The safest order for a website redesign is this: first take stock of which pages get Google traffic, your current list of URLs, and your forms and tracking codes; then decide how to redesign; and when you're done, set up a 301 redirect for every URL that changed. Costs vary widely. Having a design agency rebuild a company website typically costs NT$20,000 to over NT$100,000 according to PRO360's quote statistics, with fully custom builds starting at NT$100,000. If your site already runs on WordPress and its structure still works, you can also redesign it page by page in place instead of tearing it down. When traffic drops after a redesign, the new design is rarely to blame. Far more often, URLs changed without redirects, or pages that brought in traffic were deleted.
This article follows the order you'd actually work in: when it's time to redesign, what to take stock of first, three ways to do it with their timelines and costs, how to redesign an old site with AI, and what to check afterwards. If your site is on WordPress, we'll also show how WP × Roamer AI, the AI website builder for WordPress, can redesign it in place.
Agency rates come from the public quote statistics of PRO360, a Taiwanese freelance marketplace (data period 2024 to 2026). Redirect and URL-change practices follow Google Search Central's official documentation. All checked October 2026. Actual amounts depend on the quote you receive.
When to redesign: six signs
A redesign costs money and time, and being tired of the look isn't always reason enough. The more practical test is whether the site has started getting in the way of business. The most common sign is a broken mobile layout: tiny text, sideways scrolling, buttons crammed together. Most customers look up businesses on their phones now, and if the mobile site looks broken, few will bother opening it on a computer. The second sign is speed, when the home page takes several seconds to appear. Often the cause is an old theme carrying too many plugins and uncompressed images, which maintenance can sometimes fix; but if the old theme itself is too heavy, replacing it beats patching it forever.
The third sign is looking dated. When the design is stuck a decade ago and the photos and information are too, visitors start wondering whether you're still in business. PRO360 suggests refreshing a site's layout every two to three years, which is a reasonable benchmark. The fourth is that you can't change anything yourself: every text edit means calling someone, the admin is so tangled nobody dares touch it, or the site was built with a tool that's no longer maintained.
The fifth sign is that the person who built the site can't be reached. A redesign then often doubles as a takeover: get the domain, hosting and admin accounts back first, then talk about changes. The steps are in the person who built your site is gone: taking over an unmaintained website. The sixth is that your business has changed: the site needs to start selling, taking bookings or running memberships, and the old structure can't carry it.
On the other hand, if only the information is out of date, like prices, opening hours or team photos, and the layout is still fine, that's a maintenance job. Update the content and skip the cost of a redesign.
Before you redesign: traffic, URLs, forms and tracking codes
The most expensive redesign mistake is throwing away the things that were bringing you customers. Before touching anything, spend an hour or two writing down the following.
First, which pages get Google traffic. Open the Performance report in Google Search Console, stretch the date range, switch the table below to Pages and sort by clicks. The pages at the top are the ones Google keeps sending visitors to. Keep their content through the redesign, and preferably keep their URLs too. If you haven't set up Search Console yet, verify your site now and let it collect some data before you start.
Second, a complete list of URLs: posts, pages, products and category pages all count. On a WordPress site you can build it from the sitemap. The built-in one is at /wp-sitemap.xml after your domain; if you use an SEO plugin, use the sitemap it generates. This list becomes the basis for your redirects.
Third, forms and tracking codes. List every form on the site and the inbox each one sends to, then every tracking code installed: Google Analytics, the Search Console verification code, the Meta pixel, LINE Tag and ad conversion tracking. When you change themes or platforms, these are the easiest things to lose without noticing. Forms stop sending, ads start under-counting conversions, and it's often weeks before anyone spots it.
Finally, note your plugins and what each one does, and take a full backup right before you start. With these lists in hand, whether you do the work yourself, hire an agency or hand it to AI, you'll know what can't go missing.
The three most common reasons traffic drops after a redesign
The first is URLs that changed without redirects. Change your URL structure and the old addresses return 404 errors, so the rankings Google built up for them have nowhere to go. Google Search Central recommends server-side permanent redirects (301 or 308) that map each old URL to a new URL with the same content, rather than sending everything to the home page, and avoiding chains of several redirects. It also advises keeping redirects in place for at least a year. On WordPress you can set these up with a redirect plugin such as Redirection, which is active on more than two million sites according to WordPress.org.
The second is content that got deleted or cut down. Redesigns often come with an urge to make the new site "clean," so long service descriptions get trimmed to three lines and old posts get deleted in bulk. That text is exactly what Google uses to understand what a page is about; remove it and the rankings have nothing to attach to. You can rewrite a page that gets traffic so it reads better, but keep its topic and substance.
