Although you might find many web design firms in your local, the chances are few of them will offer packages specifically for CMS web design. This is because most web design firms have based their business around creating websites from absolute scratch; whereas a CMS tends to use some sort of already established back end system such as WordPress.
With that said many businesses recognize the advantages that using a content management system have. These systems are so basic and easy to use and understand that it means website maintenance is a lot easier and usually a lot cheaper in the long term.
If you are looking for CMS web design you could end up discovering that it is not available in your local area and be forced to use a firm that are located well outside your geographical location. This is not a very bad move in terms of having a website designed; however it may require some travelling for meetings on your behalf. If you are looking for something very specific make sure you don’t only look for firms but also freelance designers as you may find someone who specialises in CMS such as a WordPress Developer.