Durham Region's egress window specialists — serving Oshawa homeowners with OBC-compliant installations, start to finish. One crew, one quote, no subcontractors.
No site visit required. We respond within 1 business day with a firm, written price.
Three services. One specialist crew. Every project handled from first cut to finished install — no general contractors, no third-party subs.
We cut a new opening through your Oshawa home's foundation wall, excavate the window well, install the window unit, and finish everything to OBC standard — inside and out.
Already have a basement window that's too small? We enlarge the existing opening to meet egress requirements — retaining the existing frame location while expanding the rough opening and well.
Replacing a failing, leaking, or inefficient basement window with a new unit — same opening size, new window. A clean, straightforward job when no sizing upgrade is needed.
Oshawa's residential neighbourhoods — from Pinecrest and Centennial to Farewell and Eastdale — are predominantly made up of solid brick bungalows and two-storey homes built between the 1950s and 1980s. These homes were constructed long before egress windows became a building code requirement, meaning the vast majority have narrow utility-grade basement windows: typically 14" × 24" — far too small to meet today's Ontario Building Code standards for sleeping quarters.
As Oshawa's population grows and housing costs rise, basement suites have become one of the most effective ways Oshawa homeowners increase property value and generate rental income. But a basement bedroom is not legal for sleeping without an OBC-compliant egress window — the minimum 0.35 m² unobstructed opening that allows emergency exit and rescue access. Modpro installs exactly to that standard, which means every bedroom we service is a bedroom that can be legally rented or used.
Demand is also driven by Ontario Tech University (formerly UOIT), whose 12,500+ students create year-round pressure on Oshawa's rental market. Homeowners near Simcoe Street North, Windfields, and Kedron are particularly active in converting basement space into rentable units — and egress window installation is almost always the first step.
From your first message to a passed inspection — here's exactly how every Oshawa project runs.
Send us photos of your basement window location (inside and outside). We assess concrete wall thickness, joist direction, and excavation depth remotely and send you a firm, written price within one business day. No site visit needed upfront.
We book your Oshawa installation and handle everything: concrete cutting with a track-mounted wall saw, exterior excavation, window well installation, supply of the OBC-compliant window unit, and structural framing around the new opening.
We finish the interior framing, insulate around the new opening, and ensure the installation meets all Ontario Building Code requirements. Most of the construction mess is managed outside — your basement stays clean throughout.
Any basement window installation or enlargement that creates a new opening — or significantly increases an existing one — in a foundation wall requires a building permit from the City of Oshawa Building Services. This is not optional: an unpermitted egress window can create problems when selling your home and may not satisfy your insurance provider.
The Ontario Building Code (Division B, Part 9) governs all residential egress window requirements in Oshawa. The minimum unobstructed opening is 0.35 m² with no single dimension less than 380mm, and the window sill must be no higher than 1,000mm from the finished floor. Modpro installs to these exact specifications on every Oshawa project.
Most City of Oshawa residential building permits for window work are processed within 2–4 weeks. We can advise you on what to include in your permit application and what the inspector will look for during the final review.
Official References:
Common OBC-compliant window sizes installed in Oshawa: 30×36 casement and 44×36 sliding. Maximum recommended width is 48" — wider openings may require a structural engineer review.
Under Ontario's More Homes Built Faster Act (Bill 23, 2022), the City of Oshawa is required to permit up to three residential units on most residential lots — including a principal unit, a secondary suite in the basement, and a garden suite or additional detached unit. This has significantly expanded the opportunity for Oshawa homeowners to create legal, income-generating basement apartments.
The critical requirement for any basement bedroom used as sleeping quarters: an OBC-compliant egress window. Without one, the room cannot legally be used as a bedroom — which means it cannot be included in a rental suite and will not pass a building inspection for secondary suite registration.
Modpro installs egress windows specifically to meet the OBC requirements for secondary suite compliance. Once your window is installed and the framing is complete, you'll have the documentation and inspection-ready finish needed to move forward with Oshawa's secondary suite registration process. With Oshawa's rental vacancy rate sitting under 2%, a legal basement suite typically generates $1,500–$1,900 per month in additional income.
