The verdict in three sentences
For a 60-consultant strategy firm in New York, migrating a heavy WordPress site to Next.js and a headless CMS costs USD 10,000 to 17,500 in 2026 (about EUR 9,000 to 16,000), plus roughly USD 1,600 to move 180 articles with 301 redirects. The main gain is twofold: an LCP dropping from 4.2 s to under 1.8 s and the end of security alerts tied to 38 plugins. Plan 8 to 12 weeks of project time and USD 165 to 330 per month of maintenance, often less than unplanned WordPress fixes.
Why a 38-plugin WordPress becomes a risk
Every plugin adds server-side code, database queries and attack surface. With 38 plugins, a firm faces several critical updates a month on average, some of which break layouts or forms. The security alerts are not trivial: a compromised consulting firm website that redirects to spam or exposes contact forms damages a reputation built on trust.
Slowness also costs opportunities. A 4.2 s LCP puts the site in the "needs improvement" Core Web Vitals band, which weighs on rankings for thought leadership content, and decision makers opening an article from LinkedIn on mobile leave before the page renders. Next.js serves static or cached pages from a CDN and ships only the JavaScript that is strictly needed.
The cost of migration in 2026
| Item | Range | Detail |
|---|---|---|
| Custom Next.js front end | USD 6,500 to 11,000 | Design carried over or light refresh, reusable components |
| Headless CMS (Sanity, Strapi or Payload) | USD 2,200 to 4,400 | Content modelling, editorial roles, preview |
| Moving 180 articles and 301 redirects | +USD 1,600 | Import script, URL checks, redirect map |
| Forms, newsletter, CRM | USD 1,100 to 2,200 | HubSpot or equivalent connection |
| SEO audit before and after | USD 900 to 1,600 | Rank tracking, Search Console |
| Hosting (Vercel or equivalent) | USD 20 to 65 per month | Global CDN, automatic deployments |
| Maintenance | USD 165 to 330 per month | Minor changes, monitoring, updates |
| Lead time | 8 to 12 weeks | Including 2 weeks of QA and content migration |
The full budget therefore sits around USD 11,500 to 19,000. The spread depends mostly on design (faithful carry-over or refresh) and content complexity: consultant profiles, case studies, publications filterable by industry.
Optimised WordPress or Next.js: the comparison
| Criterion | Optimised WordPress | Next.js + headless CMS |
|---|---|---|
| Upfront cost | USD 3,300 to 6,500 | USD 10,000 to 17,500 |
| Achievable mobile LCP | 2.5 to 3 s | Under 1.8 s |
| Plugins to maintain | 15 to 25 after cleanup | None on the front end |
| Attack surface | High (PHP, public admin) | Low (static front, separate CMS) |
| Monthly maintenance cost | USD 165 to 440 | USD 165 to 330 |
| Editor autonomy | High, familiar interface | High after 2 h of training |
| Estimated lifespan | 3 to 4 years | 5 to 7 years |
Optimising WordPress still makes sense for a small, rarely updated site. For a firm publishing 4 to 8 expert pieces a month whose image rests on perceived quality, Next.js delivers a better 5-year cost ratio.
Mini case study
Camille, partner at a strategy consulting firm in New York, currently pays USD 275 a month for WordPress maintenance and about USD 4,400 a year in emergency fixes after broken updates. Her site generates 25 qualified meeting requests a year.
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
With a USD 15,400 migration and USD 220 a month of maintenance, recurring costs fall from USD 7,700 to USD 2,640 a year, a saving of about USD 5,060. If faster pages and better rankings bring 5 extra requests a year and just one becomes a USD 44,000 engagement, the migration pays for itself in year one.
FAQ
What does a WordPress to Next.js migration cost for a consulting firm in New York?
Between USD 10,000 and 17,500 for the core in 2026, plus about USD 1,600 to move 180 articles with redirects. The full budget sits between USD 11,500 and 19,000.
Will we lose rankings during the migration?
No, as long as every old URL is 301-redirected and Search Console is monitored after cutover. A slight 2 to 4 week fluctuation is normal, followed by gains from speed.
Can our consultants publish on their own?
Yes, the headless CMS provides an editing interface with preview and approval workflow. A 2-hour training session is usually enough for a team of 5 to 10 writers.
What LCP can we realistically reach?
A mobile LCP under 1.8 s is a realistic target with AVIF images and static rendering. That is more than a 55 % improvement over the current 4.2 s.
What does hosting a Next.js site cost?
Between USD 20 and 65 per month for a firm of this size, CDN included. The headless CMS adds USD 0 to 99 per month depending on the plan and number of editors.
Let's scope your project. Send us your site URL, plugin list and content volume: we will price a migration between USD 10,000 and 19,000 with an 8 to 12 week schedule. 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.
