Turn Your Basement Into a Legal Rental Apartment.
Licensed P.Eng. drawings for walkout entrances, underpinning, enlarged egress windows, and basement second suites across Ontario — everything you need to make your basement a legal, rentable apartment that passes permit review.
The structural work your basement apartment needs.
Most legal basement apartments need one or more of these — we engineer and draw them all.
Walkout Entrances
A legal apartment needs its own separate entrance. We design the structural opening, retaining walls, stairs, and egress for a walkout or below-grade entrance — sealed and permit-ready.
See if you qualify →Underpinning & Bench Footing
Basement ceiling too low to be legal? We engineer the underpinning or bench footing needed to lower your floor and gain code-compliant ceiling height — safely, on solid footings.
Check your ceiling height →Enlarged Egress Windows
Every legal bedroom needs a code-sized egress window and window well. We design the enlarged opening and the structural lintel above it so the wall stays sound and the room passes inspection.
Ask about your windows →Second Suite Permit Drawings
The full package: architectural and structural drawings — floor plans, fire separation, egress, and layout — sealed by a P.Eng. and ready to submit for your building permit.
Get your drawings →Everything your permit needs, sealed by a P.Eng.
A complete package — from checking what your basement needs to a permit-ready submission.
Structural Drawings
Underpinning, bench footing, walkout openings, and window lintels — engineered and sealed so the work is safe and passes inspection.
Code Compliance Built In
Ceiling height, egress windows, fire separation, and smoke alarms — designed to meet the Ontario Building Code the first time.
Site & Feasibility Review
We assess your basement — ceiling height, entrance options, windows — and tell you exactly what it takes to make it legal before drawings begin.
Permit Application Support
Guidance through the building permit submission so your application moves smoothly to approval.
From form to sealed drawings in three steps.
Submit Your Project Details
Fill out the short form with your location and project basics. Takes under 2 minutes.
Engineering Review
Our P.Eng. team reviews the scope and contacts you to discuss requirements, timeline, and fees.
Receive Your Drawing Package
Stamped, permit-ready drawings prepared for your building permit application.
Your basement could be a legal rental — if it's engineered right.
Ontario now permits up to three residential units on most lots — but a legal basement apartment usually needs a walkout, underpinning for ceiling height, or enlarged egress windows, all backed by sealed drawings. Getting the engineering right from the start avoids rejections, delays, and costly do-overs.
Get a Free QuoteFind Out If Your Basement Qualifies — Free Quote
Tell us about your space and we'll send a quote for the drawings your legal rental needs — usually within one business day.
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