What homeowners in Oshawa's rental market are seeing right now:
Real projects completed by our crew across Durham Region. Oshawa-specific photos will be added as Kirk's local photo library grows.
All photos are real Modpro projects — no stock images. View the full project gallery →
Every review is verified and unsolicited — this is what working with Modpro in Oshawa actually looks like.
"We recently hired Modpro Egress Solutions for a window project and couldn't be happier with the results. From the initial quote to the final installation, everything was handled professionally. They explained the process clearly, showed up on time, and completed the job within the timeline they promised. Kirk and his team were respectful of our home, kept the work area clean, and the quality of the installation is outstanding."
"Egress window creation, installation, and clean up in basement. On time, excellent communication, reasonable pricing, prompt, professional, and full clean up. Supporting small business in the area, would both use again and recommend without reservations."
Read all 33 reviews on Google Business Profile
Send us a few photos of your basement window — inside and outside — and we'll have a firm, written quote back to you within 24 hours. No site visit needed.
The most common questions we hear from Oshawa homeowners before booking.
Most egress window installations in Oshawa range from $2,750 to $4,000 for a single window. The main pricing factors are concrete wall thickness (standard poured or block vs. thick stone foundation), joist direction relative to the opening, and excavation depth. We provide firm, written quotes based on your photos, with inclusions and exclusions stated clearly.
Yes. The City of Oshawa Building Services requires a permit any time you are creating a new opening or significantly enlarging an existing one in a foundation wall. This is standard across all Ontario municipalities. Unpermitted work can cause issues at sale and may void your home insurance. Most straightforward residential window permits in Oshawa are processed within 2–4 weeks. We can advise you on what to submit.
The Ontario Building Code requires a minimum unobstructed opening area of 0.35 m², with no single dimension less than 380mm, and a maximum sill height of 1,000mm from the finished floor (or 1,500mm with a permanently installed step). Common compliant window sizes we install in Oshawa: 30×36 casement and 44×36 slider.
Most single-window installations are completed in 2–4 days. Multi-window projects or jobs with deeper excavation typically run 3–5 days. The timeline depends on soil conditions, wall thickness, and joist direction. 99% of the construction mess is kept outside — your interior disruption is minimal throughout the project.
Yes. Under Oshawa's updated zoning aligned with Ontario's More Homes Built Faster Act, most residential lots in Oshawa now permit up to 3 units. Any room used as sleeping quarters in a basement suite requires an OBC-compliant egress window. We install exactly to that standard — giving you the foundation you need for a legal suite permit. We handle the window work; your contractor or the city can guide you on the full suite registration process.
Yes. We serve all Oshawa neighbourhoods including Pinecrest, Centennial, Farewell, Eastdale, Windfields, Kedron, Samac, Lakeview, McLaughlin, and more. Based in Whitby, we're typically able to schedule Oshawa installations within a few days of quote approval — no long waits.
Based in Whitby, Modpro's crew covers all of Durham Region. Click your city for local pricing, permit requirements, and project examples.
Oshawa is Durham Region's largest city, with a population approaching 170,000 and a residential housing stock that reflects its industrial and post-war growth history. The city's core neighbourhoods — Pinecrest, Centennial, McLaughlin, and Farewell — are lined with solid brick bungalows and detached two-storeys built between the 1950s and 1980s. These homes are structurally sound and well-built, but their basement windows are almost universally utility-grade: typically 14" × 24", far below the OBC's 0.35 m² minimum for sleeping quarters.
The combination of a large stock of older homes, a growing student population at Ontario Tech University, and strong rental demand has made Oshawa one of the most active markets in Durham Region for basement suite creation — and by extension, one of the most active markets for egress window installation. Homeowners in Oshawa's newer north-end neighbourhoods — Windfields, Kedron, and Samac — are also increasingly converting bonus basement space into revenue-generating suites as their mortgages mature and the rental opportunity becomes compelling.
Modpro serves all of Oshawa and is typically able to schedule new projects within a few days of quote approval. We're based in Whitby — Oshawa jobs are local to us, and we treat them that way.
Send us photos of your basement window — inside and out. We'll have a firm written quote back to you within 24 hours. No site visit, no pressure.