Frequently Asked Questions

Underpinning excavation (or bench-footing excavation) is a specialized technique that involves digging beneath an existing structure to expand or reinforce the foundation without demolishing the building. It is often used to lower a basement floor, strengthen a weakened foundation, or create new living space under a home.

Main advantages of underpinning excavation include:

• Increased basement height: allows for a more comfortable or legally habitable space.
• Foundation reinforcement: commonly used to stabilize aging or settling foundations.
• Added space without exterior expansion: ideal for urban areas with limited lot size.
• Property value boost: more usable space increases resale value.
• Minimal structural disruption: the house remains intact during the project.

This technique requires advanced engineering to ensure structural integrity. To find out if underpinning excavation is right for your home, contact Heneault Gosselin.