what to leave out entirely.

Must include

Beyond the standard lease fields, every Ontario lease should specify the exact utility split. State which utilities the tenant pays for and which the landlord covers, and name each one explicitly: hydro, gas, water, hot water tank rental. Vague references to “utilities” produce disputes. The lease should also identify parking by unit or spot number, state the key deposit amount if applicable, and document any rent discount clearly in the discount section of the standard form.

Optional but smart

Smoking restrictions, BBQ rules tied to fire code or the condo declaration, and lawn care responsibilities for houses with yards are all worth including when they apply. A clause requiring the tenant to notify the landlord promptly of maintenance issues is reasonable and enforceable. For condos, incorporating the corporation’s declaration and by-laws by reference is both smart and legally sound. Specifying a preferred method of rent payment is also practical, though landlords cannot make post-dated cheques mandatory.

Avoid completely

Damage deposits, no-pet clauses, guest restrictions, late payment fees, early termination penalties, and any clause that shifts mandatory maintenance obligations to the tenant. These fail at the LTB without exception. Including them wastes space, creates false expectations, and costs credibility at a hearing when the LTB member sees a lease built on unenforceable language. If you’re unsure whether a clause crosses the line, the detailed breakdown is in our article on illegal lease clauses in Ontario.

What Ontario Lease Clauses Actually Hold Up at the LTB?

Clauses that hold up share common traits: they’re specific, they don’t remove RTA rights, and they reflect a reasonable expectation given the property type. The following categories have consistent enforcement records at the LTB.

Utility clauses

Clauses that assign responsibility for specific utilities to the tenant work when they’re explicit. “Tenant is responsible for hydro as billed directly by Toronto Hydro” holds up. “Tenant pays utilities” does not, because it’s vague and open to dispute. If the tenant doesn’t control a utility, such as gas heat where the furnace is landlord-managed, the landlord cannot assign that cost to the tenant. The LTB evaluates whether the allocation matches actual access and control.

Smoking restrictions

A clause prohibiting smoking inside the unit, on the balcony, or in common areas is enforceable. The LTB consistently supports smoking bans when they appear in the lease before the tenancy begins. Specify exactly which areas the ban covers. “No smoking” without a defined scope leaves room for argument. “No smoking inside the unit, on the balcony, or within 9 metres of any entrance” is specific enough to enforce.

Parking assignment

Clauses that assign a parking spot by number and state any applicable fee are enforceable. The LTB will honor a clear parking assignment that forms part of the original tenancy agreement. The clause cannot be used as a penalty mechanism. A landlord who threatens to revoke parking access mid-tenancy because of an unrelated dispute will not find support at the Board.

Key replacement costs

A clause charging the tenant for lost keys is enforceable when the fee reflects actual replacement cost, typically $10 to $30 per key. A clause charging $150 per key fails because it doesn’t correspond to the real cost. The key deposit itself must not exceed the actual replacement cost of the key under the RTA. Any amount beyond that crosses into illegal deposit territory.

Increased entry notice

The RTA sets a minimum of 24 hours’ written notice before entry. A clause requiring 48 hours’ notice is enforceable because it gives the tenant more protection than the law requires. You can increase the minimum. You cannot reduce it. A clause saying “12 hours’ notice is sufficient” has no effect at the LTB.

Lawn and yard maintenance

For houses where the tenant has exclusive use of the yard, a clause assigning lawn mowing and basic garden maintenance to the tenant can be enforceable. The clause must match the property type and the tenant’s actual access. A tenant renting a basement unit with no yard access cannot be held responsible for the property’s outdoor maintenance. When the obligation fits the tenancy, the LTB generally supports it.

Which Ontario Lease Clauses Fall Into a Grey Area?

Some clauses are neither clearly enforceable nor clearly prohibited. For these, the LTB’s decision depends on how the landlord drafted the clause, whether it reads as reasonable in context, and the specific facts of the dispute.

Tenant insurance requirements

A clause requiring liability insurance has stronger footing than one requiring contents insurance, because the RTA gives landlords no authority to mandate content coverage. Liability coverage protects the property and other tenants, which gives the clause a more defensible rationale. Even so, enforcement at the LTB is inconsistent. If you include this clause, state the reason clearly and keep the requirement proportionate.

Air conditioning

Charging separately for air conditioning is enforceable if AC is not a standard feature of the unit and the arrangement was clear at the start of the tenancy. Attempting to add an AC charge mid-tenancy, or charging for AC service when the unit already had AC installed, fails. The LTB treats AC as a standard feature once it’s present in the unit.

BBQ restrictions

A BBQ ban in a condo where the declaration or fire code prohibits it is enforceable when the lease references that source directly. A blanket BBQ ban in a house with a private yard is much harder to defend. Tie the restriction to a specific rule or safety reason. “No BBQs on the balcony per the condominium corporation’s fire code policy” holds up. “No BBQs” with no explanation does not.

