Most WordPress-to-Webflow migrations that go wrong fail because the agency doing the work treated migration like a standard development project, scoped it accordingly, and missed the disciplines that make migration different from a new build.

Deciding to move from WordPress to Webflow is usually the easier part. The decision about who does it is where the real risk sits. After completing over 100 enterprise migrations, Edgar Allan has seen every failure mode, and almost all of them are process problems. The criteria below are what we'd tell a marketing director to use when evaluating any agency for this work, including us.

Webflow migration experience isn’t the same as Webflow experience

A large portion of the Webflow agency market can build a site in Webflow. Far fewer have done migrations at scale, and the distinction matters more than most buyers realize when scoping a project.

A new Webflow build mostly starts with a blank canvas; migration starts with a full inventory of every URL, redirect, integration, and structured data implementation that needs to survive the move. The technical skills required to execute that cleanly, including URL mapping, 301 redirect strategy, CMS schema translation from WordPress custom post types to Webflow CMS collections, and parallel environment management, are developed through doing migrations, not through building net-new sites.

Key question: When you're evaluating an agency, ask how many WordPress-to-Webflow migrations they've completed and what the content volume and structure looked like on the most complex projects they've run. The answer will tell you quickly whether you're talking to someone who has navigated real migration complexity or someone who has done a handful of smaller projects.

Edgar Allan has completed over 100 enterprise migrations, ranging from focused two-week engagements to 12-month projects involving thousands of pages, multiple content types, and complex CMS architectures. Both require the same foundational disciplines. The difference is scale, not kind.

A documented pre-migration audit is the clearest signal of a capable partner

An agency that skips the audit phase cannot accurately scope the project, and whatever gets underscoped will surface after launch when it costs more to fix.

A capable migration partner starts every project with a full site audit before touching any design or build work. You can’t scope a migration you haven't fully inventoried, and the gaps that get missed in a cursory review are the ones that create ranking loss, broken redirects, and CMS mismatches post-launch.

The audit should cover every URL on the current site, including orphaned pages and those not surfaced by standard navigation, every existing redirect chain, all metadata, structured data implementations, and third-party integrations that need to be re-platformed or replaced in Webflow's ecosystem.

Key question: Ask any agency you're evaluating for a sample audit deliverable or ask them specifically what tool they use for the crawl. We use Screaming Frog plus manual crawl verification on anything above a certain complexity threshold. The specific tool matters less than whether there's a documented, deliverable-based process at all. If there isn't, that's the answer.

SEO continuity should be a named deliverable from day one

The most common concern we hear from marketing directors evaluating a WordPress-to-Webflow migration is ranking loss. It's a legitimate concern, but is preventable when SEO continuity is treated as a parallel workstream rather than a final step.

What that looks like in practice: 

• Redirect mapping validated before go-live, not assembled the week of launch. 
• Metadata reviewed and approved by the client, not auto-populated from the old site and assumed correct. 
• Canonical structure verified. 
• Structured data re-implemented where it existed. 
• Core Web Vitals benchmarked before and after, with a defined threshold for what triggers a delay.

Key question:  If you ask a prospective agency how they handle SEO continuity and the answer centers on redirects and metadata alone, push further. Ask specifically about structured data, canonical tags, and post-launch Search Console validation. 

An agency that handles these as a routine part of every migration will have concrete, specific answers. One that treats them as edge cases will give you a general response about best practices. 

When we migrated Walker & Dunlop from their legacy stack to Webflow, the project launched on time, within budget, and delivered 150% overall traffic growth and a 30% increase in organic search traffic. That result doesn't happen without SEO continuity managed as a parallel workstream from the start.

Enterprise content complexity requires direct, verifiable experience

A 20-page marketing site and a 2,000-page content library are not the same migration. The complexity differences are real, and they show up in places that don't surface until you're mid-project: inconsistent page templates, legacy WordPress shortcodes embedded in body content, category and tag taxonomies that don't map cleanly to Webflow CMS collection structures, embedded media that requires remapping, multilingual content requiring parallel CMS architecture.

