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WordPress Plugin
Development

ONE° Studio builds custom WordPress plugins for businesses in Australia, USA, and Canada. We add functionality, connect third-party services, and automate workflows — fully documented and tested.

Book a Free Plugin Call
CUSTOM PLUGINS•
API INTEGRATIONS•
PERFORMANCE OPTIMIZED•
SECURITY HARDENED•
WOOCOMMERCE EXTENSIONS•
ADMIN PANELS•
CUSTOM POST TYPES•
CUSTOM PLUGINS•
API INTEGRATIONS•
PERFORMANCE OPTIMIZED•
SECURITY HARDENED•
WOOCOMMERCE EXTENSIONS•
ADMIN PANELS•
CUSTOM POST TYPES•
CUSTOM PLUGINS•
API INTEGRATIONS•
PERFORMANCE OPTIMIZED•
SECURITY HARDENED•
WOOCOMMERCE EXTENSIONS•
ADMIN PANELS•
CUSTOM POST TYPES•
CUSTOM PLUGINS•
API INTEGRATIONS•
PERFORMANCE OPTIMIZED•
SECURITY HARDENED•
WOOCOMMERCE EXTENSIONS•
ADMIN PANELS•
CUSTOM POST TYPES•
CUSTOM PLUGINS•
API INTEGRATIONS•
PERFORMANCE OPTIMIZED•
SECURITY HARDENED•
WOOCOMMERCE EXTENSIONS•
ADMIN PANELS•
CUSTOM POST TYPES•
CUSTOM PLUGINS•
API INTEGRATIONS•
PERFORMANCE OPTIMIZED•
SECURITY HARDENED•
WOOCOMMERCE EXTENSIONS•
ADMIN PANELS•
CUSTOM POST TYPES•
CUSTOM PLUGINS•
API INTEGRATIONS•
PERFORMANCE OPTIMIZED•
SECURITY HARDENED•
WOOCOMMERCE EXTENSIONS•
ADMIN PANELS•
CUSTOM POST TYPES•
CUSTOM PLUGINS•
API INTEGRATIONS•
PERFORMANCE OPTIMIZED•
SECURITY HARDENED•
WOOCOMMERCE EXTENSIONS•
ADMIN PANELS•
CUSTOM POST TYPES•

Clean Architecture

We follow WordPress coding standards and best practices. Every plugin is object-oriented, namespaced, and designed for maintainability and future updates.

Verified

Security First

Input validation, output escaping, nonce verification, and capability checks on every action. We build plugins that pass WordPress.org security reviews.

Verified

Performance Optimized

Efficient database queries, caching strategies, and lazy loading ensure your plugin doesn't slow down your site. We benchmark every feature.

Verified

API Integrations

Connect WordPress to CRMs, payment processors, marketing platforms, webhooks, and third-party APIs. Automate workflows and sync data in real-time.

Verified
12+ Years Experience100+ Projects DeliveredAustralia · USA · CanadaFixed Price, Every TimeStudio: Open
[Our Process]

A Systematic
Approach to Growth.

  • 01
    Phase 01

    Requirements Analysis

    We document every feature, data flow, user role, and integration point. We identify edge cases and define acceptance criteria before writing code.

    Verified Step
  • 02
    Phase 02

    Plugin Architecture

    We design the plugin structure using WordPress hooks, filters, and MVC patterns. We plan database schema, REST API endpoints, and admin interfaces.

    Verified Step
  • 03
    Phase 03

    Development & Testing

    We build the plugin using PHP 8+, WordPress coding standards, and automated testing. We test on multiple PHP versions, WordPress versions, and hosting environments.

    Verified Step
  • 04
    Phase 04

    Deploy & Document

    We deploy to your production site, provide full code documentation, and train your team on plugin settings and maintenance workflows.

    Verified Step
[Digital Assets]

Selected Work
Case Studies.

PRJ_WRK_002
Phenom Elite

Phenom Elite

Giliarto

Giliarto

Klik Decor

Klik Decor

Bell Athletic

Bell Athletic

Best Products Out There

Best Products Out There

Shopify

11 projects

React

0 projects

WordPress

0 projects

Graphic Design

0 projects

View all projects
[Technical Execution]

WordPress Plugin Development Services
System Specs.

Custom plugin development for WordPress and WooCommerce sites.

