Theme options sprawl
Hundreds of settings panels make it hard to know which controls the design and which are leftovers from the demo.
Website Development · WordPress Themes
Custom WordPress theme development built on blocks and theme.json
We turn your brand and design system into a WordPress theme where colors, type, spacing and layouts are defined once and editors work within them.
What is WordPress Theme Development?
Custom WordPress theme development is the creation of a WordPress theme written specifically for one website's design, rather than buying and adapting a general-purpose theme. Modern custom themes are usually block themes, which use full-site editing templates, block patterns and a theme.json file to define colors, typography, spacing and which design controls editors may use. Classic PHP themes and child themes remain valid options when a site's plugins or workflow require them.
Marketplace themes try to please every buyer, so they bundle sliders, demo layouts and dozens of options, and the design you see in the demo rarely survives real content. Editors get too much freedom in some places and none in others. A theme built for your site encodes your design decisions once, in theme.json and patterns, and leaves out everything else.
Problems a general-purpose theme creates
Inconsistent pages
Editors pick arbitrary colors, font sizes and spacing because nothing restricts the palette.
Classic theme, block editor
Older themes weren't designed for the block editor, so the editing view doesn't match the published page.
Heavy front-end assets
Bundled CSS frameworks, icon libraries and scripts load on every page regardless of what the page contains.
Our WordPress Theme Development service
Design system to theme.json
Your color palette, type scale, spacing scale and layout widths defined as presets in theme.json, so the editor and the front end share one source of styles.
Block theme templates
Templates and template parts for headers, footers, archives, single posts, search and 404 pages, editable through the Site Editor where you want them to be.
Block patterns & styles
A library of approved sections (hero, feature grid, testimonials, calls to action) and block style variations that keep pages on brand.
Custom blocks where needed
Blocks for components that core blocks can't express, built with block.json and the WordPress block APIs.
Classic and child themes
Lean classic themes when plugins or workflows require PHP templates, and child themes when extending a well-maintained parent is the sensible route.
Editor controls & documentation
Unneeded design controls locked or hidden for editors, plus a short guide explaining which patterns to use where.
Included capabilities
- Full-site editing templates and parts
- theme.json presets for color, type and spacing
- Fluid typography and spacing
- Block patterns and pattern categories
- Block style variations
- Locked templates for critical layouts
- Custom blocks with block.json
- Per-block asset loading
- Accessible navigation and focus states
- Child theme support for future overrides
What WordPress Theme Development changes for your business
Design rules enforced
Editors choose from your palette and patterns, so new pages stay consistent with the brand.
What you edit is what you get
Block themes render the same styles in the editor and on the live page.
Lighter pages
Only the CSS and scripts your design uses are shipped, which helps Core Web Vitals.
Easier to evolve
Changing a color or type scale in theme.json updates the whole site in one place.
Where it makes the biggest difference
Brand refresh on WordPress
A new visual identity applied as a fresh theme while keeping the existing content and URLs.
Moving to full-site editing
Replacing an older classic theme with a block theme so headers, footers and templates become editable.
Multi-site brand consistency
One theme, or a parent with style variations, shared across several sites or sub-brands.
Extending a solid parent theme
A child theme that adds your styles and templates on top of a maintained theme you already like.
From design tokens to a working theme
We decide how much freedom editors get before writing templates, because that decision shapes everything else.
Audit the design
We review your designs or brand guidelines and list the tokens, components and templates they imply.
Plan editor freedom
Agree which parts editors can change, which are locked, and which need patterns.
Build the foundation
theme.json, base styles, templates and template parts.
Build patterns & blocks
Section patterns, style variations and any custom blocks.
Test with real content
Pages built with your actual copy and images, across devices and browsers.
Hand over
Theme deployed, editors trained, documentation delivered.
What it connects to
WordPress Theme Development
- WooCommerce templates and blocks
- Advanced Custom Fields blocks
- WPML or Polylang
- SEO plugins such as Yoast or Rank Math
- Form plugins
- Google Fonts or self-hosted fonts
Built with
Which kind of WordPress theme?
| Criterion | Block theme | Classic theme | Child theme |
|---|---|---|---|
| Templates | HTML block templates, editable in Site Editor | PHP template files | Overrides on a parent theme |
| Global styles | theme.json | theme.json optional, mostly CSS | Inherits parent, can add its own |
| Editor experience | Full-site editing | Content editing only, headers via code or Customizer | Depends on parent |
| Best fit | New builds on current WordPress | Sites tied to plugins expecting PHP templates | Customizing a maintained parent theme |
Security, quality and scale
No bundled plugins
We don't package third-party plugins inside the theme, which avoids outdated, unpatchable copies.
Escaped template output
Dynamic values in PHP templates are escaped with WordPress functions.
Update-safe structure
Site-specific functionality stays in plugins, so the theme can be replaced or updated safely.
Performance at scale
Minimal render-blocking assets and cache-friendly markup keep pages fast under load.
What working with us looks like
Current WordPress practice
We build block themes with theme.json and the Site Editor, not page-builder shells.
Designers and developers together
The people who design your patterns also build them, so nothing gets lost in translation.
Right theme type for you
We'll recommend a block, classic or child theme based on your plugins and team, not on trend.
Performance-minded
Asset loading is planned from the start rather than optimized after launch.
What it costs
Fixed-price packages with the scope written down, paid stage by stage. Your project goes live once it's fully paid.
Related services, technologies and industries
Sources and further reading
Official documentation and guidance if you want to read more about this topic.
WordPress Theme Development: questions we hear most
What is a WordPress block theme?
A block theme is a WordPress theme built entirely from blocks, with templates written as block markup and global styles defined in theme.json. It supports full-site editing, so headers, footers and templates can be changed in the Site Editor instead of in code.
Should we build a block theme or a classic theme?
For most new sites on current WordPress, a block theme is the better default. A classic theme can still make sense when important plugins or existing workflows rely on PHP templates or the Customizer.
Can you convert our design from Figma into a WordPress theme?
Yes. We translate the design's tokens into theme.json and its sections into patterns and templates. It helps if the Figma file uses consistent styles and components, and we'll flag gaps before development.
What is a child theme and do we need one?
A child theme inherits a parent theme's templates and styles and adds or overrides only what you change. You need one when customizing an existing theme that will keep receiving updates, so your changes aren't overwritten.
Will a custom theme lock us in to your agency?
No. The theme follows standard WordPress structure and is handed over with its source code and documentation on final payment, so any experienced WordPress developer can maintain it.
Next step
Turn your design into a WordPress theme
Share your designs or brand guidelines. We'll outline the theme structure, patterns and editor controls it needs.