SEO Site Restructure

Looking to get some input to handle the restructure of my website the best.

I have majority of my backlinks flowing to a generic services page; "newtown plumbers" but the page isn't structured as ".com/newtown-plumbers", just ".com/plumbers" but is ranking high for my keyword. I want to restructure and create specific city/service pages like "las vegas plumbers" and "newtown plumbers" – and keep my generic services page fairly generic, as an overview.

What's the best way to restructure…

SEO Site Restructure