Built around how people choose a plumber
Someone with an urgent problem looks at two or three plumbers, quickly, and calls the first one that looks trustworthy and answers. Your site has a few seconds to show a real business: a name, a licence number, the suburbs you cover, recent work and a number to call.
For planned work, people take longer and compare more. That is where service pages, photos of finished jobs and your Google reviews do the selling, and where a quote form catches the people who would rather not call.