How do you redesign or rebuild a website without losing Google traffic?

Should I redesign or rebuild?

A redesign changes how the site looks on a platform that still works. A rebuild replaces the platform. A digital agency, which sells both, gives two signs that a rebuild is due: the platform no longer receives security updates, and routine content changes need a developer. Its test is simple. If the problem is only how the site looks, redesign. If the structure cannot do what you need, a new coat of paint will not remove the limit³.

The same page says redesigns carry minimal SEO risk when URLs and content structure stay stable³. That is the practical rule. The more addresses change, the more redirect work you owe Google, and a rebuild usually changes more of them.

What do I do with the old URLs?

Build the map before design is finished. Google's site-move guidance says to map your old URLs to the new ones, then use the map to update internal links, canonical tags and sitemaps¹. Each old URL should redirect to its closest equivalent. Folding several thin old pages into one stronger new page is acceptable. Pointing them all at the home page is not, because it can look like a soft 404¹.

Use permanent redirects on the server. Google treats a 301 or 308 as a signal that the new URL should be the canonical one, and recommends server-side redirects over JavaScript, which it calls a last resort because Google may never see it if rendering fails⁵. Temporary codes such as 302 do not carry the same signal, so the old page usually stays in results⁵. Avoid chains: send each old URL directly to its final address¹.

Keep them. Redirects should stay generally for at least 1 year, and Google suggests considering indefinitely¹. Old addresses may keep appearing in results for a while and then fade⁵.

What goes wrong on launch day?

The usual damage is self-inflicted. Google's guidance for moves that keep the same URLs says to test the new copy on a temporary hostname with a noindex rule, then remove any temporary crawl blocks, such as a robots.txt disallow or noindex tags, when you start the move². Forgetting is costly: a noindex rule makes Google drop the page entirely from results, whoever links to it⁴.

Other checks from the same guidance: confirm that firewalls and bot protection are not blocking Googlebot, keep your Search Console verification tag in the new site, and keep the old host running until its traffic reaches zero². Expect a temporary drop in crawl rate right after launch, followed by a steady increase over the next few days².

Move a whole small or medium site at once. For a large site, Google recommends moving one infrequently changing section first to test the effect on traffic and indexing¹.

How long until rankings settle?

Google gives no date. It says rankings fluctuate temporarily during a move and typically settle over time, with larger sites taking longer¹. Treat the first weeks as a monitoring period, not a verdict.

Prepare the comparison before launch. Export your top landing pages and the queries that bring visitors, then compare after launch. Search Console's index coverage graphs show whether pages are being indexed as the old host winds down². Check the pages that drop first for a missing or wrong redirect.

What does a redesign cost?

Published ranges come from agencies that sell redesigns, so read them as indications. For India, one agency lists a small business site of 5 to 10 pages at Rs 15,000 to Rs 30,000 from a freelancer, Rs 30,000 to Rs 60,000 from a mid-tier agency and Rs 60,000 to Rs 1.5 lakh from a premium agency. A corporate site of 20 or more pages runs Rs 40,000 to Rs 80,000, Rs 80,000 to Rs 2 lakh and Rs 2 lakh to Rs 8 lakh across the same three tiers⁶.

It also lists what raises the price: custom animations, which it says can add 30 to 50 percent over a static design, and moving between platforms, which costs more than redesigning within one⁶. In US dollars, another agency puts a freelancer at $3,000 to $10,000 for a standard 10 to 20 page site and a boutique agency at $5,000 to $25,000⁷.

The two sources use different scopes, so do not read them as a conversion table. Scope drives the price: page count, features, content migration and motion. Compare quotes only against one written page list.