If your Markham home has a bedroom or living space in the basement, Ontario Building Code 9.9.10.1 requires a properly sized egress window, and Egress Window Pros Toronto installs code-compliant egress windows and window wells across Markham, from Unionville to Cornell, with pricing between $4,500 and $8,000 for a full installation, including the window, well, drainage, and labour.
What's Included in an Egress Window Installation
Every egress window installation we do in Markham includes the full package, not just the window itself. what you get:
- OBC-compliant window sizing: Minimum 0.35 m² clear opening, with no dimension less than 380 mm (15 inches). We verify the rough opening and finished opening against the code before we pour or install anything.
- Window well installation: Galvanized steel or corrugated plastic well, sized to meet the 760 mm depth requirement for wells serving egress windows. We anchor the well properly and backfill with clear stone for drainage.
- Drainage and waterproofing: A perforated drain line connected to your weeping tile system, plus a sump connection where needed. This is critical in Markham's clay-heavy soil, which holds water against foundation walls.
- Window well cover: A clear, load-rated cover that keeps leaves, snow, and animals out while letting light through. Covers are UV-stabilized and rated to support a person's weight.
- Interior finishing: We frame, insulate, and drywall the window opening so it looks like it was always part of the room.
We also offer the supporting services Markham homeowners typically need:
- Window well installation only (if you already have a compliant window): $800–$2,500
- Window well covers: $300–$900
- Window well drainage and waterproofing: $500–$3,000
- Basement waterproofing (exterior or interior): from $1,200
- Window well replacement and repair: $500–$2,000
- Basement door installation (walk-out or Bilco-style): $2,500–$6,000
Pricing for Egress Windows in Markham
Pricing depends on your foundation type, wall thickness, and soil conditions. Here are the typical ranges for Markham homes:
| Service | Typical Price Range |
|---|---|
| Egress window installation (full) | $4,500–$8,000 |
| Window well installation | $800–$2,500 |
| Window well covers | $300–$900 |
| Window well drainage & waterproofing | $500–$3,000 |
| Basement waterproofing | From $1,200 |
| Window well replacement & repair | $500–$2,000 |
| Basement door installation | $2,500–$6,000 |
The price range reflects the variables: a 9-inch poured concrete wall in a 1960s bungalow near Toogood Pond costs less to cut than a 12-inch block wall with brick veneer in a newer Unionville build. We give you a fixed quote after a site evaluation, no hourly surprises.
Our Installation Process in Markham
We've installed 400+ egress windows and window wells across the GTA, and the process is the same every time:
1. Free site evaluation and quote within 48 hours. We measure your window opening, check the foundation wall thickness, review the soil conditions around your home, and confirm the location works for an egress window.
2. Permit and code review. We handle the Markham building permit application and ensure the design meets OBC 9.9.10.1 for your specific room.
3. Cutting and excavation. We saw-cut the foundation wall, remove the concrete, and excavate the well area. For Toronto-area freeze-thaw cycles, we install the drainage layer at the right depth to prevent frost heave.
4. Window and well installation. The window goes in with proper flashing and sealing. The well is anchored, backfilled with clear stone, and connected to drainage.
5. Interior finishing and cleanup. We frame and finish the interior opening, then remove all debris. Your yard is left clean, and the excavated soil is either spread or hauled away.
Year-round installs are standard for us. Markham winters don't stop the work, we use insulated curtains and heaters during concrete cutting in cold months, and the drainage design accounts for frost depth.
Why Markham Homeowners Choose Us
We're a family-run Toronto basement contractor with 12 years of below-grade work. We're licensed, insured, and WSIB covered. But the real reason homeowners in Markham work with us comes down to three things:
Code compliance, guaranteed. Every egress window we install meets OBC 9.9.10.1 exit requirements. If your basement bedroom doesn't have a compliant egress window, you can't legally call it a bedroom, and that affects your home's value, your resale potential, and your family's safety. We make sure it's done right the first time, so you pass inspection without back-and-forth.
Drainage that handles Markham's soil. Markham sits on a mix of clay and glacial till, which means poor natural drainage and high hydrostatic pressure against basement walls. Our window wells include proper drainage connections to your weeping tile system, not just gravel dumped in a hole. That's the difference between a dry window well and one that floods every spring thaw.
A 10-year workmanship warranty. We stand behind our work. If something fails due to our installation, we fix it free for a decade. That's rare in this industry and it's why many of our Markham jobs come from referrals, homeowners in Unionville and the Markham Civic Centre area recommending us to neighbours.
Get Your Free Egress Window Quote in Markham
If you're in Markham and need a basement egress window, a window well replacement, or a basement door installation, we'll come out for a free site evaluation and give you a fixed quote within 48 hours. Call Egress Window Pros Toronto today, we serve all of Markham, including Unionville, Thornhill, and the areas around Toogood Pond.