Proprietary CMS to WordPress Migration Services

A lot of businesses end up on a custom-built CMS because an agency built it years ago, or someone on staff put it together before moving on. That's fine until the person who understood it is gone too. When that happens, we move you to WordPress, where support isn't one company's (or one developer's) problem to hold hostage.

700+

WordPress sites launched since 2002
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Sites hosted and maintained
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Across 320+ verified reviews

Why WordPress

Why WordPress after proprietary CMS

Every migration should end with a site that's better than what you had, not just different. Here's what WordPress gives you that proprietary CMS doesn't.

No more single-vendor lock-in. WordPress is open source; anyone can work on it.
Your team can update the site without going through the original agency.
Real SEO tooling. Every lever the proprietary CMS hid is standard.
Easier hiring. Every dev knows WordPress; nobody knows your custom stack.
Lower total cost. No license, no vendor invoice, no waiting on their roadmap.

Why us

Why teams leave a proprietary CMS

Custom-built systems can work fine while the original team is still around. The trouble starts once that stops being true, and it usually does eventually.

Nobody else can support it. A custom CMS is understood by whoever built it and almost no one else. If that agency disappears, gets acquired, or stops answering calls, you're stuck.
No documentation, or outdated documentation. Custom systems rarely get documented the way a widely used platform does, so every fix depends on institutional knowledge that may or may not still exist.
You're the only client on that codebase. Unlike WordPress, where thousands of developers troubleshoot the same core software, a proprietary CMS has a support pool of exactly the people who built it, and that pool tends to shrink over time.
Upgrades and security patches are ad hoc. Without a broader community maintaining the platform, updates happen only when someone remembers to do them, or when something breaks in front of a customer.
You have no room to negotiate on price. When one vendor is the only one who can touch your site, they can charge what they want. That's not a knock on them, it's just how vendor lock-in shakes out.

Services

What we handle in the migration

Content extraction from whatever's there. We assess your custom CMS's database and file structure, then pull content out directly, however it's stored.
Feature-by-feature rebuild. We inventory every custom feature your current site has and rebuild each one in WordPress using a plugin or direct development, so nothing gets quietly dropped.
URL mapping and 301 redirects. We map your existing URLs to WordPress and redirect everything, protecting whatever search equity your site has built up over the years.
SEO preservation. Titles, meta descriptions, and alt text move over intact, and we clean up anything that was quietly holding your rankings back.
Design rebuild. Your current design gets rebuilt as a proper, maintainable WordPress theme, matching what you have now or improving on it if you want a refresh.
Documentation, finally. Once you're on WordPress, you're on a platform with real documentation and a massive support community, so you're never back in this position again.

Process

How we handle proprietary-CMS-specific gotchas

Every proprietary CMS is different, and that's the core challenge. There's no standard playbook the way there is for Wix or Squarespace, so the first real step is a technical audit: we get access to the database and codebase, figure out how content is actually structured, and reverse-engineer a migration path specific to your system. This takes longer upfront than a migration from a known platform, but it's the only real way to do it.

The second challenge is separating real functionality from legacy cruft. Custom systems built over years often carry features that made sense at the time but nobody actually uses anymore. We review usage with you during the audit and only rebuild what your business actually needs, instead of recreating everything out of habit.

The third is that we genuinely can't quote a timeline off the top of our head. We've seen "simple" custom CMSs turn out to be a tangle of undocumented dependencies, and we've seen scary-looking ones turn out to be pretty clean underneath. We won't know which one you have until we look.

Step zero

Start with a free scoping call

Before we quote anything, we hop on a free 20-30 minute call. We look at your current site together, ask a few questions, and give you a real timeline and price -- not a range pulled out of the air. If we're not the right fit, we'll say so on that call. No hard sell.

Book the scoping call

Timeline & investment

What to expect

We'll give you a real number once we've actually looked at your site, not a guess. Every quote comes after a free 20-30 min call, and for a proprietary CMS that usually includes a short technical audit before we can commit to a firm timeline.

Timeline

✓Smaller sites: 3-4 weeks
✓Mid-sized sites: 4-6 weeks
✓Larger or highly customized systems: 6+ weeks

Investment

✓Migrations start at $3k. Simple brochure sites usually land here.
✓Larger or custom projects go up from there. We quote after we look at your site, not before.
✓Everything's fixed-fee. No hourly billing, no surprises.

Is this right for you?

Who WordPress migration is (and isn't) a fit for

We'd rather turn down a bad fit than sell you the wrong thing. Here's the straight cut.

You're a fit if

✓You're locked into a vendor tool and want off before they raise prices or discontinue it
✓The agency or developer who built your CMS is gone, unresponsive, or was acquired and support dried up
✓You have no ownership of the code and no real export path
✓You're running an aging internal-built CMS with no active maintainers left on staff
✓The tool is holding back your marketing or SEO and nobody can fix it

You probably don't need this if

✗You have deep custom business logic tied to that CMS that WordPress genuinely can't replicate
✗You've got active vendor support and the tool genuinely still fits your workflow
✗You have tight regulatory or compliance requirements that your vendor specifically handles for you

If that's you, we'll say so on our first call. No hard sell.

Good to know

FAQs

Our old agency is gone and nobody understands our current CMS. Can you still migrate it?

Yes. It usually starts with a technical discovery phase where we get into the database and codebase ourselves to figure out how everything works, since there's no one left to ask.

How do you know what to migrate if there's no documentation?

We review the codebase and database directly and talk to your team about what the site actually needs to do day-to-day. Real usage tells us more than any documentation would anyway.

How long does a proprietary CMS migration take?

It varies more than any other migration we do, usually 4 to 12+ weeks. The source system is unknown until we audit it, so we won't give you a firm number until we've actually looked.

Will we lose custom features that were built specifically for us?

Only the ones that turn out not to be worth keeping. We review what's actually used with your team and rebuild the functionality that matters using WordPress plugins or custom development.

What if we don't have login access or admin credentials anymore?

It happens more than you'd think, especially with internal tools built by someone who's since left. We'll work with your host or server admin to get access another way, whenever that's possible.

Keep exploring

Ready to leave your proprietary CMS?

Book a free 20-30 min call. We'll look at your site, tell you what the migration would involve, and quote a real number.

Get A Proposal Call (630) 296-6932

Migrate from a proprietary CMS to WordPress