Lowering a basement: underpinning, bench footing and elevations
Before gaining headroom, coordinate foundations, temporary sequencing, sewer elevation, groundwater, radon and the new slab.
Decision triage
VERT / GREEN · JAUNE / YELLOW · ROUGE / RED
What the professional checks
The professional checks footings, soil, loads, underpinning/bench sequence, temporary stability, sewer, groundwater, drainage, radon and the new slab.
Official sources
- SCHL — problèmes structurels avant rénovation de sous-sol
- SCHL — fondations et sous-œuvre d’une maison existante
Sources checked: 2026-08-24
Manage the project through closeout
Explore: Systems to check before closing the work
Systems to check before closing the work
This section connects envelope, air, fire, structure, water and code instead of treating each project in isolation.
Explore: Specialized systems to cross-check
Specialized systems to cross-check
This section completes gas, soil, water, fire, climate and structural interfaces.
Explore: Specialized diagnostics to verify
Specialized diagnostics to verify
This section connects systems that become costly or regulated when a primary project triggers them.
Explore: Edge systems to integrate into the project
Edge systems to integrate into the project
This section covers interfaces that become important when multiple home systems interact.
Explore: Household safety and compliance details
Household safety and compliance details
This section connects smaller risks that often fall between finishes, appliances, plumbing and local code.
Explore: Invisible constraints before work
Invisible constraints before work
This section checks electrical, legal, environmental and climate constraints that can block a project before demolition starts.
Explore: V47 interfaces not to miss
V47 interfaces not to miss
These details are small on a drawing but can control water, structure or durability.