Window replacement cost in Ontario is one of the most searched questions homeowners ask before booking a quote — and one of the hardest to get a straight answer on. Most guides throw out a range so wide it tells you almost nothing. This one won’t do that.
At Advanced Home Services, we’ve been installing windows across Windsor-Essex since 1988. We’ve seen every home type, every foundation condition, and every budget in this region. What we’ve learned is that window replacement costs in Windsor-Essex follow patterns — and once you understand those patterns, you can budget accurately without being surprised.
Here’s what replacement windows actually cost in this market in 2026, broken down by type, installation method, and everything else that moves the number up or down.
What Does Window Replacement Cost in Ontario?
The honest answer: most Windsor-Essex homeowners pay between $600 and $1,400 per window installed for standard replacement windows in 2026. That range covers the window unit, labour, basic interior trim, and disposal of the old unit.
For a complete whole-home replacement — typically 10 to 15 windows in an average Essex County home — the total project cost usually lands between $8,000 and $18,000. Larger homes or projects involving specialty window types, brick cut-ins, or structural changes to openings can push that higher.
Those numbers reflect Windsor-Essex specifically. The GTA runs 10 to 20% higher on labour. Our region’s lower overhead and local crew structure keeps costs more reasonable — which is one reason homeowners in Tecumseh, LaSalle, and Leamington aren’t paying Toronto prices for the same window.
Window Replacement Cost by Window Type
Not all windows cost the same to replace. Style, size, and installation complexity all affect the final number.
Casement windows are one of the most popular choices in Windsor-Essex homes and are also among the most energy-efficient options available. Replacement casement windows typically run $700 to $1,100 per unit installed, depending on size and glass package. Their crank-operated sash seals tightly against the frame, which makes them particularly well-suited for Ontario’s cold winters.
Double-hung and single-hung windows tend to be the most straightforward replacements in older homes. Because they fit into existing openings without modification in most cases, they often come in on the lower end of the range — $600 to $950 installed.
Awning windows are comparable in cost to casements — typically $700 to $1,100 — and are often installed in bathrooms or below picture windows because they can be opened even during light rain.
Picture windows are fixed-glass units with no moving parts, which keeps the hardware cost down but drives up the glass cost as the size increases. A standard-size picture window runs $700 to $1,200 installed; large custom units can exceed $1,800.
Bay and bow windows involve more material, structural support brackets, and additional interior finishing. Expect to pay $2,500 to $5,000 or more for a full bay window replacement, depending on the size of the projection and whether the seat area requires rebuilding.
Basement windows — hopper or sliding style — are typically the lowest-cost replacement on a per-unit basis, running $400 to $800 installed for a standard swap. If the concrete opening needs to be enlarged, or if you’re upgrading to a code-compliant egress window, costs increase significantly. We cover basement window costs in detail further down.
Window replacement cost by type — Ontario industry averages, 2026
| Window type | Industry avg installed range | Complexity | Relative cost |
|---|---|---|---|
| Double or single hung | $600 – $950 | Straightforward | Lower end |
| Casement | $700 – $1,100 | Standard | Lower end |
| Awning | $700 – $1,100 | Standard | Lower end |
| Picture (standard) | $700 – $1,200 | Standard | Mid range |
| Picture (large or custom) | Up to $1,800+ | Glass size driven | Mid range |
| Basement (standard swap) | $400 – $800 | Easiest | Lower end |
| Bay or bow window | $2,500 – $5,000+ | Most involved | Higher end |
Industry average estimates only. Figures reflect typical Ontario contractor rates for installed replacement windows in 2026, including the unit, labour, basic trim, and disposal. Actual costs vary by window size, frame material, glass package, and site conditions. These are not Advanced Home Services prices — contact us for a free in-home assessment.
Full-Frame vs. Insert Replacement: What’s the Difference and What Does It Cost?
One of the biggest variables in any window replacement quote is the installation method, and it’s one that many homeowners don’t know to ask about.
Insert (retrofit) replacement fits a new window unit into the existing frame, leaving the interior and exterior trim intact. This method is faster, less disruptive, and generally costs $150 to $250 per window in labour on top of the window unit price. It’s the right choice when the existing frames are structurally sound, plumb, and free of rot or water damage.
Full-frame replacement removes the entire window assembly down to the rough opening in the wall. This method costs more — typically $250 to $400 per window in additional labour — but it’s necessary when existing frames are damaged, when you want to change the size of an opening, or in older Windsor-Essex homes where the original frames have deteriorated behind the casing. Full-frame replacement also allows for upgraded insulation in the rough opening, which improves long-term thermal performance.
If a contractor quotes you an unusually low number without clarifying the installation method, that’s a signal to ask. An insert quote and a full-frame quote for the same opening can differ by $300 to $500 per window before anything else changes.
