WordPress Development

Custom Gutenberg Block & FSE Development Your Design. Your Blocks. Your Editors in Control.

The WordPress block editor is now the standard — and the native blocks that ship with WordPress are nowhere near enough for a serious site. Your content editors need blocks that match your design system exactly, behave consistently across every page, and give them the flexibility to build pages without touching code or fighting with a page builder. We build custom Gutenberg blocks and Full Site Editing templates from scratch — React-powered, performant on the front end, and intuitive to use in the editor. No ACF dependency required. No page builder tax.

Custom blocks built with React and registered via block.json — WordPress standards compliant
Editor-perfect UX — blocks that look and behave the same in the editor as on the front end
90-day post-launch warranty — we fix any issues free
Free quote in 24 hours — guaranteed
Top Rated — Upwork & Fiverr
Hand-Coded — No Page Builders
90-Day Bug Warranty
40+
BLOCK PROJECTS DELIVERED
6+
YEARS EXPERIENCE
98%
CLIENT SATISFACTION
90d
BUG WARRANTY
WordPress Tech Stack
WordPress 6.x
React / JSX
block.json
Full Site Editing
WordPress Scripts
Block Patterns
PHP 8.x
SCSS / CSS3
Top Rated Upwork
★★★★★ 5.0
Top Rated Fiverr
★★★★★ 4.9

Exactly What You Get With WordPress Gutenberg Development

No vague promises. Here is precisely what we build, configure, and hand over.

Custom Gutenberg Block Development is about giving your content editors a purpose-built toolkit — blocks that match your design system exactly, with the controls they actually need and none of the ones they do not. The alternative is asking editors to fight with generic core blocks and inline CSS overrides, or paying a page builder tax that adds 200KB of JavaScript to every page load for functionality you only use on three templates.

At Softileo, we build custom Gutenberg blocks the correct way — registered via block.json, built with React and @wordpress/scripts, styled with CSS that loads only on pages where the block is used, and with editor UX that mirrors the front-end output exactly. No classic editor fallbacks. No PHP-rendered blocks where JavaScript belongs. No block that looks one way in the editor and a completely different way on the published page.

What our Gutenberg development covers:

  • Custom block development — purpose-built blocks for your specific content needs: hero sections, testimonial grids, team member cards, pricing tables, tabbed content, timelines, and anything your design system requires.
  • Full Site Editing templates — block-based header, footer, archive, single, and page templates for block themes — giving your editors visual control over the entire site structure.
  • Block patterns — pre-composed, reusable layouts built from your custom and core blocks — one-click insertion of complex page sections that always look on-brand.
  • Block variations and styles — extending core blocks with your brand's colour palette, typography options, and layout variations — registered as selectable styles in the editor sidebar.
  • Inner blocks & block locking — blocks that contain nested child blocks with controlled structure — letting editors populate content freely within a layout that cannot be broken.
  • 90-day warranty — if anything breaks after a WordPress update, we fix it free.

The result: a WordPress site where your editors build pages using blocks that look exactly like the design, behave predictably every time, and never require a developer to intervene for routine content updates — regardless of which page or template they are editing.

What's Included

  • Custom block plugin — all blocks packaged as a standalone plugin, separate from the theme
  • React-powered edit components — editor UX mirrors front-end output, no surprises on publish
  • block.json registration — attributes, supports, and styles declared correctly for WordPress standards
  • Front-end render — PHP render callbacks or save functions optimised for performance and SEO
  • Block patterns library — pre-composed page section layouts for one-click editor insertion
  • Block styles and variations — core block extensions matching your brand design system
  • Full Site Editing templates — block-based header, footer, and page templates where required
  • 90-day bug warranty + editor training session — your content team uses every block with confidence
Popular Searches
gutenberg block development custom gutenberg blocks wordpress block editor development full site editing wordpress fse development custom wordpress blocks gutenberg block plugin wordpress block patterns react gutenberg blocks wordpress block variations

Custom Block Development

Purpose-built Gutenberg blocks for your exact design requirements — hero sections, card grids, testimonials, pricing tables, timelines, accordions, and any component your content editors need. Registered via block.json, built with React, styled with scoped CSS.

Editor-Accurate UI

The block looks and behaves identically in the editor and on the published page. InspectorControls for sidebar settings, BlockControls for toolbar options, and RichText fields for inline editing — all implemented so editors work with the real layout, not a placeholder.

