floor space; floor area
Primarily used in real estate and construction to refer to the total floor area of a building, often measured in tsubo. The gloss 'esp. Of the ground floor only' is a usage note; in practice, it can refer to total floor area, but context may specify ground floor.
The floor area of this house is 30 tsubo.
I'm looking for a property with a large floor area.
Standard kanji form; the shorter 建坪 is more common than 建て坪.
Alternate spelling with okurigana; less common but still used.
Compound of 建 (たて, 'build') + 坪 (つぼ, 'tsubo', a unit of area). The reading たてつぼ is a straightforward combination.