The third is a set of easily missed settings. SEO titles and descriptions don't carry over, so every search result shows only the company name. Internal links still point at old URLs. Or the "Discourage search engines from indexing this site" box under Settings, then Reading in WordPress, ticked during testing, never gets unticked after launch, and the whole site slowly disappears from search results.
Even when everything is done right, Google notes that rankings fluctuate for a while after URLs change, and for a medium-sized site it can take a few weeks or more for the new URLs to fully replace the old ones. So avoid your busy season if you can, and don't draw conclusions in the first few weeks.
Three ways to redesign: time and cost
There are roughly three approaches, and the difference is whether you replace the whole site. Agency and per-page rates in the table come from PRO360's quote statistics; timelines are typical ranges and depend on the number of pages and rounds of revisions.
| Approach | Typical timeline | Cost guide | Best for |
|---|---|---|---|
| Agency rebuild | A few weeks to a couple of months; fully custom often two to three months or more | Company sites typically NT$20,000 to over NT$100,000; template-based NT$20,000 to 50,000, fully custom from NT$100,000 | Redesigns that start from brand identity, with budget to match |
| Rebuild on a new platform | Rebuilding, moving content and setting redirects; usually longer than an in-place redesign | Close to building a new site, plus the work of moving content and setting redirects | Platforms that have become too limiting, such as moving from Wix to WordPress |
| Redesign your existing WordPress site (hire someone) | Depends on page count, from days to weeks | Quoted per page; layout updates about NT$1,000 to 2,000 per page | Sites whose structure still works but whose layout is dated or needs new features |
| Redesign your existing WordPress site (with Roamer AI) | A first version of the home page comes first, then the rest page by page | WP × Roamer AI Pro at an average of NT$999 a month (billed yearly), hosting and AI included | People who want to control the pace and will keep making changes afterwards |
An agency brings professional design and thorough planning. If brand image matters and you're redoing the logo and identity too, the money is well spent. Keep in mind that quotes usually stop at launch and later changes cost extra. Before signing, confirm who will hold the domain and admin accounts and whether you can move the new site later. Hand the agency your URL list and Search Console data, and make "set up 301 redirects" a line item in the quote. Plenty of redesigns lose their traffic at exactly this step.
Rebuilding on a new platform usually happens because the current one is too restrictive. Wix sites can't be exported in full to another host, so moving from Wix to WordPress means rebuilding in WordPress, bringing products and contacts across and redirecting the old URLs. The steps are in the Wix to WordPress migration guide. If your site is already WordPress and you only want a different host, that's a move rather than a redesign: URLs and content come along untouched, and the usual pitfalls are covered in six things that actually happen when you move from shared hosting.
Redesigning your existing WordPress site carries the least SEO risk. You change the theme or rearrange layouts with a page builder while posts, products and URLs stay put, so no redirects are needed as long as the pages with traffic keep their content. If you can use a page builder, do it yourself; if you'd rather not touch the admin, pay someone per page or hand it to the AI described next.
Redesigning an old site with AI: the actual process
Take WP × Roamer AI as the example. With your site on RoamerHost's managed WordPress hosting, Roamer AI can work directly inside WordPress to change layouts, build pages, swap text and images, and set up menus, headers and footers. A WordPress site hosted elsewhere can be moved over in full, with migration help included in the Pro plan; a site that isn't on WordPress gets rebuilt in WordPress as described above.
Have a way back before you start
Roamer AI takes a snapshot automatically before every change, so if something goes wrong you say "undo" and it rolls back; the platform also keeps automatic backups. Important actions such as deactivating plugins or restoring snapshots only run after you press the confirmation code yourself. Those safeguards are what make it reasonable to try changes page by page; the details are in is it safe to let AI work on your site?
Start with the home page and settle the direction
In your first message, explain who you are, who your customers are, what you dislike about the current site and the feel you're after, and attach a few photos or sites you like. Shop and product photos can be pasted straight into the chat for it to place on the site. It lays out its plan first, starts only after you confirm, and shows you desktop and mobile screenshots when it's done. In the public Fudao Patisserie demo, a single message produced the whole home page.
If you don't like something, just say so, like "the buttons are too small on mobile" or "this section feels cramped"; you don't need to know why. If the whole direction is wrong, say "undo" and start over. You can also build the new home page as a separate page and, once you're happy, set it as the front page under Settings, then Reading in WordPress, so visitors always see a complete site during the redesign.
