noun
front of a building; facade
Refers to the outward appearance or frontage of a building, often implying its style or impression.
その店は表構えが立派だった。
The shop had an impressive facade.
外観 is a more general term for outward appearance of anything, while 表構え specifically refers to the front exterior of a building.
Compound of 表 (おもて, 'front') and 構え (がまえ, 'structure, appearance'). The exact historical derivation is uncertain, but the word is conventionally associated with the front exterior of a building.