Should you really set up an HTTPS property in Search Console right from the start of your migration?

This guideline from Google addresses a technical aspect that is often overlooked during HTTPS migrations. Many practitioners focus on 301 redirects and server configuration but forget about the monitoring aspect within Search Console.

The non-retroactive nature of the data means that everything that happens before the HTTPS property is created remains invisible. You will not see indexing errors, organic traffic fluctuations, or crawling issues that occurred during this period.

Why does Google impose this technical requirement?

Search Console treats HTTP and HTTPS as two distinct sites, just like www and non-www. Each protocol has its own set of data, completely isolated from the other.

This architectural choice reflects how Google crawls and indexes the web. For the engine, https://example.com and http://example.com are two different entities, even if the redirects clearly indicate it's the same site. Search Console adheres to this logic of separation.

What happens if the HTTPS property is created too late?

You end up with a black hole of data covering the period between switching to HTTPS and creating the property. Diagnosing any potential issues that occurred during this critical window becomes impossible.

This is particularly problematic when a migration goes wrong. Without historical data, you cannot pinpoint when things went off track or which pages were impacted first. You are essentially flying blind in troubleshooting the issues.

Does early creation pose risks or complications?

No. Creating an HTTPS property even before the site is accessible over HTTPS generates no negative effects. The property simply remains empty until Google starts crawling the secure version.

This anticipation even allows you to prepare the migration calmly: you can set up users, alerts, and check that everything is in order on the Search Console side before the big day. This reduces stress on the day of the switch.

• Search Console data is never retroactive: what is not recorded is lost forever
• HTTP and HTTPS are separate properties with their own histories
• Creating the HTTPS property in advance carries no risk and facilitates monitoring from day one
• A delay in creation generates a blind spot during the critical post-migration period
• Verification of the HTTPS property can occur before the SSL certificate is deployed

Is this recommendation consistent with field observations?

Absolutely. I've seen dozens of HTTPS migrations where the team discovers three weeks after the switch that they have no Search Console data for the critical period. It's a classic oversight that is costly in diagnostics.

This issue is especially evident when there's a post-migration traffic drop and you want to determine if it stems from a technical problem (404 errors, certificate issues, redirects) or unfortunate timing (algorithm updates). Without Search Console data for this window, we can only speculate.

What nuances should be added to this directive?

Google mentions creating the property "as soon as possible," but in practice, create it as soon as the SSL certificate is ordered. You can even create it beforehand if you know a migration is anticipated in the coming weeks.

Another nuance: if you're using a property set, ensure you add the HTTPS version at the same time you create the individual property. Otherwise, you risk ending up with fragmented data across multiple interfaces, complicating overall analysis.

Be cautious as well with sites that are transitioning to HTTPS in stages (section-by-section migration). In this case, you may temporarily have traffic on both properties. [To be verified]: Google does not clearly specify whether the sum of HTTP + HTTPS data during this transition period accurately reflects total traffic or if certain metrics may be duplicated.

In what cases could this rule pose a problem?

For very large sites with complex architectures (multiple subdomains, CDNs with dedicated domains), the proliferation of Search Console properties can quickly become unmanageable. You may find yourself tasked with creating and monitoring 20+ properties.

In such situations, Google's recommendation remains technically valid, but it requires rigorous organization to keep track. A properties tracking spreadsheet becomes essential; otherwise, you will inevitably forget to create some.

What should you concretely do before a HTTPS migration?

Create the HTTPS property in Search Console at least one week before the scheduled migration date. This allows time to resolve any property validation issues without stress on the big day.

Immediately configure the same users and permissions as on the HTTP property. Also, ensure that your connected third-party tools (Looker Studio, reporting tools, rank tracking software) are set up to switch automatically or that you have planned for manual changes.

How can you ensure no data is lost during the transition?

During the first 2-3 weeks post-migration, monitor both properties simultaneously: HTTP and HTTPS. You should see traffic on the HTTP property gradually decrease while traffic on HTTPS increases.

If you notice that the HTTP property continues to receive significant traffic several days after migration, it signals a potential redirect or internal linking problem still pointing to HTTP. Search Console data enables you to specifically identify which pages are affected.

What mistakes should absolutely be avoided during this step?

Never create the HTTPS property only after encountering a problem post-migration. At that point, missing data makes diagnosis much more complex and speculative.

Also, avoid assuming that the property set replaces individual properties. The set aggregates data, but some functionalities are only available at the individual property level. Always create both.

• Create the HTTPS property in Search Console at least 7 days prior to migration
• Validate the property using the most durable method (HTML file or DNS, not the meta tag which can disappear)
• Set up users and permissions identical to the HTTP property
• Add the HTTPS property to the existing property set if applicable
• Update API connections and third-party tools to point to the new property
• Document the creation and switch date for future reference