Which term describes a three-dimensional physical development erected within a lot or property?

The term that describes a three-dimensional physical development erected within a lot or property is "Building." A building is specifically designed for various purposes, such as residential, commercial, or industrial use, and involves permanent construction that has height, width, and depth, distinguishing it as a solid structure.

While "structure" might seem similar, it has a broader definition that can include other forms of constructions like bridges or fences, which may not fit the traditional conception of a building. The term "site" refers to the land itself where development occurs, and it does not imply any physical construction. "Condominium" specifically describes a type of residential arrangement where individuals own separate units within a larger building, but it does not inherently describe the building itself. Therefore, "Building" is the most accurate term for a three-dimensional physical development in this context.