Your visitor is standing in a Ravenswood kitchen holding a phone
The device, the room and the mood are all knowable, and they should decide the layout.
Picture the actual moment. Someone is in the kitchen they are tired of, on a phone, at nine in the evening, with three contractor names in their notes app. They are not reading. They are scanning for a reason to eliminate you.
Design for elimination. Big legible type, one obvious phone number, a visible service area and photographs that load before they scroll past. Anything that makes a visitor wait is a reason to leave, and there are two other tabs open.
Desktop still matters for the second visit, usually when a spouse gets involved and the conversation turns to money. Build a site that reads well on both rather than a phone site with a desktop afterthought.
Interior work is browsed most in the dark months, which is exactly when your visitor is home, indoors and staring at the room. Design for a tired person on a couch, not for a design award.