Key question: Ask specifically about the largest content migration an agency has completed and what the content structure looked like. If the examples they give are under 200 pages with a single content type, and your migration involves 10 custom post types and 1,500 pages, you need to know that before you sign a contract.

For context on what migration complexity actually looks like at scale, our article on enterprise WordPress to Webflow migration timelines documents the variables that drive project length across our client base, from content volume to client-side decision speed.

The best migration agencies will ask about your internal decision structure

This one runs both directions. A well-run migration project requires an empowered owner on the client side, someone who can make content decisions without committee approval, approve redirect maps on a defined timeline, and sign off on metadata changes without routing everything through legal.

Key question: The agencies that have done this work at scale know that client-side decision speed is the largest single variable in migration timelines, more than content volume, more than technical complexity. A good agency will surface this in discovery and flag it as a risk if your internal structure doesn't support it. An agency that never asks about your decision-making structure is telling you something about how it manages projects.

If you want to understand how we think about this from our own process, we’ve documented how to migrate from WordPress to Webflow and covered the internal mechanics of how we structure client collaboration across migration phases.

Post-launch validation is part of the migration, not a separate engagement

Migration work doesn't end at go-live. The 30 days after launch are when redirect chains surface that weren't caught in staging, when crawl anomalies appear in Search Console, and when CMS collection edge cases get discovered in production because the live environment handles content differently than a preview build.

Key questions:

• What does the post-launch support window look like, and what’s included?
• Is post-launch Search Console verification part of the engagement or billed separately?
• How are redirect issues discovered after launch handled?

A firm handoff at go-live with no structured validation period is a sign the agency is treating migration as a build project with a finish line. Migration is a continuity project and the finish line is confirmed SEO stability, not deployment.

Webflow Enterprise partnership signals capacity for complex, high-stakes work

For enterprise-scale migrations, Webflow Enterprise partnership is a meaningful signal when evaluating agencies. It doesn't guarantee execution quality on its own, but it indicates the agency has met Webflow's own criteria for handling complex implementations and maintains a direct line to Webflow's enterprise team when edge cases require platform-level support.

Edgar Allan is a three-time Webflow Enterprise Agency of the Year. For large-scale migrations, that relationship matters practically: when a CMS behavior in production doesn't match staging, when an integration requires platform-level documentation, when a client's site architecture requires a conversation with Webflow's product team, that access changes how quickly issues get resolved.

Key question: Ask whether the agency is a Webflow Enterprise Partner and, more specifically, what that means for how your project would be handled. The answer matters.

Questions to bring to an agency discovery call

These are the questions that separate capability from a good pitch. Use them in any discovery conversation before you select a migration partner.

1. How many WordPress-to-Webflow migrations have you completed, and what was the largest by content volume and content type complexity?
2. Walk me through your pre-migration audit process. What does the deliverable look like, and what tool do you use for the crawl?
3. How do you handle SEO continuity? Specifically: who owns redirect mapping, when is it validated relative to go-live, and what does post-launch Search Console review look like?
4. What's the most complex content structure you've migrated from WordPress? How did you handle custom post types, taxonomy mapping, and legacy shortcodes?
5. Who owns the project on your side from audit through post-launch, and how does the client-side team need to be structured for this to run well?
6. What does your post-launch validation period look like, and what's included in the base engagement vs. billed separately?
7. Are you a Webflow Enterprise Partner, and what does that mean concretely for how edge cases get resolved on my project?

If you're early in the evaluation process and still weighing the platform decision itself, our comparison of Webflow vs. WordPress covers the tradeoffs in detail. And if you want to understand what the agency selection landscape looks like across the broader Webflow partner ecosystem, our data-backed Webflow agency rankings provide the reference point.

If you're ready to talk about your migration specifically, start here.