Building on a premium theme: what it saves and risks

Key takeaways

A premium WordPress theme typically costs £40 to £100 for the licence, sometimes with yearly renewals for updates. Building a small business site on one costs about £1,500 to £5,000, against £8,000 or more for custom design. Themes save design time, but heavy ones can slow a site and limit changes, so choose carefully.

• Theme licence: about £40 to £100.
• Yearly renewal for updates: often £30 to £80.
• Site built on a theme: about £1,500 to £5,000.
• Custom design instead: about £8,000 or more.

How much does a premium theme cost?

A premium WordPress theme licence typically costs £40 to £100, based on common marketplace and developer prices. Some include lifetime updates; others need a yearly renewal of about £30 to £80 for updates and support. Bundled page builders or plugins may carry their own licences.

• WordPress website cost for a UK small business
• How much does a business website cost in the UK?

What does building on a theme save?

Building on a theme saves design and front-end development time, because layouts, menus and styles are ready-made. A designer adapts them to your brand rather than starting from scratch. For a small business site, that can cut build cost by 50% to 80% compared with custom design.

• Custom-coded website cost: when bespoke is worth it

What are the risks of premium themes?

The main risks are speed, lock-in and updates. Multi-purpose themes often load features you never use, which can hurt Core Web Vitals. Some themes rely on their own page builder, making a later switch costly. Unrenewed licences can mean missed security updates.

• Bloated code slowing the site.
• Lock-in to a theme's page builder.
• Missed updates when licences lapse.
• Looking like other sites on the same theme.

• Is your page builder slowing your website down?
• Website template mistakes that make a business look generic

How do you choose a theme that will not cost you later?

Choose a theme that is lightweight, regularly updated, follows WordPress theme guidance, and does not lock content into a proprietary builder. Test its demo pages on a phone with PageSpeed tools before buying. A good theme should feel fast before you add your content.

• How to choose a mobile-friendly WordPress theme

When should you skip a theme?

Skip a theme when your site needs unusual layouts, strong brand distinction or features that would mean bending the theme heavily. Heavy customisation of a theme can end up costing as much as custom work, with worse results.

What does this look like in practice?

At Global Bridge Labs (GBL), a UK interior designer's site used a multi-purpose theme with sliders, animations and three bundled plugins. It scored poorly for speed on mobile. Rebuilding on a lightweight theme cost about £2,500 and the site passed Core Web Vitals within a month.

• See client work
• Website Design & Development for UK businesses

Theme cost checklist

• Check licence price and renewal terms.
• Test demo speed on a phone.
• Avoid themes that lock content into a builder.
• Check the update history.
• Budget for yearly renewals.
• Limit customisation to what you need.

• Custom-coded website cost: when bespoke is worth it
• Plugin and app subscriptions: the creeping website cost

Next step

Shortlist three themes and test each demo with a speed tool on mobile. Drop any that are slow before your content is even added.