The verdict in three sentences
A WordPress to Next.js migration in New York costs between 6,000 and 18,000 USD in 2026 depending on page count and feature complexity. The gain is concrete: load time cut threefold, Core Web Vitals green, a sharply reduced security attack surface (no more vulnerable plugins), and lower hosting costs. The single risk to manage is SEO: without an exhaustive redirect plan, you can lose 30 to 50 % of traffic — hence the importance of a vendor who audits before coding.
WordPress vs Next.js comparison
The two technologies serve different needs. For a B2B site targeting performance and security, Next.js wins on most criteria.
| Criterion | WordPress | Next.js |
|---|---|---|
| Average load time | 3.5 - 5 s | 0.8 - 1.5 s |
| Core Web Vitals score | Often amber/red | Green |
| Security | Plugins = attack surface | Reduced surface |
| Hosting cost/month | 25 - 100 USD | 0 - 50 USD |
| Non-tech content editing | Excellent | Good (with headless CMS) |
| Development cost | Lower | Higher |
Next.js is not always the right call: for a blog managed daily by a non-technical team with no extreme performance requirement, WordPress remains relevant. Migration is justified when speed, security and SEO become strategic.
Migration cost by site size
Budget depends mostly on the number of templates to recode and integrations to reconnect. Here are the tiers observed in New York in 2026.
| Site size | Pages / templates | Cost USD | Timeline |
|---|---|---|---|
| Simple brochure | 8-12 pages, 4 templates | 6,000 - 9,000 | 5-7 weeks |
| Corporate | 20-40 pages, blog, multilingual | 10,000 - 14,000 | 8-12 weeks |
| Complex | Client area, advanced forms | 14,000 - 18,000 | 12-16 weeks |
| Bespoke | E-commerce, ERP integrations | 18,000+ | 16+ weeks |
On top of these comes a headless CMS (Sanity, Strapi) if the team must keep editing content without a developer: budget 1,000 to 3,000 USD for setup, plus a possible monthly subscription.
Measured Core Web Vitals gains
Here is the typical impact of a well-run migration for a B2B corporate site in New York, measured before and after on mobile.
| Metric | Before (WordPress) | After (Next.js) | Change |
|---|---|---|---|
| LCP (loading) | 4.3 s | 1.2 s | -72 % |
| INP (interactivity) | 320 ms | 90 ms | -72 % |
| CLS (stability) | 0.28 | 0.02 | -93 % |
| Page weight | 3.8 MB | 0.9 MB | -76 % |
| Lighthouse score | 47 | 96 | +104 % |
These gains directly affect SEO and conversion: a site that drops below 1.5 s load time typically sees mobile bounce rate fall by 15 to 25 %, which matters especially on slower mobile connections.
Mini case study
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David, director of a 40-person IT services firm in Manhattan, suffers from a slow WordPress (4.3 s) and two plugin-related security incidents in one year. He approves a Next.js migration at 12,400 USD, Sanity CMS and redirect plan included.
Result after migration: 1.2 s load time, Lighthouse score of 96, and zero traffic loss thanks to 210 tested 301 redirects. Over 6 months, organic traffic grows 38 % and the contact form conversion rate rises from 1.8 % to 2.9 %. With 1,900 monthly visits, that is roughly 21 leads/month versus 13 before, or 8 extra leads. At an average deal of 5,000 USD and 20 % conversion, the return covers the investment in under a fully active quarter. Bonus: his hosting costs drop from 90 to 24 USD/month.
FAQ
How much does a WordPress to Next.js migration cost in New York in 2026?
Between 6,000 and 18,000 USD by size: 6,000-9,000 for a brochure, 10,000-14,000 for a corporate site, 14,000-18,000 for a complex site with a client area.
Does migration lose rankings?
Not if done well: with an exhaustive 301 redirect plan and a before/after comparative crawl, traffic stays stable. Without that plan, loss can reach 30 to 50 %.
Will the team still be able to edit content?
Yes, via a headless CMS (Sanity, Strapi) offering a friendly editing interface. Budget 1,000 to 3,000 USD for setup on top of development.
What real performance gain to expect?
A load time cut threefold on average (from 4 s to 1.2 s) and a Lighthouse score rising from 45-50 to over 95. The effect is very visible on slow mobile connections.
Is Next.js always the right choice?
No: for a non-strategic blog edited daily with no speed requirement, WordPress remains suitable. Next.js wins when performance, security and SEO become business stakes.
Let's scope your project. Send us your current WordPress site URL, its page count and your integrations, and we will audit and cost the migration. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
