The icon for a basement is a house with a window and a door and under it has a rectangle smaller than the one used for the shape of the house and inside it is a stairs to represent the stairs use to go down to a basement.
This Basement icon is made in flat color style
. This format was developed by Icons8 designer team and became immensely popular for use in web and mobile applications. Feel free to download this icon in PNG format for free, or unlock other formats for $5. Unlike other icon packs that have merely hundreds of icons, this monster icon pack contains 6,000 icons, all in the same style and quality.