What a redesign includes
A review of what the current site does well and what Google already sends it, a new structure with every old address mapped, a design you approve before the build, the build itself, redirects, launch, and a Search Console check afterwards. Your words are kept where they work and rewritten where they do not, with your sign-off. Pay once and the first 12 months of care are included; pay monthly and the site is looked after from day one.
Most small business redesigns take six to twelve weeks from kick-off to launch, and larger sites with several sectors, a booking system or an integration take three to four months. The biggest single cause of delay is waiting for content, which is why we start on it in week one. There is more on timings in our article on how long it takes to build a website.