Core Plugin Types

  • Custom post types & taxonomies
  • Advanced custom fields (ACF extensions)
  • Custom admin panels & dashboards
  • WooCommerce extensions & customizations
  • Membership & user management plugins
  • Booking & appointment systems
  • Form builders & data collection
  • Import/export & data migration tools

Advanced Features

  • REST API & webhook integrations
  • Third-party API connections (Stripe, Mailchimp, etc.)
  • CRON jobs & background processing
  • Multi-site compatibility
  • Role-based access control
  • Custom Gutenberg blocks
  • WP-CLI commands
  • Performance monitoring & logging

Powering the Engine

WordPress Core
PHP 8+
WooCommerce API
REST API
WP-CLI
Git Version Control
[Use Cases]

What Custom Plugins
Are Built For.

Off-the-shelf plugins don't always do exactly what you need. We build the difference.

Custom Booking Systems

Booking forms with availability management, reminders, and payment.

Membership & Gating

Lock content behind memberships or subscriptions with custom logic.

API Integrations

Connect WordPress to external CRMs, ERPs, or data sources.

Custom Post Types

Add new content types (jobs, properties, menus) beyond pages and posts.

[Also Consider]

Related
Services.

WordPress Development

Full custom WordPress sites with any functionality you need.

Custom Web Apps

If WordPress isn't the right platform, we build from scratch.

WordPress Security

Harden your site after adding custom plugin functionality.

[Customer Success]

What clients are saying
Case Evidence.

CLI_TES_104
"I've worked with ONE° on several projects over the years, and it's always been a positive experience. Building a website can get complicated, especially with multiple stakeholders involved, but they bring a steady, can-do approach that really helps keep things moving. They listen closely to what clients want and offer thoughtful, practical solutions—especially when the challenges aren't straightforward."
Anni Haugan from Appetite - Client Testimonial for ONE° Studio

Anni Haugan

Product Designer - Appetite

[FAQ]

Frequently
Asked.

Custom WordPress plugin development starts from $1,500 AUD for a simple single-purpose plugin. More complex plugins with external API integrations and admin UIs range from $3,000–$15,000+.
Yes. We can extend or modify third-party plugins, though we typically recommend building a companion plugin rather than editing the plugin directly (to avoid update conflicts).
Yes. We build plugins that meet WordPress.org submission guidelines including security reviews, coding standards, and documentation requirements. We handle the entire submission process and ongoing updates for public plugins.
Yes, if required. We build multisite-compatible plugins with network-wide activation, per-site settings, and proper database handling. We test on WordPress multisite environments before delivery.
Not if built correctly. We optimise database queries, use caching, implement lazy loading, and avoid loading scripts on every page. We benchmark performance before and after plugin installation.
We offer monthly maintenance retainers starting at $500/month for ongoing plugin updates, security patches, and compatibility testing. We monitor WordPress and PHP releases and proactively update plugins.
Book a free technical discovery call. We'll discuss your requirements, review your WordPress setup, and provide a detailed proposal with fixed pricing and timeline. No commitment required. Book at onedegree.studio/book or email us directly.
We build plugins to WordPress coding standards, which means they're less likely to break than off-the-shelf plugins. We also offer maintenance retainers to test and update plugins after major WordPress releases.
Simple plugins take 2–3 weeks. Medium complexity plugins (API integrations, custom admin) take 4–6 weeks. Complex plugins with multiple integrations and advanced features can take 8–12 weeks. We provide a detailed timeline after scoping.
Yes. We extend and customize popular plugins like WooCommerce, Gravity Forms, ACF, and BuddyPress. We follow best practices using hooks and filters to ensure updates don't break customizations.
Yes. We integrate WordPress with CRMs (HubSpot, Salesforce), payment processors (Stripe, PayPal), email marketing (Mailchimp, ActiveCampaign), and any REST or SOAP API. We handle authentication, webhooks, and data syncing.
Yes. We provide complete code documentation (PHPDoc standards), user guides for plugin settings, and developer documentation for customization. All plugins include inline comments and README files.
Yes. You own all code we write. We deliver full source code, documentation, and version control history. No licensing restrictions, no ongoing fees (except for optional maintenance retainers).
[Next Steps]

Ready to
get started?

Book a free 20-minute call. We scope your project, give you a fixed price, and tell you exactly what you'll get — no surprises.

Book a Free CallSend a message