Check locally to see if fees will be charged. Some providers accept commercial sites as part of their basic service and will allow a non-profit site as part of basic service monthly fees. It's your job as site developer to gather this information and forewarn your client of likely expenses. You also need to consider site maintenance and changes, once the site is up and running. Web editors to make changes to existing sites for fees.
Some clients are willing to learn how to make their own changes.
You need to consider these issues and help your client decide how to proceed. The easy answer is to develop a site that doesn't require much, if any, change. Such sites are less likely to attract repeat visitors but may well provide basic information to the public and serve ably as an entree to the client's services. In your proposal discuss as many of these matters as you can get settled. Begin your term project home page.