I need an image made for a sign.

This will be a 3'-0" x 3'-0" sign on posts put in the yard of a new home under construction. The purpose is to let potential buyers know the property is available for sale, who the builder is, and who the realtor is. I am the realtor. It should be simple and be able to be read from someone in a car about 30 feet away.
The background will be white. The lettering across the top will be black. The realtor name and phone number will be black. The real estate company name will be red to match the Builder's Logo.