Measure existing opening, well depth, grade and drainage without altering structure.
V18 — specialized system
Basement window well and egress
Coordinate opening, window well, drainage, light, clearance, egress and foundation when a basement window becomes a safety component.
Checked: 2026-08-22
A basement bedroom or enlarged opening can trigger egress, structural and permit requirements.
Foundation cutting, unknown lintel, leakage or non-compliant egress: design/verify before work.
Useful tools / data
- Window/well dimensions
- Foundation plan
- Drainage/grade photos
What the professional checks
- Verify egress per jurisdiction
- Design opening/reinforcement
- Coordinate drainage/waterproofing
Sources and limits
Triage prepares decisions and quotes; it does not replace permits, calculations, inspections or regulated trades.
Related path
Continue with the right tools
These links connect this page to the next useful checks and decisions without repeating the full content.
Connect symptoms to the enclosureStart from condensation, staining, odours or movement before choosing a repair.Open →Adapt the enclosure to climateConnect heat, cold, water, wind and wildfire to building priorities.Open →Assess overall resilienceReview water, climate, safety, autonomy and records with a local score.Open →Screen hazardous materialsIdentify situations where work should stop and testing is needed before disturbance.Open →Open climate guidanceReview climate constraints relevant to assemblies and materials.Open →
Tools related to this issue
Manage the project through closeout
V14
Systems to check before closing the work
V14 connects envelope, air, fire, structure, water and code instead of treating each project in isolation.
V16
Advanced diagnostics to cross-check
V16 connects water, soil, climate, safety, materials and seasonal use to existing projects.
V19
Edge systems to integrate into the project
V19 covers interfaces that become important when multiple home systems interact.
V26
Often-overlooked service interfaces
V26 connects systems that cross utility, plumbing, HVAC, envelope and metering boundaries.
V27
Project risks and overlooked interfaces
V27 connects payment, water, envelope, ventilation and jobsite details that often create costly surprises.
V29
Household safety and compliance details
V29 connects smaller risks that often fall between finishes, appliances, plumbing and local code.
V30
Shared, access and specialized interfaces
V30 connects projects where multiple systems, owners or rules meet.
V31
Commissioning and everyday safety
V31 helps verify systems after work and document the values that make a home safer to operate.
V32
Post-disaster and legacy systems
V32 connects contamination, storm damage, legacy materials and recommissioning before rebuilding.
V33
Invisible constraints before work
V33 checks electrical, legal, environmental and climate constraints that can block a project before demolition starts.
V47
V47 interfaces not to miss
These details are small on a drawing but can control water, structure or durability.