Website Migration Guide · Planning

How to Plan a Site Migration Without Losing Rankings

Most ranking loss in a migration comes from poor planning. Here are the planning steps that protect your SEO, how long a migration typically takes, and the best time to do it, all in one place.

Updated: July 2026
Written by: Andrew Odgers, Managing Director
Reading time: 8 minutes
The short answer

You plan a site migration by auditing the current site, setting benchmarks, mapping every old URL to its new one, preparing correct 301 redirects, preserving content and metadata, testing on staging, and monitoring closely afterwards. Timeframes vary with size and complexity: planning typically takes a few weeks to a couple of months, the switch can be quick, and search engines usually take several weeks to re-process, so these are typical ranges rather than guarantees. The best time is a quieter trading period away from your busiest season. Good planning is what protects rankings, because most problems come from missed redirects or rushed execution.

The plan protects the rankings

How to plan it, and the key steps

You plan a site migration without losing rankings by auditing the current site, setting benchmarks, mapping every old URL to its new one, preparing correct 301 redirects, preserving content and metadata, testing on staging, and scheduling careful monitoring afterwards. A thorough plan means nothing important is missed and search engines can follow the change cleanly; because most ranking loss comes from poor planning, a structured plan is the single biggest thing that protects rankings through a migration. The key steps in planning a migration are auditing and benchmarking the current site, creating a complete URL map, preparing 301 redirects, preserving content, titles and metadata, testing thoroughly on a staging environment, launching carefully, and monitoring closely to catch and fix any issues. Each step reduces risk and builds on the last, from the site audit and URL mapping through 301 redirects; because a migration touches so many parts of a site, following these steps in order keeps the process controlled and safe. Working through the site migration SEO checklist alongside your plan helps make sure nothing is overlooked.

P 01

Audit and benchmark

Know your starting point.

P 02

Map and redirect

Every URL accounted for.

P 03

Test and monitor

Staging first, watch closely after.

How long it takes, timing and why planning matters

How long a migration takes, the best time, and why planning is everything

How long a site migration takes varies with the size and complexity of the site, but planning and preparation typically take from a few weeks to a couple of months, the switch itself can be quick, and search engines then usually take several weeks to fully re-process the change. Larger, more complex sites take longer at every stage; because timeframes depend on the specifics, these are typical ranges rather than guarantees, and rushing any stage tends to increase the risk. The best time to do a migration is a quieter trading period away from your busiest season and major campaigns, so any temporary fluctuation has less business impact and there is time to monitor and resolve issues. Mid-week launches can also give more support availability than weekends; because timing affects how much any short-term dip matters, choosing a lower-stakes window is an important part of planning, as covered in when to migrate. Planning is so important because most migration problems come from missed redirects, lost content or rushed execution, all of which good planning prevents, so a thorough plan is what protects rankings and traffic. Planning turns a risky change into a controlled process with checks at every stage. Because careful preparation is the difference between a smooth migration and a damaging one, planning is the most important part of the whole project.

SEO done properly, from £350 a month

A plan that protects
everything you have earned.

The difference between a smooth migration and a damaging one is nearly always the plan. We audit, benchmark, map every URL, prepare redirects, preserve your content and metadata, test on staging and monitor closely, so the change is controlled at every stage and your rankings are protected.

Everything included in your plan:

Google Maps optimisation Full website management Local SEO campaign AI optimisation (GEO) Facebook, Instagram and LinkedIn Quarterly audits Monthly reporting
£350 per month

One clear retainer. No setup fee.

Frequently asked

Planning a site migration

How do you plan a site migration without losing rankings?
You plan by auditing the current site, setting benchmarks, mapping every old URL to its new one, preparing correct 301 redirects, preserving content and metadata, testing on staging, and scheduling careful monitoring afterwards. A thorough plan means nothing important is missed and search engines can follow the change cleanly. Because most ranking loss comes from poor planning, a structured plan is the single biggest thing that protects rankings through a migration.
What are the key steps in planning a migration?
The key steps are auditing and benchmarking the current site, creating a complete URL map, preparing 301 redirects, preserving content, titles and metadata, testing thoroughly on a staging environment, launching carefully, and monitoring closely to catch and fix any issues. Each step reduces risk and builds on the last. Because a migration touches so many parts of a site, following these steps in order keeps the process controlled and safe.
How long does a site migration take?
It varies with the size and complexity of the site, but planning and preparation typically take from a few weeks to a couple of months, the switch itself can be quick, and search engines then usually take several weeks to fully re-process the change. Larger, more complex sites take longer at every stage. Because timeframes depend on the specifics, these are typical ranges rather than guarantees, and rushing any stage tends to increase the risk.
What is the best time to do a migration?
A quieter trading period away from your busiest season and major campaigns is usually best, so any temporary fluctuation has less business impact and there is time to monitor and resolve issues. Mid-week launches can also give more support availability than weekends. Because timing affects how much any short-term dip matters, choosing a lower-stakes window is an important part of planning.
Why is planning so important for a migration?
Because most migration problems come from missed redirects, lost content or rushed execution, all of which good planning prevents, so a thorough plan is what protects rankings and traffic. Planning turns a risky change into a controlled process with checks at every stage. Because careful preparation is the difference between a smooth migration and a damaging one, planning is the most important part of the whole project.