house painter; painting contractor
Refers to a professional or business that paints buildings, houses, or structures. Often used in formal or business contexts.
I asked a painting contractor to repaint the exterior walls.
塗装工 is a painter as a worker or craftsman, while 塗装業者 emphasizes the business or contractor aspect.
Compound of 塗装 (painting, coating) and 業者 (business, contractor).