Egress
A code-compliant way for occupants to escape and for emergency responders to enter, commonly measured by a bedroom window or door opening.
Applies to
Egress windows · Basement remodeling · Bedrooms · Remodeling
Project example
Converting a basement room into a bedroom may require an egress window with a compliant clear opening, well, ladder, and drainage.
Also called
Where this term shows up in permit work and how it affects the project
Egress can determine whether a room may be marketed as a bedroom, which drawings are needed, and whether the project passes final inspection.
If this term appears in a form, plan comment, or local ordinance, start with the building permit guide, compare it against the zoning permit guide, then use the permit guide directory to find the right local path.
Why egress matters in a permit file
Egress describes safe movement out of a building, while emergency escape and rescue openings provide specific bedroom or basement escape and responder access. A window marketed as an 'egress window' is not enough; opening size, sill height, well geometry, ladder, covers, guards, drainage, and room use all matter.
Where it appears in the permit process
Room and use review
The plans identify bedrooms, basements, habitable rooms, stories, exits, travel path, and the exact code provisions triggered by the project.
Opening and well design
Clear opening dimensions, sill height, operation, window well, ladder, cover, drainage, structural opening, and exterior grade are coordinated.
Structural and site review
Foundation cutting, headers, retaining conditions, utilities, property setbacks, guards, and water management are documented.
Final operation check
The inspector verifies the finished clear opening and that occupants can open and use the complete escape path without keys, tools, or special knowledge.
What you may need
- Floor plan identifying room use and required escape or exit path
- Window schedule with net clear opening, width, height, and sill dimensions
- Foundation opening, header, well, ladder, cover, guard, and drainage details
- Manufacturer operation and clear-opening data for the exact unit
- Site information for wells near lot lines, utilities, or drainage features
Where to get it or verify it
- Use the adopted residential or building code and local amendments for room and opening requirements.
- Use manufacturer data for net clear opening—not rough opening or glass size.
- Use a structural professional for foundation alterations or retaining conditions beyond prescriptive details.
Common mistakes that create comments or delays
- Choosing a window by nominal unit size instead of clear opening
- Measuring sill height before the finished floor or window trim is known
- Designing the window but omitting well, ladder, cover, drainage, or guard details
- Calling a basement room a bedroom without resolving every life-safety requirement
What to do next
- Confirm the room's proposed legal use and applicable escape requirement.
- Select the exact window and design the complete opening and exterior well.
- Coordinate structure, drainage, utilities, guards, and site placement.
- Test the finished opening and route before final inspection.