Durham Region's egress window specialists — serving Bowmanville 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 Bowmanville 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.
Bowmanville pairs one of the GTA's finest collections of Victorian-era homes — many in its heritage downtown dating to the late 1800s — with modest mid-century bungalows and a huge wave of post-2000 subdivisions. The older homes almost always have narrow utility-grade basement windows (around 14" × 24") far below the Ontario Building Code minimum for sleeping quarters, while newer homes offer large, finishable basements.
As Bowmanville's population grows and housing costs rise, basement suites have become one of the most effective ways Bowmanville 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.
As the largest community in fast-growing Clarington — and one of the more affordable markets in the GTA east — Bowmanville sees strong demand for legal basement suites. Homeowners across the historic core, Waverley, and the newer Northglen subdivisions are converting basement space into rental units, and egress window installation is almost always the first step.
From your first message to a passed inspection — here's exactly how every Bowmanville 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 Bowmanville 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 Municipality of Clarington. 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 Bowmanville. 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 Bowmanville project.
Most Municipality of Clarington 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.
Common OBC-compliant window sizes installed in Bowmanville: 30×36 casement and 44×36 sliding. Maximum recommended width is 48" — wider openings may require a structural engineer review.
In December 2021, the Municipality of Clarington adopted Official Plan and Zoning By-law amendments to expand permissions for Additional Dwelling Units, in line with provincial housing legislation. Many Bowmanville lots can now accommodate up to two additional dwelling units (three units total) beyond the principal home, subject to the zoning that applies to your property.
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.
Modpro installs egress windows specifically to meet the OBC requirements for suite compliance. Once your window is installed and framed, you'll have the inspection-ready finish needed to move forward with the Municipality of Clarington's registration process. With Durham Region rental vacancy under 2%, a legal basement suite typically generates around $1,850 per month.
What homeowners in Bowmanville's rental market are seeing right now:
Real projects completed by our crew across Durham Region. Bowmanville-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 Bowmanville 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 Bowmanville homeowners before booking.
Most egress window installations in Bowmanville 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 Municipality of Clarington 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 Bowmanville 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 Bowmanville: 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. Bowmanville permits up to two additional dwelling units on most residential lots (subject to zoning). 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. We handle the window work; the Municipality of Clarington can guide you on the full registration process.
Yes. We serve all Bowmanville neighbourhoods including Historic Downtown Bowmanville, Memorial Park, Waverley, Northglen, Liberty, and Soper Creek. Based in Whitby, we're typically able to schedule installations within a few days of quote approval — no long waits.
Bowmanville is the largest community in the Municipality of Clarington, which had a 2021 Census population of 101,427 — up 10.2% from 2016, one of the fastest growth rates in Durham Region. Bowmanville's housing spans a historic Victorian downtown, mid-century bungalows, and extensive post-2000 subdivisions; the majority of homes are single-detached.
Rapid growth, relative affordability, and the coming GO Transit extension have made Bowmanville one of the most active markets in eastern Durham for legal basement suites — and by extension for egress window installation.
Modpro is based in Whitby and serves all of Clarington; Bowmanville projects are typically scheduled within a few days of quote approval.
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.