Full Site Editing Templates

Block-based header, footer, single post, archive, search, 404, and page templates for block themes — built with the Site Editor in mind and locked to prevent structural breakage while giving editors full content flexibility.

Block Patterns Library

Pre-composed, reusable page section layouts registered as block patterns — two-column feature rows, testimonial carousels, call-to-action banners, and any recurring layout your design system uses. One-click insertion, always on-brand.

Block Styles & Variations

Core block extensions that add your brand's design options — button colour variants, image styles, heading size presets, and spacing options — registered as selectable styles in the editor sidebar without custom CSS per-page.

Inner Blocks & Block Locking

Blocks that contain nested child blocks — content areas where editors populate text and media freely within a fixed structural layout that cannot be accidentally broken, removed, or rearranged out of its intended position.

Performance-Optimised Output

Block CSS enqueued conditionally — only on pages where the block is actually used. JavaScript loaded only in the editor, not on the front end where it is not needed. Semantic HTML output that loads fast and reads cleanly by search engines.

Editor Training & Handover

1-hour training session for your content team — how to insert and configure each custom block, how to use block patterns, how to manage FSE templates, and how to maintain visual consistency across pages without developer involvement.

Is WordPress Gutenberg Development Right For Your Business?

Hand-coded WordPress is not for everyone. Here is an honest breakdown of when it delivers clear ROI.

Every WordPress site built in the last three years has been built with the block editor — and most of them are still using the same generic core blocks and inline CSS workarounds that content editors have been fighting with since Gutenberg launched. The block editor's real power is not the core blocks. It is the ability to give editors a purpose-built, constrained toolkit where every block looks right, every layout is on-brand, and no design decision is left to whoever is editing the page that day.

Custom Gutenberg development makes sense when you recognize any of these situations:

  • Your editors are using a page builder — Elementor, Divi, or WPBakery — and you want to move to native blocks without losing design flexibility
  • Your content team struggles to maintain visual consistency because core blocks give too many options and no guardrails
  • You have repeating page sections — testimonials, team members, pricing tables — that editors currently rebuild from scratch on every page
  • Your design system has components that cannot be faithfully reproduced with core blocks and inline CSS overrides
  • You are building a new site on a block theme and need Full Site Editing templates that match your design exactly
  • You want editors to be able to build new pages independently without producing off-brand results
  • You are transitioning from ACF flexible content to a native block-based editing experience

The editorial efficiency argument is direct: A content team using purpose-built block patterns can assemble a fully on-brand landing page in 20 minutes. The same team using generic core blocks spends 90 minutes and still produces something that needs a developer to clean up. Custom blocks pay for themselves in hours saved on every piece of content published — and eliminate the developer-as-gatekeeper bottleneck entirely.

When custom blocks are not the right call: If your site has simple content needs — text, images, and the occasional embedded video — core WordPress blocks are genuinely sufficient and custom development would be unnecessary overhead. We will tell you that honestly on the discovery call. Custom block development adds real value when your content is complex, your design system is specific, or your editorial team is large enough that consistency is a genuine operational challenge.

News & Editorial Sites

Custom article blocks — pull quotes, byline cards, related article embeds, data visualization blocks, and editorial layout patterns that match your publication's design language.

Corporate & SaaS Sites

Feature grids, pricing table blocks, testimonial carousels, team member cards, and case study layouts — all on-brand, all editor-insertable without developer involvement.

Educational Platforms

Course overview blocks, instructor profile cards, curriculum accordion blocks, and programme comparison tables — purpose-built for educational content management at scale.

Healthcare & Medical

Staff profile blocks, service description cards, location detail blocks, and structured FAQ patterns for medical content that must be consistent and professionally presented.

WooCommerce Editorial

Product highlight blocks, promotional banner patterns, category feature sections, and shop page editorial content blocks that sit alongside WooCommerce's native product blocks.

Non-Profit Organisations

Impact statistic blocks, campaign progress patterns, team and volunteer profile blocks, and event listing layouts — giving non-technical staff editorial independence.

Agency & Studio Sites

Case study layout blocks, service detail cards, client logo grids, and portfolio gallery patterns — purpose-built blocks that match the agency's own design system exactly.

Page Builder Migrations

Migrating from Elementor or Divi to native blocks? We rebuild your existing page builder components as custom Gutenberg blocks — same visual output, native performance.