Installation method comparison
- New unit fits inside the existing frame — casing untouched on both sides
- Faster, less disruptive, and less expensive overall
- Right choice when frames are sound, plumb, and rot-free
- Slightly reduces daylight opening — new frame overlaps the old one
Industry avg labour add-on per window
$150 to $250 above window cost
- Entire assembly removed — frame, sash, casing, and all
- Required when frames are damaged, rotted, or opening size is changing
- Allows insulation upgrade in the rough opening cavity
- Common in Windsor-Essex homes from the 1970s and 1980s
Industry avg labour add-on per window
$250 to $400 above window cost
Industry average estimates only. An insert quote and a full-frame quote for the same opening can differ by $300 to $500 per window. Always confirm the installation method before accepting a quote. These are not Advanced Home Services prices.
What Drives Window Replacement Cost Up in Windsor-Essex?
Several factors push a project above the standard range. Knowing them in advance prevents sticker shock.
Brick homes require cut-ins.
A large percentage of Windsor-Essex homes are brick construction. When a window opening needs to be enlarged — to accommodate a larger unit, a different style, or an egress upgrade — the brick must be cut. Brick cut-in work adds cost and time, typically several hundred dollars per opening depending on the scope.
Upper floors and accessibility.
Windows above the ground floor require scaffolding or extension ladders. That adds labour time. If the exterior access is complicated — a narrow side yard, a high peak, or an addition roof below — expect additional charges.
Frame condition.
Water damage behind old window casings is common in homes built before the 1990s, particularly around windows that were poorly caulked or installed without proper flashing. Discovering rot or structural damage once work has started adds repair cost to the project. A reputable company will flag this in the estimate if they find it during a pre-installation inspection, or disclose it transparently if it’s found once work begins.
Glass packages.
Triple-pane glass, Low-E coatings, argon gas fill, and tempered safety glass all add cost per unit. These upgrades are often worth it — especially triple-pane in a home with high heating costs — but they move the per-window price up by $100 to $300 depending on the option.
Number of windows.
Larger projects spread setup and mobilization costs across more units. A 15-window whole-home replacement typically costs less per unit than a 3-window partial replacement, because the crew and equipment are already on site.
What pushes your project above the standard range
Windsor-Essex has a high proportion of brick-construction homes. Enlarging an opening requires specialised tools and adds several hundred dollars per opening. Not every window company handles this in-house — worth asking before you sign.
Windows above the ground floor require scaffolding or ladders. Narrow side yards and difficult roof lines extend labour time. This site cost may not appear as a separate line in every quote.
Water damage behind old casings is common in pre-1990s homes. Rot found after the trim comes off adds repair cost mid-project. A thorough pre-installation inspection reduces this risk.
Triple-pane glass, Low-E coatings, argon gas fill, and tempered glass each add roughly $100 to $300 per unit. These upgrades are generally worth it in Ontario’s climate but they move the number up.
Setup, mobilisation, and disposal costs are spread across fewer units on small projects. Two or three windows typically costs more per unit than a whole-home replacement.
What About Energy Rebates for Window Replacement in Ontario?
The Canada Greener Homes Grant program has changed in recent years. As of 2026, the primary active rebate program available to Ontario homeowners replacing windows is the Home Renovation Savings Program, delivered through Enbridge Gas in partnership with the province.
This program offers up to $100 per eligible window opening for Energy Star-certified replacements. To qualify, replacement windows generally need to meet Energy Star Zone 1 standards for Southern Ontario — which means a U-factor of 1.22 W/m²K or lower. Most quality double-pane and triple-pane windows sold in this market meet that threshold.
The rebate doesn’t eliminate a large portion of the project cost, but on a 12-window whole-home replacement, $1,200 in rebates is money back in your pocket for a product you were replacing anyway.
We recommend checking current program availability directly with Enbridge Gas before booking your project, as program structures and funding availability change. Your Advanced Home Services consultant can walk you through what’s currently active at the time of your in-home estimate.
How to Get an Accurate Quote for Your Home
No article — including this one — can tell you exactly what your project will cost. Window replacement pricing is home-specific. The condition of your existing frames, your window count, the styles you’re choosing, your ceiling heights, and the accessibility of each opening all affect the final number.
What we can tell you is that an accurate quote requires a physical visit. Be cautious of companies that quote large projects over the phone without seeing the windows. On-site measurements confirm the actual rough opening size, reveal frame condition issues, and allow your consultant to identify any structural considerations before they become surprises.
At Advanced Home Services, every estimate starts with a free in-home consultation. Use our project builder to describe your project in advance, or call us at 519-945-6454 to book directly.
Get Three Quotes — Including Ours
The standard advice in any home renovation is to get three quotes. For window replacement, that advice is sound. What you’re comparing isn’t just price — you’re comparing installation method, warranty terms, product quality, and the contractor’s familiarity with your specific home type and neighbourhood.
When comparing quotes, ask each company: Is this insert or full-frame? What’s the warranty on both the product and the labour? Are you cutting the brick yourselves or subcontracting it? What happens if you find frame damage once work has started?
The answers tell you a great deal about who you’re dealing with.
Window replacement cost in Ontario is a real investment — one that affects your home’s energy performance, comfort, and resale value for the next 20 to 30 years. Getting it right matters more than getting it cheap.
Request a free estimate from Advanced Home Services and let’s look at your windows together.
