Website relaunch: process, costs, and the 5 most common mistakes
When a website relaunch is due, how it runs in 6 phases, what it costs in the market and with us, which 5 mistakes cost rankings and leads, and which stack is the right choice in 2026.
A website relaunch is the rebuild of your website on a new technical and content foundation: new design, new structure, usually a new system, but with the existing domain and the existing rankings. That "with the existing rankings" is exactly the part where most relaunches fail.
This article is the overview for decision-makers: what distinguishes a relaunch from a redesign and a migration, six signs it is time, the process in six phases, realistic costs in the market and with us, the five mistakes we see most often, and the question of which system is the right foundation in 2026. The technical SEO checklist has its own article: [website relaunch without SEO loss](/wissen/website-relaunch-ohne-seo-verlust).
Key takeaways
- Relaunch = rebuild on the existing domain. Redesign = new look on the old foundation. Migration = system change without redesign. The three need completely different budgets.
- Time for a relaunch: website older than 4 to 5 years, poor mobile use, load time over 3 seconds, no leads, positioning has changed, team cannot maintain content themselves.
- Six phases: analysis, strategy, design, development, migration and go-live, follow-up. Duration with us 4 to 12 weeks, in the market often 3 to 6 months.
- Market costs: 1,500 to 3,500 euros for small sites, 5,000 to 20,000 euros for mid-market, 25,000 to 80,000 euros for large B2B projects. With us: relaunch from 8,000 euros.
- The most expensive mistake is SEO loss through missing 301 redirects and cut content. Whoever does not survey the old site loses rankings built over years.
What is a website relaunch?
A website relaunch is the complete rebuild of an existing website: design, structure, content, and usually the technical system are redone, while domain and rankings are meant to be preserved. The term is often confused with two other projects that cost noticeably less and deliver less.
Redesign. New look on the existing foundation. Colors, typography, layout are adjusted; structure and system stay. Useful when the site works and only looks old. Costs a fraction, but solves no structural problems.
Migration. Moving to a new system (say from WordPress to Webflow or Next.js) without rethinking the site. Useful when design and content fit but the technology slows things down.
Relaunch. All of it together: new positioning, new structure, new design, new system. That is the project this article is about. It is more expensive because it changes more, and riskier because every change to URLs, content, and structure can cost rankings if it is not handed over cleanly.
Our rule of thumb: if you want to touch more than two of the three things (design, structure, system), it is a relaunch. Then it should be planned as one, with an SEO inventory before the first design draft.
When is a website relaunch necessary?
A relaunch is necessary when the website no longer does its job: bring in leads, present the company correctly, and be maintainable by the team. Six signs where, in first conversations, we almost always recommend a relaunch rather than a redesign:
1. The site is older than four to five years. Not because the date counts, but because user behavior, Google requirements, and your own positioning have changed in that time.
2. Mobile does not work properly. More than half of B2B first contacts happen on a smartphone. If menus stick, text is too small, or forms do not work there, you lose leads before they arise.
3. Load time over three seconds. Measurable in PageSpeed Insights. Slow sites lose visitors and rankings. Often the cause is outdated themes, plugin stacks, and unoptimized images that can no longer be sensibly repaired.
4. No leads through the website. Traffic is there, but nobody fills out the form. That is a structure and copy problem, not a design problem, and it is rarely solved with a new button.
5. The positioning has changed. New target group, new services, merger, rebranding. If the site still shows the company from three years ago, it works against you.
6. The team cannot maintain the site themselves. Every text change needs an agency, the CMS is a patchwork, nobody dares touch it. Then the site is a cost block instead of a sales channel.
How does a website relaunch run?
A website relaunch runs in six phases: analysis, strategy, design, development, migration with go-live, and follow-up. With us that takes 4 to 12 weeks depending on scope; in the market, 3 to 6 months are common. The difference lies not in skipping phases but in clear decisions and a fixed team that does not shuttle between ten projects.
Analysis: inventory of the old site
Before anyone touches a design: which URLs bring traffic and rankings? Which pages convert? What do Search Console and Analytics of the last 16 months say? Which backlinks point where? This list is the insurance against SEO loss. Duration: 1 week.
Strategy: goals, target group, structure
What should the new site achieve, for whom, with which core message? From that come the page structure, keyword assignment per page, and the URL mapping old to new. This is where the system is decided. Duration: 1 week.
Design: copy first, then layout
We write the copy before the design, because layout has to be built around content, not the other way round. Then hero, service pages, references, contact as individual drafts, mobile and desktop. Two feedback rounds. Duration: 2 to 4 weeks.
Development: implementation in the chosen system
Clean build in Next.js, Astro, or Webflow with CMS, animations, forms, and tracking. In parallel: load time, accessibility, structured data. On a staging environment invisible to Google. Duration: 2 to 4 weeks.
Migration and go-live
Transfer content, 301 redirects for every old URL, check tracking, submit sitemap, remove noindex from staging. Go-live on a Tuesday or Wednesday morning, never on Friday. Then 48 hours of monitoring for 404 errors and crawling. Duration: 2 to 3 days.
Follow-up: monitor for 4 to 8 weeks
Compare rankings, indexing, leads, and load time against the baseline values from phase 1. Small fluctuations in the first weeks are normal; losses over 20 percent after four weeks are not. Then adjustments are made.
What does a website relaunch cost?
A website relaunch in the German market costs between 1,500 euros for small sites and 80,000 euros and more for large B2B projects at specialized agencies. With us, a relaunch starts at 8,000 euros. The range is so wide because a "relaunch" can be anything from the five-page business card to a multilingual platform with 400 subpages.
