Above-Guideline Rent Increases Ontario: Complete Landlord Guide (2026)

You replaced the roof for $60,000. The boiler gave out and cost another $40,000. Your property taxes jumped 18% in two years. And Ontario's rent increase guideline gives you 2.5%.

That gap — between what you've actually spent keeping an older building functional and what the guideline allows you to recover — is exactly why above-guideline rent increases (AGIs) exist. An AGI is a formal application to the Landlord and Tenant Board that can authorize a rent increase beyond the standard annual guideline, specifically for landlords who've made qualifying capital expenditures or absorbed extraordinary cost increases.

AGIs aren't quick, they aren't guaranteed, and they require organized documentation. But for landlords in London, St. Thomas, and Strathroy who own pre-1990 buildings, they can be the difference between a sustainable rental and one that's bleeding cash. Here's everything you need to know.

What Is the Ontario Rent Increase Guideline — and Why It Falls Short

Ontario sets a rent increase guideline each year, tied to the Ontario Consumer Price Index. In recent years it has ranged from 0% (2021) to 2.5% (2024), though it fluctuates — you can check the current rent increase guideline at Ontario.ca.

Landlords can apply the guideline increase to any rent-controlled tenancy with 90 days' written notice using an N1 form — no LTB approval needed. For context on how the standard guideline works, see our full guide to rent increases in Ontario.

The guideline applies to most private residential tenancies in buildings first occupied before November 15, 2018. Units occupied for the first time after that date are exempt from rent control entirely — for those properties, AGIs are irrelevant because there is no guideline ceiling.

For rent-controlled units, if you want to raise rent beyond the guideline, you need an AGI — and you need to apply to the LTB before you can collect it.

What Qualifies for an Above-Guideline Rent Increase in Ontario?

Under the Residential Tenancies Act, 2006, the LTB will consider an AGI application under three categories:

1. Extraordinary Increases in Municipal Taxes or Utilities

If your property taxes or utility costs have spiked dramatically — well beyond what the guideline is designed to absorb — you may qualify. You'll need to show hard documentation: tax assessment notices, utility bills, and a clear comparison to prior years. This category is less common but genuinely available.

2. Capital Expenditures (Most Common AGI Path)

A capital expenditure is a major improvement or replacement that extends the useful life of the building or a building system. Qualifying examples include:

• Roof replacement
• New boiler, furnace, or central HVAC system
• Major plumbing or electrical upgrades (building-wide, not unit-level repairs)
• Foundation repairs
• Building-wide window replacement
• Elevator upgrades or replacement
• New fire safety systems (sprinklers, alarm panels)

Critical distinction: Routine repairs and maintenance do not qualify — ever. Fixing a leaky pipe, repainting a hallway, replacing a broken appliance, or patching drywall are maintenance costs. The LTB scrutinizes the capital-versus-maintenance line aggressively, and this is where many AGI applications get reduced or partially denied.

If you're unsure whether a specific expense qualifies, review our guide to landlord maintenance responsibilities in Ontario for context on what the RTA defines as ordinary upkeep.

3. Operating Costs for Security Services

If you've added new security services to the property — a staffed security guard, a new electronic access system, or professional monitoring services that didn't previously exist — these costs can support an AGI application.

How to File an AGI: The L5 Application Step by Step

To apply for an above-guideline increase, you file an L5 application with the Landlord and Tenant Board.

Here's what the application requires:

1. A detailed list of all claimed capital expenditures or cost increases, specifying what the work was, when it was done, and what it cost
2. Invoices and contracts from licensed contractors for every claimed expense
3. Proof of payment — bank records, cancelled cheques, or receipts
4. Dates each expense was incurred (the LTB has look-back rules on how far back expenses can go)
5. Number of residential units in the building (costs are allocated proportionally across all units)
6. Current rent amounts for the affected units

After you file, the LTB schedules a hearing. Every affected tenant receives notice and has the right to participate, cross-examine your evidence, and present their own. The current filing fee is $201 per building.

One practical note: if your building has many units, consider whether organizing all of this documentation yourself is realistic — or whether working with a licensed paralegal or experienced property manager in London, Ontario makes more sense.

How the LTB Calculates the Approved Increase

The LTB doesn't simply let you pass your full capital costs to tenants. The calculation involves several steps:

1. Total allowable capital expenditure is determined (they may disallow certain items or reduce amounts)
2. The allowable amount is divided across all units in the building proportionally
3. Each unit's share is amortized over the useful life of the improvement — typically:
   • Roof replacement: 15–20 years
   • Boiler/furnace: 10–15 years
   • Windows: 15–20 years
   • Electrical systems: 15–25 years
4. The annualized amount is expressed as a percentage of current rent for that unit
5. That percentage is added on top of the regular guideline increase for the approved period

Worked example: A $90,000 roof replacement on a 12-unit building, amortized over 15 years, works out to roughly $500/unit/year — or about $42/month per unit. If average rent is $1,400, that's approximately a 3% above-guideline increase, applied annually for 15 years.

The final approved amount will vary depending on your specific circumstances, the LTB adjudicator, and any successful tenant challenges.

What Tenants Can Do at an AGI Hearing

Tenants have meaningful procedural rights and many use them. At the hearing, tenants can:

• Attend and cross-examine your evidence
• Challenge whether an expense was capital vs. deferred maintenance
• Argue that the work was only necessary because the landlord neglected ordinary upkeep (this is the most damaging argument — and the LTB takes it seriously)
• Present evidence of incomplete or poor-quality work
• Raise procedural issues if they weren't properly notified

The "deferred maintenance" argument deserves special attention. If a tenant can show that your $60,000 roof replacement was necessary partly because you hadn't maintained the roof for 20 years, the LTB may reduce the qualifying amount substantially. This is why ongoing maintenance documentation matters — not just for AGI purposes, but as baseline protection. Our landlord record-keeping guide covers what to track and how.

