Cadaxx Design prepares complete Toronto underpinning permit drawings for basement lowering and foundation reinforcement projects. Our BCIN-licensed team coordinates design, structural engineering, and OBC compliance to ensure safe, fast City approval. On this Riverdale Ave project in Leslieville, Cadaxx managed every step — from site measurement and underpinning sequence design to submission — creating a stronger, deeper foundation ready for a future legal basement apartment in Toronto.
Explore this project
More Legal Basement Projects
Project Overview
This project involved basement underpinning to increase ceiling height and prepare the space for a future legal basement apartment. Cadaxx handled all design coordination, permit drawings, and City submission.
Key Details
-
Location: Riverdale Ave, Leslieville (Toronto)
-
Type: Underpinning and basement renovation
-
Scope: Structural design · Permit drawings · City coordination
-
Status: Approved / Completed
Results
-
Increased ceiling height to meet OBC 9.5.3.1 requirements
-
Reinforced existing foundation walls
-
Improved drainage and moisture protection
-
Permit approved without variance
Design & Structural Coordination
Cadaxx developed precise underpinning drawings showing sequential benching, new footing depths, and foundation reinforcement.
All designs were coordinated with structural engineers and City reviewers.
Highlights:
-
Step-by-step underpinning sequence and notes
-
Wall reinforcement and waterproofing details
-
Sump pit and drain upgrades
-
Integration with planned basement apartment layout
-
Full OBC Part 9 compliance
Cadaxx provides Toronto underpinning permit drawings that meet both structural safety and City submission standards.
Construction Highlights
Cadaxx provided ongoing coordination during excavation and underpinning to confirm conformance with approved drawings.
The completed project achieved the targeted ceiling height and structural stability, preparing the basement for future finishing and occupancy.
Why Choose Cadaxx for Underpinning Permits in Toronto
-
Specialists in underpinning permits and basement conversions
-
BCIN-licensed designers with OBC and structural coordination experience
-
Clear, accurate drawings that speed up City approval
-
Coordination with structural engineers and contractors
-
Trusted by homeowners and builders across Toronto
Toronto Underpinning Permit Process
-
Our streamlined process ensures that every underpinning project in Toronto is properly documented and reviewed before construction begins.
-
Steps:
-
Site measurement and structural evaluation
-
Zoning and OBC compliance review
-
Preparation of underpinning and basement permit drawings
-
Coordination with structural engineer for stamp and load review
-
Submission to the City of Toronto for permit
-
Ongoing support during review and construction
-
This process reduces delays and ensures safety and compliance.
FAQs — Toronto Underpinning Permits
-
Q1: Do I need a permit to underpin a basement in Toronto?
Yes. Any excavation or foundation lowering requires a building permit and structural drawings prepared by qualified designers and engineers. -
Q2: How long does an underpinning permit take to approve?
Typically 3–4 weeks, depending on City examiner workload and complexity. -
Q3: Can Cadaxx design underpinning and a future basement apartment together?
Yes. Cadaxx often designs both in one coordinated submission to save time and cost.
-
Cadaxx Design specializes in Toronto basement and underpinning permits, providing complete design, coordination, and permit drawings for homeowners across the GTA. Our BCIN-licensed team ensures every project meets the Ontario Building Code and receives fast City approval — from legal basement apartments to foundation underpinning and secondary suite conversions.
Learn more about how Cadaxx designs basement apartment and underpinning permits in Toronto → Basement Permit Services
Start Your Toronto Underpinning Permit
-
Cadaxx Design helps homeowners and contractors obtain underpinning permits in Toronto with complete structural drawings, OBC review, and fast City submission.
Contact us to start your underpinning or basement project today.