HELP! ideas to expand customer base?

[robert m]

Can he sell more to existing customers? That's is easier than finding new customers.

If he needs new customers then do some analysis of current customers, where do they come from, what are they like, how do they hear about you, how do they contact you?

From that you can build a template of ideal customers (or segments or target markets in marketing speak) and target them e.g. find them and sell to them.

One suggestion as well is ask every new customer for new customers . e.g. if its a restaurant ask them "you know your market realty well who else do you think would be interested in this?"