What are the code requirements for egress window wells?

Code requires an egress window well be dug for egress windows below ground level. The area at the bottom of the well must equate to 9 square feet, and there must be 36” of clearance between the egress window and the back of the well. Wells deeper than 44” must have ladders or egress window steps attached, and well covers and grates must open or lift from the inside without the assistance of tools.