Most SEO companies treat migration support as a project-based engagement with a fixed fee rather than a monthly retainer. A migration has a clear start and end, so it is scoped, quoted, and invoiced on its own. The fee covers the SEO work that protects rankings and traffic when a site changes its platform, domain, structure, or hosting. Because the scope of that work varies so widely, published figures for project-based SEO and migration support in 2026 span a broad range, often from a few thousand dollars to well into five figures for large or complex sites. Treat any number you see as a starting point, not a quote. The only reliable figure is one an agency gives you after reviewing your actual site.
What you are paying for
The fee is not for “moving the website.” Developers or a hosting provider usually handle the technical move. The SEO company is paid to make sure search rankings and organic traffic survive that move. That work typically includes a pre-migration audit and crawl, a complete URL inventory, redirect mapping, metadata and structured data review, internal link checks, and analytics and tracking continuity. It also includes testing before launch and monitoring after launch. You are paying for the planning and quality assurance that prevents a drop in traffic, not for the migration itself.
What drives the price
Several factors explain why one quote is far higher than another.
Site size is the largest driver. A small brochure site with a few dozen pages is quick to inventory and map. A site with thousands of URLs, multiple content types, categories, and media files takes far more time, and every page adds redirects, testing, and validation work.
Migration type matters next. Moving to a new content management system, changing domains, consolidating several sites into one, switching to HTTPS, or restructuring the URL hierarchy each carry different levels of risk and effort. A platform change with a new URL structure is more involved than a same-structure host change.
Redirect mapping is often the most labor-intensive part. Every old URL must be matched to the correct new destination so that link equity and rankings carry over and visitors do not hit error pages. On large sites this can require significant manual work, even with tools to assist.
Pre and post-launch QA also affects the fee. Thorough testing before launch and close monitoring afterward, including crawl checks, redirect verification, indexing review, and traffic comparison, all take time. Industry guidance suggests QA can account for a meaningful share of a migration project’s total cost. Cutting it lowers the upfront price but raises the risk of a costly traffic loss later.
Other factors include the condition of the current site, the quality of available documentation, how much coordination is needed with developers, and whether the work is rushed.
How quotes are usually structured
Expect a fixed project fee tied to a defined scope and deliverables. A clear proposal should list the number of URLs covered, the specific tasks included, who is responsible for each step, and the testing performed before and after launch. Some agencies break the work into phases, such as a planning and audit phase, a launch-support phase, and a post-launch monitoring phase, each priced separately. Post-launch monitoring is sometimes offered as an add-on for a set number of weeks, since issues can surface days after launch.
Questions to ask before you commit
Ask whether the quote is for the whole project or for a single phase. Ask how many URLs are included and what happens if the count changes. Confirm whether redirect mapping is done manually, with tools, or both, and who builds the final redirect file. Ask what pre-launch and post-launch QA is included and for how long after launch they will monitor the site. Ask what is explicitly excluded, such as content rewriting or new design work. A vague quote with no URL count or task list usually signals that the scope has not been thought through, which often leads to change orders later.
A migration is one of the highest-risk events for organic traffic, so the goal is not the lowest price but a clearly scoped fee that includes real testing. The right number depends entirely on your site, so get a written quote based on a review of it.