If you're a self employed and offer a service to a local community then the most important thing is your local network and you should be promoting that fact that you are a part of the community. The good news it that you can do this with out even making contact with your market. You could have the name of your local area in your company name, but if you don't want to do that or have already got a good name you should ensure you have a local contact number. As this is something that everyone will see especially if they want to use your service.
One of the problems that a lot of self employed people have is that they rely on there mobile phones as without them they're unable to take calls on the move. Displaying a local area number and answering it on a mobile devise would be the ideal situation. One of the easiest ways of doing this is to get a virtual number and then direct the calls toward the device you wish to answer it on. This gives you the benefit of a local number, which puts across a good image and give you the local feel you want. While answering it on a mobile device gives you the flexibility and freedom to get on with the jobs you have.