International Residential Code (IRC) 对卧室的定义是：

• A floor area of not less than 70 square feet and not less than 7 feet in any horizontal dimension
• A minimum ceiling height of 7 feet, and if there is a sloped ceiling, then a minimum of 50% of ceiling must be a minimum of 7 feet high
• At least one operable emergency escape and rescue opening with a clear opening of not less than 5.7 square feet, and a required egress window that must have a minimum width of 20 inches, a minimum height of 24 inches, and a maximum window sill height of 44 inches.

各州是不是adopt这个规定不知道。