Website Migration Cost Guide: What to Budget in 2026

"How much will it cost to migrate our website?" is one of the hardest questions to answer without context, because a migration can mean anything from re-pointing DNS to a new host over a weekend, to rebuilding a 5,000-page e-commerce catalog on a new platform with a full URL-structure change. The price gap between those two scenarios is easily 100x. This guide breaks migration cost into the components that actually drive the invoice so you can build a realistic 2026 budget instead of reacting to a surprise number.

Throughout, we use blended US agency rates in the $75-$200/hour range as a reference point. eSEOspace bills at $80/hour, which sits at the affordable end of that band while still delivering senior work. Wherever you see a dollar range below, assume a professional US-based team; offshore rates run lower but typically shift QA and rework costs onto you later.

Below you will find ballpark ranges by migration type, the seven variables that move price the most, a line-item budget checklist you can hand to finance, and the recurring costs people forget until renewal season.

What "migration" actually means (and why it changes the price)

Vendors quote wildly different numbers because the word covers at least five distinct projects. Scope your migration into one of these buckets before you ask for a quote:

• Hosting/server migration - same site, new infrastructure (e.g., shared host to a VPS or cloud). Mostly DevOps: $500-$4,000.
• Platform re-platform - same content, new CMS or framework (WordPress to Next.js, Magento to Shopify). This is the most common and most variable: $5,000-$60,000+.
• Domain/URL migration - changing the domain or URL structure, with or without a redesign. The engineering is small; the SEO risk is large.
• Redesign + migration - new platform and new design at once. Add the design and content budget on top of the re-platform cost.
• Content/data migration only - moving posts, products, users, and media into an already-built shell. Priced per record volume and cleanliness.

The single most important cost signal is whether URLs change. A like-for-like move where every URL stays identical is cheap and low-risk. A move that reshuffles URLs pulls in redirect mapping, crawl budget management, and post-launch monitoring - the parts of a professionally managed website migration that protect the organic traffic you already paid to earn.

2026 cost ranges by project size

Use these as planning anchors, not quotes. They assume a US agency, redirect mapping, QA, and launch support included.

• Small brochure site (1-25 pages), same URLs: $1,500-$6,000. A few days of build/migration plus testing.
• Small-to-mid site with redesign (25-75 pages): $8,000-$25,000. Design, content reflow, and redirect work dominate.
• Blog/content site (100-1,000 posts): $6,000-$30,000. Cost scales with data cleanliness and the number of custom post types and taxonomies.
• E-commerce (100-2,000 SKUs): $15,000-$75,000. Product data, variants, payment/tax integrations, and order history are the expensive parts.
• Enterprise / high-traffic (5,000+ pages, integrations): $75,000-$300,000+. Multiple environments, staged rollout, and dedicated QA.

At an $80/hour rate, a typical mid-market re-platform of ~$18,000 represents roughly 225 hours: discovery and audit, environment setup, template build, content/data migration scripts, redirect mapping, QA across breakpoints and browsers, and two to four weeks of post-launch monitoring. When a quote looks suspiciously cheap, it is almost always skipping the redirect map or the QA - the two line items that cause traffic loss when omitted.

Also watch how the range widens as complexity compounds. Two variables interacting - say a URL change and a redesign - do not add linearly; they multiply, because every new template must be re-mapped and re-tested against the new information architecture. This is why a client who expected a $12,000 project sometimes sees $28,000: the redesign was scoped separately from the migration, and nobody priced the overlap. Insist on a single scope that names both, or the seams between them become your cost overrun.

The seven variables that move the number most

Two sites with the same page count can differ 5x in migration cost. These are the drivers:

• 1. URL changes. Preserving URLs is nearly free; changing them adds redirect mapping (often 5-40 hours) plus monitoring.
• 2. Data volume and cleanliness. 10,000 tidy records migrate faster than 500 messy ones full of inline styles, broken shortcodes, and orphaned media.
• 3. Custom functionality. Membership gates, calculators, booking flows, and portals often must be rebuilt, not moved. This is where custom development and CRM integration work can dominate the budget.
• 4. Integrations. Payment gateways, ERPs, marketing automation, and analytics each need reconnection and re-testing.
• 5. Design change. Migrating the existing design is far cheaper than designing a new one during the move.
• 6. SEO scope. A migration that includes metadata preservation, schema, internal-link repair, and rank monitoring costs more but protects revenue.
• 7. Content freeze vs. live editing. Sites that cannot pause publishing need delta-sync tooling, which adds engineering time.

A line-item budget checklist

Break the estimate into these components so nothing is hidden in a single lump sum. Ask every vendor to price against this list:

• Discovery & audit - crawl the current site, inventory URLs, catalog integrations and custom features.
• Content/data migration - scripts or manual entry to move posts, products, users, media.
• Design/template build - new or ported templates and components.
• Redirect mapping & implementation - old URL to new URL, 301s tested at scale.
• SEO preservation - titles, meta, canonicals, schema, sitemaps, robots.txt.
• Integrations & forms - payments, CRM, email, analytics reconnected and tested.
• QA & cross-browser testing - functionality, responsive layouts, accessibility, performance.
• Launch & DNS cutover - staged deploy, TTL lowering, rollback plan.
• Post-launch monitoring - crawl errors, rankings, 404s, Search Console, for 2-4 weeks.
• Contingency - budget 10-20% for the unexpected; you will use some of it.

If a proposal collapses these into one number, ask for the breakdown anyway. The distribution tells you where the real work is and whether the vendor understands the risk profile of your specific site.

Hidden and recurring costs people forget

The build invoice is only part of total cost of ownership. Budget for these too:

• New hosting and CDN - a modern stack may cost more (or less) per month than your old host; confirm before you commit.
• Premium plugins, themes, and licenses - annual renewals that do or do not transfer.
• SSL, security, and backups - often bundled, sometimes not.
• Content rework - copy that has to be rewritten or reformatted for the new templates.
• Staff time - your team's hours for review, approvals, and testing are a real cost even if they are not invoiced.
• Post-launch fixes - reserve budget for the two weeks after cutover, when edge cases surface.
• Temporary ranking dip - even a clean migration can cause a short-term traffic wobble; plan for a possible revenue impact during recovery.

If you are also modernizing the stack, factor the ongoing maintainability benefits of a current framework into the ROI calculation - a well-built custom website development foundation lowers future change costs, which is easy to omit from a one-time migration spreadsheet.

How to control cost without cutting corners

You can trim a migration budget safely, and you can trim it dangerously. Safe savings: preserve URLs, freeze content during the move, reuse the existing design, migrate in phases, and clean your data before handoff so the vendor is not billing to untangle it. Dangerous savings: skipping the redirect map, cutting QA, or dropping post-launch monitoring - each of these can cost you far more in lost organic traffic than you saved on the invoice.

The best cost control is a tight scope document. Decide up front whether this is a like-for-like move, a re-platform, or a redesign - mixing them mid-project is the number-one source of overruns. Get a written redirect strategy, a defined content freeze window, and a rollback plan before work starts. A vendor who insists on those artifacts is protecting your budget, not padding it.