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WordPress Plugin Development

Most “custom WordPress development” you can buy is functions.php tweaks dressed up as features. Real plugin development means proper namespaces, capability checks, hooks, filters, REST endpoints, admin UIs, and code your future developer can actually maintain. Here is what we build, how we build it, and proof we know what we are doing.

What we build

  • Custom post types and taxonomies — products, services, case studies, team members, anything domain-specific
  • Admin tools — settings pages, dashboards, custom columns, bulk actions, importers
  • REST API endpoints — for headless setups, mobile apps, third-party integrations
  • Third-party integrations — Stripe, PayPal, Mailchimp, Klaviyo, ActiveCampaign, Twilio, WhatsApp Business API, Zapier, Make, custom CRMs
  • WooCommerce extensions — custom payment gateways, shipping methods, product types, checkout flows
  • Booking and reservation systems — for restaurants, clinics, service providers
  • Member directory + profile management — for community sites
  • Content automation — scheduled imports, RSS aggregators, AI-content workflows
  • SEO infrastructure — schema generators, sitemap controllers, indexing schedulers (we built one for our own site)

Our engineering standards

Every plugin we ship follows these rules:

  • Proper plugin structure — main file with header, separate includes/ directory, classes prefixed or namespaced
  • Activation and deactivation hooks — clean install, clean uninstall, no orphaned database tables
  • Capability checks on every admin action — never assume the user is an admin
  • Nonces on every form submission — protects against CSRF
  • Sanitisation on input, escaping on output — no XSS vectors
  • Translation-ready — all strings wrapped in `__()` or `_e()` with text domain
  • WP coding standards — code passes WordPress’s PHP_CodeSniffer ruleset
  • No jQuery dependency on the frontend unless explicitly needed — vanilla JS by default for performance
  • Documented hooks — every filter and action documented so future developers can extend without core changes

Plugins are delivered as a ZIP installable via WordPress plugin admin, plus the source code in a Git repository for your team.

Examples we have shipped

The website you are currently reading runs on a custom plugin we wrote — Backlink Hut Core. It includes 5,000+ lines of PHP across 9 modules: custom post types (Products, Services, Case Studies, Team), page templates (Home, Service, Location, About, Contact), schema/JSON-LD generator, SEO head, settings panel, CSV bulk importer, indexing schedule with daily cron, dynamic XML sitemap. Built without a single line of Elementor, Divi, or page-builder code.

Other client work includes: WooCommerce custom payment gateway for Thai banks, WhatsApp Business API integration plugin (available in our shop), AI-content moderation plugin for a content marketplace, custom directory plugin with paid listing tiers.

Pricing

  • Small custom plugin (1-3 features, no third-party API) — $800-2,500
  • Medium plugin (5-10 features, one or two integrations) — $2,500-6,000
  • Large plugin (full admin UI, multiple integrations, REST API) — $6,000-15,000
  • WooCommerce extension — $1,500-5,000 depending on scope
  • Hourly bug-fix and small features on existing plugins — $50-80/hour

Pricing is fixed-quote based on a written specification. We share the spec for your approval before any code is written.

WordPress plugin development FAQ

How much does WordPress plugin development cost? $800-15,000 depending on scope. Most custom features land in the $2,500-6,000 range.

Custom plugin vs use existing? Use existing plugins for solved problems with active maintenance. Build custom when no good off-the-shelf option exists, or when existing plugins force you into a workflow that does not match your business.

How long does plugin development take? Small plugins 1-2 weeks. Medium 3-6 weeks. Large 6-12 weeks including QA and documentation.

Can custom plugins be sold? Yes — we can build plugins for resale on CodeCanyon, the WordPress.org repository, or your own marketplace. We include documentation, demo content, and translation-readiness as standard.

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