What makes a contractor business card look professional?

A contractor business card does not need to explain the whole company. It needs to make the next call easy.

That is where many cards go wrong. They try to list every service, every licence detail, a slogan, a QR code, a photo, five icons, and three phone numbers. The customer keeps the card, then cannot tell what matters.

For most small contractors, the best version is simple: name, trade, service area, phone, email or website, licence number if it matters in that market, and maybe one clean line about the type of work.

I would prioritise:

A good card is not a brochure. It is a reminder: this is the person to call when the job comes up.