Our WordPress Guarantee

  • Fixed price — full block scope agreed and signed off before a single component is coded
  • 90-day bug warranty — any block failure or editor issue fixed at zero cost
  • block.json registration — WordPress standards compliant, not legacy register_block_type hacks
  • Editor-accurate preview — blocks look identical in the editor and on the published page
  • Packaged as a standalone plugin — blocks survive theme changes and work across any block theme
  • Conditional asset loading — CSS and JS loaded only on pages where the block is used
  • No page builder dependency — fully native WordPress blocks, no Elementor or ACF required
  • Editor training included — your content team uses every block confidently from day one
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★★★★★

"Our content team was spending two hours building every new page in Elementor and it still never looked quite right. Softileo built us twelve custom Gutenberg blocks and a pattern library. Now editors assemble a fully on-brand page in under 30 minutes and it looks exactly like the design every single time. The developer dependency for content work is completely gone."

Page build time 2hrs → 30 mins, zero developer dependency for content updates
Hannah Okafor Head of Content, Okafor Digital Agency

How We Deliver Your WordPress Gutenberg Development — Step by Step

From first call to live site — a clear process with no surprises, no delays, and a hand-coded WordPress site at the end.

We deliver most custom Gutenberg block projects in 7-12 days from kickoff. Design review first — every block's editor UI and front-end output agreed before a React component is written. Then a focused build sprint. Then QA in the actual WordPress editor with your real content. A block library your editors can use immediately and your design team can trust completely.

Our proven process:

  • Discovery Call (Day 1): Free 60-min session to audit your content types, map every block your editors need, review your design system, and identify which core blocks can be extended versus which need to be built from scratch.
  • Block Specification (Day 1-2): Written spec covering every block — attributes, InspectorControls, inner block structure, block patterns, FSE templates, and asset loading strategy. You approve before any React is written.
  • Scope & Quote (Day 2): Fixed-price quote based on the approved block list. Every block and pattern costed. Full project cost confirmed before build begins.
  • Block Build (Day 2-9): Custom blocks developed with React and @wordpress/scripts, registered via block.json, styled with scoped SCSS, and packaged as a standalone plugin. Block patterns and FSE templates built alongside.
  • Editor QA & Testing (Day 9-11): Every block tested in the actual WordPress editor — insert, configure, publish, and verify front-end output. Block locking verified. Pattern library tested. Cross-browser front-end testing.
  • Launch & Handover (Day 11-12): Block plugin deployed. Editor training session delivered. Full block documentation handed over. 90-day warranty begins.

What makes our process different: We QA every block in the actual WordPress editor with your real content — not Lorem Ipsum in a demo environment. Editors see blocks populated with their actual copy and images before sign-off. The moment a block's editor UX creates confusion, we fix it before the training session — not after your content team has already formed bad habits around a clunky interface.

Delivery Timeline

Discovery Call

Day 1

Free 60-min call. Content types, required blocks, design system, and core block extension needs all mapped.

Block Specification

Day 1-2

Written spec: every block's attributes, controls, inner blocks, patterns, and FSE templates defined. You approve.

Scope & Quote

Day 2

Fixed-price quote based on approved block list. Every block and pattern costed. Full cost confirmed.

Block Build

Day 2-9

React components, block.json registration, SCSS styling, plugin packaging, patterns, and FSE templates built.

Editor QA & Testing

Day 9-11

Every block tested in the WordPress editor with real content. Patterns tested. Cross-browser front-end QA.

Launch & Handover

Day 11-12

Plugin deployed. Editor training session delivered. Block documentation handed over. Warranty starts.

Our Process

From First Call to Live WordPress Site in Days — Not Months

No 6-month timelines. No endless meetings. We build fast, test thoroughly, and launch when it\'s ready — typically within 7-10 days.

01

Discovery Call

Free 60-min session. We audit your content types, map every block your editors need, review your design system for components that need custom blocks versus core block extensions, and identify FSE template requirements.

Day 1
02

Block Specification

Written specification covering every block — attributes schema, InspectorControls and BlockControls layout, inner block structure and locking, block supports configuration, block patterns composition, FSE template structure, and CSS loading strategy. You approve before any React is written.

Day 1-2
03

Scope & Quote

Fixed-price quote based on the approved block specification. Every custom block, block pattern, block variation, and FSE template individually costed. Full project cost confirmed in writing before build begins.

Day 2
04

Block Build

Custom blocks developed using React and @wordpress/scripts, registered via block.json with correct attributes and supports declarations, styled with scoped SCSS, and packaged as a standalone plugin. Block patterns registered. FSE templates built in block markup.

