Need help using Regex to parse street addresses

Let me start off by stating three things:

1. I suck at regex,
2. I've googled this and didn't come up with an answer, and
3. I'm on ColdFusion 10

I have a form with an autocomplete input that allows a user to enter street addresses (either in full like "123 Main St, Mayberry" or in part like "123 Main St" or "Main St" or "Main St, Mayberry".  I need to tell if the user has provided a street number or not at the beginning of the value they enter into the input.  I'm trying to test the input value with this code:

<cfif ReFind("^([0-9]{1-5})",q)>

     <!--- address starts with a number --->

<cfelse>

     <!--- address doesn't start with a number --->

</cfelse>

q is the input value being passed into my code from the autocomplete function.

x should be either 0 (if the input value doesn't start with a number) or a positive integer (if the input value does start with a number).

Basically, I just need to know if the input value starts with one to five digits.

I suppose I could just do something like:

<cfif Val(q)>

Am I better off using a regex, and if so, what am I doing wrong with the one I've tried?

-Carl V.