This isn’t Field of Dreams — building a website isn’t enough to make customers come to you. Your website needs to get a good position on Google, and you won’t stay at the top of the rankings without work.
The most common mistake small businesses make is to build a website, but never update it. The longer you go without updating your site, the further it will fall in search engine rankings. Google assumes that your content is not as relevant when it’s old. Enter search engine optimization.