Say what the business does
Start with a plain description of the work. If you wash windows, say that. If you make custom cabinets, say that. The first sentence should help a stranger understand the business without decoding a slogan.
Explain where you work
For a local service business, name the area you actually serve. Someone looking for help should be able to tell whether you come to their town before they call.
Give people a reason to feel comfortable contacting you
Use real information. That may include your own experience or photographs of early work. If a license applies to your work, include it. A new business does not need invented history.
Make the next action obvious
Decide what you want an interested person to do. For many service businesses, that means calling or requesting a quote. Put that action where people can find it without searching the page.
Use contact information you actually monitor
Keep the business name consistent and give people a reliable way to reach you. If customers visit you, include the correct location and current hours.
Add pages when they earn their place
You can start with one page when the business is simple. Add another page when a service needs its own explanation or when customers keep asking a question that deserves a permanent answer.