Come to the hearing with organized, tabbed documentation: original invoices, signed contractor agreements, proof of payment for each item, before-and-after photos, and a clear written summary of the work.

AGI Timeline: Expect 12–18 Months from Filing to Order

AGI applications are not fast. With current LTB backlogs, plan for:

Stage	Typical Timeframe
Filing to hearing scheduled	6–12 months
Hearing to written order issued	4–8 weeks
Total filing to order	12–18 months (sometimes longer)

Retroactivity: In some cases, the LTB can make approved increases retroactive to the filing date. This means tenants may owe a lump-sum back payment covering the gap between when you filed and when the order was issued. Retroactive orders are not automatic — they depend on the adjudicator and the specific circumstances — but they are possible and worth understanding before you file.

Most landlords continue collecting the standard guideline increase during the AGI process and address any retroactive amounts after the order is issued.

Practical Advice for London, St. Thomas, and Strathroy Landlords

In the London CMA and surrounding communities like St. Thomas and Strathroy, a significant portion of rental housing stock predates 1990 — these buildings need ongoing capital investment just to remain safe and habitable. AGIs are one of the few mechanisms that allow landlords to recover those costs in a rent-controlled environment.

Five practical tips:

1. Document capital work from day one. Get licensed contractors, keep every invoice, and photograph before and after. Reconstructing documentation 18 months later is nearly impossible and will hurt your application.

2. Separate capital from maintenance in your bookkeeping. Use a dedicated category for capital expenditures so you're not scrambling to sort through mixed records when you file. See our tips on rental property tax deductions in Ontario for guidance on how this distinction matters at tax time too.

3. Talk to a paralegal before filing. LTB hearings for AGIs can get complex, especially when tenants challenge the capital-vs-maintenance distinction. A landlord-tenant paralegal typically charges $1,000–$3,000 for an AGI hearing — usually well worth it on a significant capital expenditure.

4. Consider timing. If you're planning multiple capital projects, batching them into a single AGI application (rather than filing multiple times) reduces costs and LTB appearances.

5. Notify tenants proactively. While you're not legally required to inform tenants before filing, telling them that major capital work has been completed and that you may seek an AGI tends to reduce conflict at the hearing — and demonstrates good faith to the adjudicator.

Is an AGI Worth Filing? A Simple Framework

For a single-unit property: Unless your capital expenditure was very large (think $30,000+), the filing fee, your time, and potential paralegal costs may not be justified. Run the numbers first: calculate the estimated monthly increase per unit, multiply by the amortization period, and compare that to your total application costs.

For a multi-unit building (4+ units): The math usually works. Costs spread across multiple units mean a single significant capital expenditure can yield a meaningful, sustained rent recovery.

For borderline expenses: If you're not certain an expense qualifies as capital rather than maintenance, get an opinion before filing. A denied AGI still costs you $201 in filing fees plus your preparation time.

Frequently Asked Questions

Q: What's the difference between a guideline rent increase and an AGI in Ontario? A: A guideline increase is the standard annual percentage set by the province (e.g., 2.5% in 2024) — any landlord can apply it with 90 days' written notice and no LTB approval. An above-guideline increase requires a formal L5 application to the LTB, a hearing, and an order before you can collect it. AGIs are specifically for landlords who've incurred qualifying capital expenditures or extraordinary cost increases that the standard guideline doesn't cover.

Q: Can I apply for an AGI on expenses I paid for several years ago? A: The LTB has look-back limits. Generally, capital expenditures must have been incurred within the past 18 months before the application, though the specific rules depend on the type of expense and when the work was completed. If you've been holding off on filing, do it sooner rather than later — older invoices may fall outside the eligible window.

Q: What happens if my AGI application is denied or reduced? A: If the LTB denies the application or approves a lower amount than you claimed, you are still entitled to collect the standard annual guideline increase — you just can't go above it. There is no penalty for an unsuccessful AGI application, though you lose the filing fee and preparation costs. You can appeal an LTB order to the Divisional Court on a question of law, but this is uncommon and expensive.

Q: Do I need a paralegal or lawyer to file an AGI application? A: You are not legally required to have representation, but it is strongly recommended for AGI hearings — especially in multi-unit buildings or when tenants are likely to challenge the application. AGI hearings involve documentary evidence, cross-examination, and legal arguments about the capital-vs-maintenance distinction. A licensed paralegal who handles LTB matters regularly is usually the most cost-effective option.

Q: Can I apply for an AGI if I just bought a building and inherited deferred maintenance? A: Yes, but this is one of the more difficult AGI scenarios. The LTB will still scrutinize whether the expenses were capital improvements or just catching up on deferred maintenance from a previous owner. Strong documentation — including a pre-purchase inspection report that identifies the capital deficiencies — can help establish that the work was genuinely capital in nature rather than routine upkeep.

Q: Does an approved AGI increase stay in place permanently? A: The above-guideline portion is time-limited — it applies for the amortization period assigned to the improvement (e.g., 15 years for a roof). After that period, the increase is no longer applied. The underlying rent level, however, remains permanently — it doesn't reset when the AGI expires. The tenant continues paying the higher rent; you simply can't add the AGI component after the amortization period ends.

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If you own rental properties in London, St. Thomas, or Strathroy and you've recently completed major capital work, it's worth assessing whether an AGI application makes financial sense for your situation. Prospera Properties works with landlords across London, St. Thomas, and Strathroy to manage this kind of complexity — from documentation practices to navigating LTB applications. Get in touch with us to talk through whether your recent capital expenditures qualify and whether the process is worth pursuing.