Subletting consent requirements

A clause requiring the landlord’s written consent before subletting is enforceable and standard. A clause prohibiting subletting entirely is not. The RTA gives tenants the right to sublet with landlord consent, and consent cannot be withheld arbitrarily. The lease can make the process clear. It cannot eliminate the right.

What Happens If Your Ontario Lease Clauses Don’t Hold Up?

This is the section most landlords skip, and it’s where the real cost lives.

The clause is simply ignored

At a hearing, the LTB member will not enforce a clause that conflicts with the RTA. If a landlord built their entire application around that clause, the member sets it aside entirely. At that point, the landlord has no basis for the position they took and no time to build a new one.

The application fails

A landlord who files an L2 application to evict a tenant based on a lease clause violation, where that clause is void under the Act, will have the application dismissed. Both the filing fee and preparation time are gone. Hearing dates at the LTB occupy months of waiting under current timelines, and none of that is recoverable. Discovering a clause doesn’t work this way is one of the more expensive lessons in landlord-tenant law.

The eviction timeline extends

LTB hearings for most application types currently schedule five to seven months out from the filing date. A landlord who files based on an unenforceable clause, has the application dismissed, and then re-files correctly has effectively added most of a year to the resolution timeline. That delay has a direct financial cost in unpaid rent, ongoing maintenance obligations, and lost opportunity.

Credibility damage affects the whole case

A lease filled with void clauses tells the LTB member something about how the landlord approaches the tenancy. Landlords who arrive at hearings relying on unenforceable language lose credibility on the legitimate parts of their application too. The member’s assessment of good faith matters in close cases, and a lease built on clauses the Act explicitly voids is not a strong start.

How Do You Write Ontario Lease Clauses That Hold Up?

Four principles separate enforceable clauses from ones that collapse under scrutiny.

Step 1: Start with RTA compliance

Before writing any additional term, ask whether it conflicts with the Act. If a clause removes a right the RTA gives tenants, restricts something the Act explicitly protects, or imposes a fee the Act prohibits, remove it. There is no version of an illegal clause that the LTB will enforce, regardless of how it’s worded. Start from compliance, not from what you wish the law permitted.

Step 2: Avoid removing rights

The RTA sets a floor. Additional terms can build above that floor by adding specificity, assigning responsibilities, or clarifying arrangements. They cannot go below it. A clause that reduces tenant rights in any area the Act covers is void. Focus the additional terms section on things the Act doesn’t already address, such as parking assignments, utility splits, smoking restrictions, and property-specific maintenance arrangements.

Step 3: Keep wording specific and measurable

Vague clauses fail because the LTB cannot enforce something ambiguous. “Tenant must keep the unit clean” means nothing at a hearing. “Tenant is responsible for weekly garbage removal to the municipal collection point at the end of the driveway” is specific and measurable. Write every clause with one question in mind: if this ends up in a dispute, can a member read this clause and know exactly what obligation it created?

Step 4: Test for enforceability before signing

Before adding any clause to the additional terms section, test it against three questions. Does it conflict with the RTA? Does it remove a tenant right? Is it specific enough to enforce? If the answer to the first two is no and the answer to the third is yes, the clause will likely hold up. If it fails any one of those tests, rewrite it or remove it. A shorter lease with enforceable terms is more valuable than a longer one full of clauses the LTB will strike down in a dispute.

Condo-Specific Ontario Lease Clauses

Condo rentals involve an additional layer of rules. The condominium corporation’s declaration and by-laws apply to everyone in the building, including tenants. Landlords can incorporate those requirements directly into the lease, and the LTB supports this approach because the obligation comes from the Condominium Act, not the landlord’s preference.

Referencing the declaration

Include a clause stating that the tenant agrees to comply with all condominium declaration provisions and by-laws. This converts condo rule violations into lease violations the landlord can act on. Keep a copy of the current declaration and rules on file so you can produce them at a hearing if needed. Rules that aren’t documented create enforcement problems regardless of what the lease says.

Parking and locker assignment

Identify the parking space and locker by their registered unit or level number. State any monthly parking fee separately. Specify what happens if the tenant uses the wrong space or loses a parking pass. Condo parking assignments are frequently the subject of disputes. Specific language prevents most of them.

Noise and common area conduct

A clause requiring the tenant not to cause noise that disturbs other residents between 10 p.m. and 7 a.m. is enforceable. Tie the clause to the condo corporation’s quiet hours if the declaration specifies them. A clause requiring the tenant not to obstruct hallways, stairwells, or lobby areas reflects the landlord’s legal obligation and aligns with condo requirements. Both hold up at the LTB consistently.

Utility responsibility in condos

Condo utility structures vary. Some buildings bill hydro directly to unit owners; others include it in maintenance fees. Clarify exactly which utilities the condo covers through maintenance fees and which the tenant pays separately. Mismatch between the lease and the actual billing structure produces disputes at the end of every tenancy. Get this right at the start. For more on how condo tenancies work in Ontario, see our guide on renting a condo in Ontario.

Ontario landlord and tenant law can change. This article reflects legislation and procedures as of the date noted and is for general informational purposes only. Confirm current rules and obligations with a qualified legal professional before making decisions.