If you need to build a website from scratch, first of all, you should contact an experienced SEO specialist, and only after that you should go to the developers. In my experience, many times I came across the cases where customers came to me with website that already built, and in 90% of cases I told them that it is easier to rebuild the site from scratch rather than rehash what's already done. Of course, as a result, the cost is increasing and time is wasting. Almost all web developers say that they build SEO-friendly websites, but I assure you it is not so at all. Much better to prepare initially all the necessary SEO-documentation for the website, all the recommendations, technical specifications, and start to build a website according to those materials. It will save you both time and money, and nonreducing nerve cells. I have a lot of experience in building of websites from scratch as a SEO-consultant and I will be happy to help you with making a good start for your business on the Internet.