Durham Region's egress window specialists — serving Ajax 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 Ajax 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.
Ajax's housing runs from the established lakeside neighbourhoods of South Ajax to the newer subdivisions of Central and North Ajax. A large share of Ajax homes were built in the 1970s and 1980s, before egress windows were a code requirement — these typically have narrow utility-grade basement windows (around 14" × 24"), well below today's Ontario Building Code minimum for sleeping quarters. Newer homes in Applecroft, Nottingham, and Audley offer large basements that are ideal candidates for a legal suite.
As Ajax's population grows and housing costs rise, basement suites have become one of the most effective ways Ajax 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.
Ajax is one of the GTA's fastest-diversifying communities and a busy GO Transit commuter town. With rents climbing across Durham Region, homeowners in South Ajax, Applecroft, and North Ajax are increasingly converting basement space into legal 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 Ajax 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 Ajax 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 Town of Ajax 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 Ajax. 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 Ajax project.
Most Town of Ajax 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 Ajax: 30×36 casement and 44×36 sliding. Maximum recommended width is 48" — wider openings may require a structural engineer review.
In March 2025, the Town of Ajax approved a zoning by-law amendment permitting up to four dwelling units on most residential properties — among the most permissive additional-dwelling-unit frameworks in Durham Region — along with reduced parking requirements to make it easier to add units. This significantly expands the opportunity for Ajax homeowners to create legal, income-generating suites.
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 unit 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 the framing is complete, you'll have the inspection-ready finish needed to move forward with the Town of Ajax's permit and registration process. With rental vacancy across Durham Region sitting under 2%, a legal basement suite typically generates around $1,850 per month in additional income.
What homeowners in Ajax's rental market are seeing right now:
Real projects completed by our crew across Durham Region. Ajax-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 Ajax 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 Ajax homeowners before booking.
Most egress window installations in Ajax 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 Town of Ajax 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 Ajax 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 Ajax: 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. Ajax permits up to four 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 Town of Ajax can guide you on the full registration process.
Yes. We serve all Ajax neighbourhoods including South Ajax, Pickering Beach, Applecroft, Central Ajax, Nottingham, Audley, and North Ajax. Based in Whitby, we're typically able to schedule 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.
Ajax is a lakeside Durham Region town with a 2021 Census population of 126,666. About 64.7% of its homes are single-detached, with a housing stock weighted toward the 1970s–1980s and a second major wave built after 2000. Older South Ajax homes typically have utility-grade basement windows far below the OBC's 0.35 m² minimum, while newer Central and North Ajax homes offer large, finishable basements.
As a diverse, fast-growing GO Transit commuter community, Ajax has strong rental demand — and its 2025 move to permit up to four units per property makes it one of Durham Region's most active markets for legal basement suites, and by extension for egress window installation.
Modpro is based in nearby Whitby, so Ajax jobs are local to us — we're typically able to schedule new projects 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.