The following table classifies the market ranges as they are cited in 2026 agency overviews. Our own prices are listed separately because they are a concrete commitment: relaunch from 8,000 euros, typical business website 8,000 to 15,000 euros in 4 to 8 weeks, premium presence 15,000 to 30,000 euros in 6 to 12 weeks. All prices include copy, design, development, and SEO-safe migration.
What pushes the price up: page count and languages, individual animations and 3D, interfaces to CRM or ERP, large content migrations, and whether texts need to be rewritten. What pushes it down: clear decisions, one contact person on the client side, and content available at project start.
Website relaunch costs at a glance (market 2026 vs. INSYNC)
| Option | Costs | Duration | Fits |
|---|---|---|---|
| DIY website builder (market) | 500 to 3,000 euros | 2 to 8 weeks of own time | Solo freelancers without SEO history |
| Freelancer, small site (market) | 1,500 to 3,500 euros | 4 to 8 weeks | Up to 10 pages, little migration |
| Agency, mid-market (market) | 5,000 to 20,000 euros | 2 to 4 months | 10 to 50 pages, existing rankings |
| Specialized B2B agency (market) | 25,000 to 80,000 euros and more | 3 to 6 months | Multilingual, interfaces, large migrations |
| INSYNC relaunch Business | 8,000 to 15,000 euros | 4 to 8 weeks | B2B companies, 10 to 40 pages, SEO-safe |
| INSYNC relaunch Premium | 15,000 to 30,000 euros and more | 6 to 12 weeks | Individual design, animation, multilingual |
The 5 most common website relaunch mistakes
The five most expensive relaunch mistakes are SEO loss through a missing inventory, missing or wrong 301 redirects, forgotten tracking, cut content, and go-live without testing. All five are avoidable, and we regularly see all five on sites that come to us after a relaunch.
1. SEO inventory not captured. Nobody knows which 20 URLs bring 80 percent of the traffic. The new site no longer has them, and three months later management wonders where the leads went. We have seen sites lose 70 percent of their organic traffic after a relaunch because exactly this step was missing.
2. 301 redirects missing or pointing to the homepage. Every old URL needs a redirect to the matching new page. Redirecting everything to the homepage is treated by Google like a 404. Backlinks pointing to old URLs evaporate.
3. Tracking forgotten. Analytics, conversion goals, Tag Manager, form events: in every second relaunch at least one of them is missing after go-live. Result: weeks without data, exactly in the phase where you need it most.
4. Content cut because it "no longer fits the design". The 2,000-word service page ranking at position 4 becomes three paragraphs and an image. Design wins, ranking loses. Content that ranks stays, and the layout is built around it.
5. Go-live on Friday without testing. No crawl of the staging site, no 404 check, noindex forgotten or, the reverse, the staging site accidentally indexed. And then it is the weekend. Go-live is Tuesday or Wednesday, with 48 hours of monitoring afterwards.
The complete technical list with every single checkpoint is in the article website relaunch without SEO loss.
Which system for the relaunch: Next.js, Astro, or WordPress?
For B2B websites that need design, load time, and maintainability at the same time, in 2026 we build on Next.js or Astro with Sanity as CMS. WordPress remains an option when a team has worked in it for years and the plugin stack is manageable. Webflow sits in between, for marketing sites without complex logic.
Next.js or Astro plus Sanity. Code we control ourselves, without theme baggage and plugin dependencies. Load times in the green without optimization plugins, animations without compromise, a CMS with exactly the fields the team needs. The downside: changes to the structure need a developer. That is why we pair it with ongoing support.
WordPress. The largest ecosystem, every agency can do it. But: most relaunch requests we get come from WordPress sites suffocating after four years of themes, page builders, and 30 plugins. Whoever stays with WordPress should restart with a lean theme and without a page builder.
Webflow. Good design tool, solid CMS, hosting included. For pure marketing websites a fast and clean choice; with complex data models or multilingual setups it hits limits. The detailed comparison is at Webflow vs. WordPress.
The decision is made in phase 2 and hinges on three questions: who maintains the site afterwards? Which integrations does it need? And how important are load time and design compared with the do-it-yourself factor? More on how we work is on the website relaunch agency page.
Frequently asked questions
A website relaunch is the complete rebuild of an existing website with new design, new structure, and usually a new system, where domain and rankings are meant to be preserved. Unlike a redesign (only new look) and a migration (only system change), the relaunch changes all three levels at once.
In the German market, a relaunch costs 1,500 to 3,500 euros for small sites, 5,000 to 20,000 euros for mid-sized company sites, and 25,000 to 80,000 euros for large B2B projects at specialized agencies. With us, a relaunch starts at 8,000 euros; a typical business website is 8,000 to 15,000 euros.
With us, 4 to 8 weeks for a business website and 6 to 12 weeks for a premium presence. In the market, 3 to 6 months are common. The duration depends less on page count than on decision speed and whether texts and images are available at the start.
Not if the old site is captured beforehand, every old URL redirects via 301 to the matching new page, and ranking content is carried over instead of cut. Small fluctuations in the first 2 to 4 weeks are normal. Losses over 20 percent after four weeks point to missing redirects or removed content.
A redesign changes only the look on the existing structure and technology. A relaunch rebuilds design, structure, and usually the system. Rule of thumb: if the site works and only looks old, a redesign is enough. If leads are missing, load time is poor, or the team cannot maintain the site, it needs a relaunch.
For B2B websites with high standards for design and load time, in 2026 we recommend Next.js or Astro with Sanity as CMS. Webflow is a clean choice for pure marketing sites. WordPress remains sensible when the team is trained in it and the restart happens without a page builder and with a lean theme.
Outside the strongest revenue months and not directly before trade fairs or campaigns. The go-live itself belongs on a Tuesday or Wednesday morning so that two full working days remain for monitoring. Going live on Friday or before holidays is the classic among avoidable mistakes.
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