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House Addition with Full Underpinning

UnderpinningWalkout BasementExcavation
House Addition with Full Underpinning — main view
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Project Overview

Complete house addition project including excavation, full underpinning on one side, bench underpinning on the other, and a door cut-out through the existing foundation wall. One of the most complex residential structural projects in the neighbourhood.

Duration
3 WEEKS
Permits
BUILDING PERMIT REQUIRED

auto_storiesThe Story Behind This Project

This project was one of the most complex residential structural jobs in the Mt. Pleasant neighbourhood. The homeowner wanted to add a rear addition while lowering the basement — which meant we had to underpin both sides of the house simultaneously while keeping the existing structure stable. We used a cut-and-break saw to open a new doorway through the original load-bearing brick foundation wall. Every step had to be engineered and inspected.