The starting point of web design is going to be the information that your home page carry because your home page is the first page on your small business website that your visitors see so this page should have information about your business and on your home page you should explain what you do and why you are the company to use and when you do business and if you do business in several cities you want to include which cities you serve.
Those people who would like to come to your business then you need to have the complete physical address on every page of your website because some service businesses involve going to your clients and in this case you only need your address on your home page and a contact page. You do not need to worry about what your business is you just need your small business name and your phone number with area code and your email address.
A not so big business website needs a way for visitors to contact you which is why you will also need a contact page and on it your visitors will need your physical address and mailing address if different as visitors need your phone number and email address as well so on your contact page you can have a contact form that visitors can fill out to send you a message.
There should be a page that define in more particular way about what you do and this can be a Product page or Service page and this page should explain to your visitors what service you provide or what products you sell also if you can add a price list to it and if you provide a service that has a finished project like landscaping or home repairs then add some pictures of the end results.
An about us page explains about your services and on this page you will want to tell your audience more about your business than you did on your home page which is entry page of the website so here you can tell your business history and also can explain why your visitors should use your small business instead of the competition. Hence, your visitors will want to know how long you have been at this and what makes your business special and what you offer.
The pages mentioned in above description are just basic pages you need and as the business owner you probably know your small business is different than others so your small business website will have individual needs and you can make pages based on your business needs.