I used the various shell buildings as a template and built a series of townhouses with stores and an art gallery on the ground flor. I use it as a retail lot. Like you I didn't think it fit with a house.
https://athena.thesims.com/v1/images/1/0x00001d90/32F1AE39-F0DD-11ED-81BD-BBDE0A17B9B0/01.jpg
Link here if anyone is interested: https://www.ea.com/sv-se/games/the-sims/the-sims-4/pc/gallery/32F1AE39F0DD11ED81BDBBDE0A17B9B0?category=lots&searchtype=ea_origin_id&sortby=downloads&time=all&searchquery=jeslet40&max=50&maxis=false