The Honest Truth
WordPress powers 43% of the web. It's the most popular CMS in the world. But popular doesn't always mean best. The right choice depends entirely on what your website needs to DO for your business.
This isn't a hit piece on WordPress — it's a genuine comparison based on real data. We've built sites on both platforms and have seen what works (and what doesn't) for different types of businesses.
Speed & Performance
This is where the gap is largest. The average WordPress site loads in 4.7 seconds on mobile. A custom-coded Next.js site loads in under 1.5 seconds. That's not a marginal difference — Google's research shows 53% of mobile visitors leave a site that takes longer than 3 seconds to load.
WordPress is slow because of its architecture: every page request hits a PHP server, queries a MySQL database, loads 20-50 plugins, and renders the page dynamically. Custom-coded sites can be pre-rendered at build time and served from a CDN edge — no server processing at all.
Cost Comparison
WordPress seems cheaper upfront, but the total cost of ownership tells a different story:
- WordPress: £1,000-5,000 build + £50-200/month hosting + £100-500/year plugins + £50-200/month maintenance = £3,000-8,000 in year one
- Custom-coded: £2,500-10,000 build + £0/month hosting (Vercel free tier) + £0/year plugins + £0/month maintenance = £2,500-10,000 total, with near-zero ongoing costs
- By year 2, the custom site is cheaper. By year 3, it's significantly cheaper.
SEO
Google uses Core Web Vitals as a direct ranking signal. These measure loading speed (LCP), interactivity (INP), and visual stability (CLS). Custom-coded sites consistently score 90-100 on these metrics. WordPress sites average 50-70 — and that's a meaningful ranking disadvantage.
Both platforms can implement proper meta tags, structured data, and sitemaps. The difference is in the performance metrics that Google actually measures.
Security
WordPress is the #1 target for hackers because of its popularity and plugin ecosystem. 90% of hacked CMS sites in 2025 were WordPress. Plugins are the main attack vector — each one is a potential vulnerability that needs regular updates.
Custom-coded static sites have virtually zero attack surface. There's no database to hack, no admin panel to brute-force, and no plugins to exploit. The site is just HTML, CSS, and JavaScript served from a CDN.
When to Use WordPress
- You need to publish content daily and want non-technical staff to edit it
- You need e-commerce with 1,000+ products (WooCommerce)
- Budget is under £2,000 and you need something functional fast
- You need a specific plugin that doesn't exist elsewhere
When to Go Custom
- Your website is your primary source of leads or customers
- Speed and Google ranking matter to your business
- You want a site that stands out from competitors using the same templates
- You're tired of plugin updates breaking things
- You want minimal ongoing costs and maximum long-term value
The Verdict
WordPress is a great tool for certain use cases. But for most service businesses where the website needs to generate leads and build credibility, a custom-coded site delivers better performance, better SEO, lower long-term costs, and zero security headaches.