A landlord installs a window bench in a residential condominium. This is an example of:

Chattel refers to personal property that is movable and not permanently affixed to the land or a structure. Examples include furniture, vehicles, and equipment. Since the window bench is permanently installed and becomes part of the condominium, it does not qualify as chattel.

Conversion refers to the process of changing the nature of property from personal to real or vice versa. While the installation of the window bench could be seen as a change in property type, this term more accurately applies to broader legal contexts involving ownership rights and does not specifically describe the act of installing a fixture.

Transformation implies a change in form or appearance, which does not specifically relate to property law or fixtures. While the installation of the window bench changes the visual aspect of the space, it does not accurately capture the legal context of how the property is classified.