Most web projects should allow for 12 to 16 weeks from the time that the project kicks off to the time that the website launches. Where complexity is higher or the scope of the project is particularly large, projects can take 6 months or longer.Yes, completing a project in less time is possible. Yes, we’ve done it.uilding a new website is hard work, and not just for the company you’ve hired. There are certain things that only you can do. Gathering content, reviewing deliverables, providing feedback, answering questions.