A redesign keeps what works: your domain, your content, your reviews, your rankings. It replaces what does not: the page builder, the eight second load, the single Services page that ranks for nothing.
Same four prices as a new build, because the work is the same. Most redesigns are a Starter at $1,500. See what each tier includes.
Not if it is done right, and this is the part most redesigns get wrong. Every old URL redirects to its new page, the titles and content that were ranking stay, and Search Console is watched for two weeks after launch. You get the before and after numbers.
Sometimes. If the site is on WordPress with a heavy theme, no; a rebuild is cheaper than untangling it. If it is plain HTML with bad images, a speed pass is a few hours and I say so.
They stay yours and they stay where they are. If your host is the problem, moving hosting is part of the monthly plan, and your email does not go down during it.
Same four prices as a new build, $900 to $3,200, because the work is the same; the difference is that the redirects and the content migration are included. Most redesigns are a Starter at $1,500.
I run it through PageSpeed and Search Console and tell you whether it needs a redesign, a speed pass, or nothing.