Getting the Wider View ...
Many small or 'one-man' businesses rely on word of mouth recommendation rather than advertising - and that often works very well in the local area. In today's connected world, however, having some kind of presence on the internet opens up further opportunities.  Beside, a good website will capitalise on your good reputation earned through word-of mouth recommendations. If you haven't done so yet you could reach further afield. The internet can be a low cost way of making your mark - setting out your stall in what is potentially a worldwide marketplace.

There is a lot of discussion about responsive websites, and mobilization ... simply put web sites should work neatly on any size screen, whether on a desktop PC, laptop, or mobile device.  I design for all screen sizes from scratch. Older websites can often be converted to function (and look good) on mobile devices too.

Do I Really Need a Website?

If you are considering using a website to promote your business for the first time you might want to test the water first, for a modest outlay.  A simple mobile friendly website could be the right choice for you.  At the very least, your services and products will be there to be found.
Accessing the internet using mobile devices is fast becoming the norm for potential customers searching for the very services you offer.