Lenexa, KS Basement Egress Window Requirements
Understanding the 2026 International Residential Code (IRC) requirements for basement bedroom egress windows in Lenexa, Kansas. This guide covers everything you need to know for a code-compliant installation.
Why Are Egress Windows Required?
The International Residential Code (IRC) requires egress windows in all basement bedrooms for one critical reason: life safety. In the event of a fire or other emergency, occupants must have a secondary means of escape.
Beyond safety, egress windows are required to legally call a basement space a "bedroom." Without proper egress, you cannot list the room as a bedroom when selling your home, potentially reducing property value by $15,000-$25,000.
Important Note
A basement room used for sleeping without proper egress is not only illegal—it's dangerous. In an emergency, every second counts.
2026 IRC Egress Requirements for Lenexa
These are the minimum requirements enforced by the City of Lenexa Building Department.
5.7 sq ft
Minimum Opening Area
Net clear openable area required for emergency egress
44 inches
Maximum Sill Height
Maximum height from floor to bottom of window opening
24 inches
Minimum Opening Height
Minimum clear height of the window opening
20 inches
Minimum Opening Width
Minimum clear width of the window opening
Window Well Requirements
When an egress window is below grade (underground), a window well is required to provide adequate space for emergency escape and rescue operations.
- Minimum 9 square feet of clear area (36" x 36")
- Permanent ladder or steps if deeper than 44 inches
- Ladder rungs must be at least 12" wide
- Rungs must project at least 3" from the wall
- Proper drainage system to prevent water accumulation
- Cover (if used) must open from inside without tools
Common Mistakes to Avoid
Many DIY installations and inexperienced contractors make these errors, leading to failed inspections and costly corrections.
- Installing a window that meets gross area but not net clear area
- Placing the sill too high above the floor
- Using a window well that's too small in diameter
- Forgetting the permanent ladder for deep wells
- Not pulling proper permits before installation
- Improper drainage leading to water issues
Frequently Asked Questions
Common questions about Lenexa egress requirements
What size egress window is required in Lenexa, KS?+
What is the maximum sill height for egress windows in Lenexa?+
Do I need a permit for egress window installation in Lenexa?+
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