Redo the other pages one by one, and change only the layout on pages with traffic
Once the home page is settled, ask it to restyle the other pages to match, and the new pages will use the same colors and fonts. For the pages your audit showed get traffic, tell it to keep the content, change only the layout and leave the URL alone. It can also set the SEO title and description for each page, keeping the old wording or making it clearer.
If URLs change, have it set up redirects
If any page URLs change during the redesign, give it your list of old and new URLs, ask it to install a redirect plugin and set them up as 301s, then open a few old URLs yourself to confirm they land on the new page with the same content.
AI redesigns have limits. Design work that starts from brand identity, and features that need to connect to your company's internal systems, still call for a designer or developer. To see the process first, the full Roamer AI demo publishes every prompt and screenshot; to compare other AI tools that can edit WordPress, see five ways to have AI edit your WordPress site.
Post-redesign checklist
Run through these on launch day and over the following weeks. Problems usually show up early.
- View every page on a computer and a phone, and actually click every button and menu item.
- Submit every form yourself and confirm the message arrives.
- Open the Realtime report in Google Analytics, browse the site and check that numbers come in; test ad conversions and the Meta pixel too.
- Open a sample of old URLs from your list and confirm they redirect to the new page with the same content, not a 404 and not the home page.
- Make sure "Discourage search engines from indexing this site" is unticked and no important page is set to noindex.
- Submit the new sitemap in Search Console and run the URL Inspection tool on the home page and a few key pages.
- For the next two to four weeks, check the Performance and Page indexing reports in Search Console weekly, and add redirects for any 404s that appear.
- For an online store, place a test order and follow it from payment through to the notification email.
How to choose
If your site is already on WordPress, its structure still works, your company has no developer, and you want to control the pace of the redesign and have someone looking after the site afterwards, choose WP × Roamer AI Pro from our managed WordPress hosting plans, at an average of NT$999 a month (billed yearly). You redesign in place page by page, roll back anything that goes wrong, and keep your URLs and content.
If you need a complete redesign that starts from brand identity and have the budget, an agency is the better fit; remember to hand over your URL list and put 301 redirects into the quote. If your current platform is too limiting, for example you want to move from Wix to WordPress, follow a migration process and rebuild on the new platform. And if only the information is outdated while the layout is fine, skip the redesign and update the content.
If you're still weighing up how to build your site in the first place, start with the complete 2026 guide to building a website with AI; for which pages a company site needs, see how to build a company website.
FAQ
Q: How much does a website redesign cost?
It depends on the approach. An agency rebuild of a company site typically costs NT$20,000 to over NT$100,000 according to PRO360's quote statistics, with fully custom builds from NT$100,000. Redesigning an existing WordPress site with outside help is usually quoted per page, about NT$1,000 to 2,000 per page for layout updates.
Redesigning in place with AI on WP × Roamer AI Pro costs an average of NT$999 a month (billed yearly), with hosting included.
Q: Will a redesign hurt my SEO?
It can, and how much depends mostly on your URLs and content. If URLs stay the same and pages with traffic keep their content, the impact is usually small. If URLs change, redirect every old URL with a 301 to the new page with the same content and keep the redirects for at least a year. Google also notes that rankings fluctuate for a few weeks after URLs change.
Q: How long does a redesign take?
An agency typically takes a few weeks to a couple of months, and fully custom sites often take two to three months or more. Redesigning an existing WordPress site depends on the number of pages and can take anywhere from days to weeks. Most of the time goes into preparing content and reviewing changes; the traffic and URL audit takes an hour or two.
Q: My old site isn't on WordPress. Can I still redesign it with AI?
Yes, though in practice it means rebuilding in WordPress. A Wix site, for example, can't be exported in full to another host, so you rebuild the pages in WordPress, bring over products and contacts, and redirect the old URLs. Roamer AI can rebuild pages from screenshots and text of the old site, and once your redirect map is ready it can set up and check the redirects too.
Q: Do I need to take my site offline during the redesign?
No. When redesigning in place, build the new home page as a separate page and set it as the front page once you're happy. When switching platforms, build and test the new site on the temporary subdomain first, then point your domain at it; the old site keeps running the whole time.
Sources
- Google Search Central: Site moves with URL changes, Redirects and Google Search, Search Console Performance report
- PRO360: company website cost statistics, web design cost statistics, website maintenance cost statistics (layout refresh frequency and per-page rates)
- WordPress.org: Redirection plugin
WordPress
