What words are used in Taiwan for a place or person that mends clothing?
We don't use 補 or 縫補 in Taiwan. We use 修改衣服 instead.

When you like to get the clothes mended, you should find the 修改衣服/換拉鏈 (Modify clothes/Change zippers) signs as follows.





We still call the person who does these works 老闆.