Really, a phone number is likely not needed at all.
I agree.
Big phone number—big mistake
Phone numbers are rarely useful or remembered from sign work. They are only essential in the wishful minds of our clients, who almost always have unrealistic expectations about what a sign can do. I believe most people do what I do when looking at a sign—remember the name and then find the number online. I only recall one time I used a phone number on a sign. On a FOR RENT sign in front of an unnamed apartment building. I pulled over and wrote it down. Am I really the exception?
Big phone numbers are generally ineffective and waste valuable space.
The purpose of large sizing is to create
dominance. Lack of dominance is a widespread weakness in sign work today, yet its importance can't be overstated. It's part of creating a
hierarchy of design elements in a layout. It is how you lead a viewer's eye through the composition. The dominant element is often called the "entry point" to a design. The biggest element is seen first. This should never be a phone number. Why would you want to see a phone number first?
A dominant element should be instantly recognized—and be readable and digestible in about 1.5 seconds, the average time (in my opinion) a person spends looking at a sign, assuming either the sign or the viewer is moving. That means the dominant element should be meaningful. All other elements should be absolutely secondary to the dominant element, in no way competing with it.
Too much information?
Too much copy is a problem, to be sure, but it is more a
sales problem than a design problem. You must, with your client, edit ruthlessly at the beginning if a sign is to be effective. Salespeople often see their only job as closing a sale rather than selling effective sign work. Savvy designers make the best sign salespeople. Or, at the very least, a salesperson should receive training in effective layout. Good layout is not magic. It is learned.
Mastering Layout by Mike Stevens, and
The Elements of Graphic Design by Alex White, should be required reading for a sales department. The first book is straight forward, not a difficult read, and was written by one of us, a sign guy. The second book is packed with stuff and may seem intimidating for nonreaders, but everything in it is valuable and most of it is applicable to sign work. It is written in such a way that you can just pick a chapter and read it by itself without much time and effort (especially the second edition). You can even randomly open the book to a single page and learn something useful almost every time.
Brad in Kansas City