Day 2-9
05

Editor QA & Testing

Every block tested in the actual WordPress editor with real content — insert, configure all controls, publish, and verify front-end output matches exactly. Block locking tested. Pattern library insertion tested. Cross-browser front-end rendering verified.

Day 9-11
06

Launch & Handover

Block plugin deployed to production. 1-hour editor training session delivered with your content team. Block documentation and pattern usage guide handed over. 90-day warranty begins.

Day 11-12
FAQs

Questions About WordPress Gutenberg Development

Still not sure? Ask us anything — we reply within 24 hours.

Top Rated on Upwork
★★★★★ 5.0 / 5.0
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Top Rated on Fiverr
★★★★★ 4.9 / 5.0
Top Rated
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Custom Gutenberg block development starts from $1,000 for a small set of focused blocks — two or three purpose-built components and a block pattern library. More comprehensive projects covering ten or more blocks, Full Site Editing templates, block variations, and a full pattern library range from $2,500 to $5,000. We send a fixed-price quote based on an approved block specification within 24 hours of a discovery call.
ACF blocks use Advanced Custom Fields to create editor interfaces without writing React — they are PHP-rendered and use ACF field groups for their controls. Custom Gutenberg blocks built with React are native WordPress blocks — they use the block editor's own component library, support block-level features like block locking, block patterns, and Full Site Editing, and do not create a dependency on the ACF plugin. For new projects, native React blocks are the correct long-term approach; for teams already invested in ACF, ACF blocks remain a valid option and we build both.
Yes — because we build on the @wordpress/scripts toolchain and register blocks via block.json, which is the WordPress-endorsed stable API for block registration. We avoid using any WordPress internal APIs marked as experimental or subject to change. Block deprecations — handling older saved block markup after a block's attributes change — are handled correctly using WordPress's built-in deprecation system. The 90-day warranty covers any update-triggered block failures post-launch.
Yes. Page builder migration to native Gutenberg blocks is a common project we take on. We audit every Elementor widget or Divi module in use, identify which can be replaced by extended core blocks and which require custom development, and rebuild them as native blocks — same visual output, native performance, no page builder dependency. The content migration itself — converting existing pages from page builder format to block format — is scoped separately based on the number of pages involved.
Block patterns are pre-composed, reusable page section layouts built from one or more blocks — a two-column feature row, a testimonial carousel, a call-to-action banner — that editors can insert in one click from the block inserter. They are different from reusable blocks in that inserting a pattern creates an independent copy editors can customise, rather than a synced instance. For sites with consistent recurring page sections, a well-designed pattern library dramatically reduces the time and skill required to build new pages consistently.
Full Site Editing (FSE) is WordPress's block-based approach to managing the entire site structure — header, footer, archive templates, single post templates, and page templates — through the Site Editor rather than PHP template files. It requires a block theme. If you are building on a block theme or want editors to have visual control over site-wide templates, FSE development is relevant. If you are running a classic PHP theme, custom blocks work independently of FSE and do not require a theme change.
Yes — always. Custom blocks are packaged as a standalone plugin, completely separate from the theme. This means your blocks survive a theme change, work across any block-compatible WordPress theme, and can be version-controlled and updated independently of the rest of your site. Putting blocks inside a theme's functions.php or theme folder is a common mistake that creates unnecessary coupling — we never do it.
We actively design against this. Block locking prevents editors from removing, moving, or inserting blocks in positions that would break the layout. The allowedBlocks attribute on inner block containers restricts which blocks can be added inside a custom block. Block supports configurations remove controls editors should not touch. The goal is a block that gives editors all the content flexibility they need while making structural mistakes technically impossible.
No — correctly built custom blocks are more performant than page builder alternatives. Block CSS is enqueued conditionally using the block_editor_settings and has_block checks — styles only load on pages where that block actually appears. Block JavaScript that is only needed in the editor is never loaded on the front end. The result is leaner page loads than any page builder alternative, and comparable performance to a hand-coded theme template.
The 90-day warranty covers any bugs or failures in the blocks we delivered — editor rendering errors, front-end display problems, block validation failures after publish, React errors in the editor, or PHP render callback issues. We fix them at no cost. It does not cover issues caused by WordPress major version updates that introduce breaking changes to the block editor API, third-party plugin conflicts introduced after delivery, or new block feature requests beyond the agreed specification.
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