WordPress vs custom site: why (and when) to migrate for your SMB
43% of websites worldwide run on WordPress. You're probably on it too. For 80% of cases, that's fine. But there's a precise threshold where WordPress becomes more expensive, riskier, and slower to evolve than a custom site. Here's how to tell if you've crossed it.
Why WordPress is popular (and why it deserves it)
WordPress won because it solves 3 problems well:
- Low initial cost: WordPress + theme + WooCommerce = $1,500-$4,000 setup.
- Autonomy: you can edit your own text via admin (in theory).
- Massive ecosystem: a plugin exists for almost anything.
For a low-change business site with no complex logic and modest traffic: WordPress works. I'm not anti-WordPress.
The real hidden costs nobody calculates
Mandatory maintenance
WordPress core, themes and plugins need a documented update and backup process. Delayed maintenance increases exposure to known vulnerabilities; the actual risk depends on the stack, hosting, access controls and patching discipline. Patchstack's annual report documents thousands of vulnerabilities reported across the WordPress ecosystem in 2024.
Decent maintenance plan: $80-$250 CAD/month = $960-$3,000/yr. Over 5 years: $5,000-$15,000 just to keep the site online.
Plugin-degraded performance
Performance depends on implementation, images, scripts and hosting for both WordPress and custom sites. Compare measured pages under the same conditions.
Real impact: Google penalizes the ranking of slow sites (Core Web Vitals since 2021 — see Google Search Central). You lose SEO ranking without knowing it.
Hosting at scale
Choose hosting from measured load, caching, reliability and support needs, not a universal visitor threshold.
Accumulating paid plugins
Security (Wordfence Premium): $99/yr. Cache (WP Rocket): $59/yr. SEO (Yoast Premium): $99/yr. Backups: $70/yr. Advanced forms: $159/yr. Total: $500+/yr in plugins, growing fast.
The honest 5-year math
| Cost | WordPress | Custom (React/Laravel) |
|---|---|---|
| Initial setup | $2,500 | $6,500 |
| Maintenance × 5 yrs ($130/mo) | $7,800 | $0 (or $500/yr if needed) |
| Hosting × 5 yrs | $1,800 ($30/mo) | $600 ($10/mo Netlify) |
| Premium plugins × 5 yrs | $2,500 | $0 |
| Forced rebuild (plugin compat) | $3,000 | $0 |
| Total 5 yrs | $17,600 | $9,600 |
This illustrative comparison assumes $500/year maintenance for custom development: $9,600 over five years, or $7,100 without that optional service. Real costs vary; required security maintenance must still be planned.
Unlike the market above (initial setup $2,500-$6,500 + monthly fees), PrimeDev's Business Site bundles everything into a single price: $6,500-$12,000 all-in, no hidden setup fees, code delivered, 100% ownership. That's how I make custom accessible without pricing traps.
When WordPress is still right
- You publish content frequently (active blog, magazine, media)
- Your team edits the site daily without a dev
- You need a specific plugin that doesn't exist custom (e.g. LearnDash LMS)
- Strict initial budget, accepting recurring costs
When to migrate to custom
- 5,000+ monthly visitors (performance becomes critical)
- Hacked at least once
- Handling transactions or sensitive data (Quebec Law 25)
- Measured mobile usability or performance problems remain after targeted optimization.
- Paying $200+/month in maintenance and plugins
- Want modern AI integrations (chatbot, voice agent, scoring)
Starting with a $3,000 budget and the site barely changes: stay on WordPress, get maintenance, sleep well. Established 2-3 years with real revenue from your site, want to level up: custom is probably the best investment you'll make this year.
How to migrate without losing SEO
4 rules for a clean migration:
- Keep the same URLs exactly. Current page at
/services/kitchen-renovation/? New one must match. Else: 301 redirect. - Preserve useful content and search intent. Improvements are possible, but document changes and monitor performance after migration.
- Keep title and meta description tags on each page. Optimize only after the new site is live and stable.
- Export Search Console + Analytics before migration. You'll know which pages drive traffic and which can be dropped.
Keep redirects, content mapping and a monitoring plan. Traffic can fluctuate after migration; neither the size of a decline nor the recovery date is guaranteed.
Hesitating on a WordPress migration?
Free 10-min Loom audit: I look at your site, tell you honestly if migrating is worth it for your specific case.
Get my free audit →To sum up
Compare total cost, autonomy, maintenance and required features over the same period. Neither WordPress nor custom development is automatically the better option.
The right choice depends on your stage. Not your site's age, but the revenue it generates and how often you evolve it.