A website build proposal is an official document submitted to a client outlining the recommended plan of action for creating and building a website. The proposal should list out all the services, timeline, deliverables, costs, and expected outcomes that are needed to develop the website. It should also address any potential risks or issues that may arise during the project. The tone should be professional yet engaging; highlighting not just the technical details but also the potential emotional impact of the website. Ultimately, it should give the client a clear understanding of the overall proposed goal and how each step will achieve it.