Bespoke WordPress plugins built around exactly how your business works — booking systems, calculators, integrations, and tools that off-the-shelf plugins can't deliver.
When an off-the-shelf plugin doesn't quite fit, we build one that does — clean, documented, and maintained.
Booking systems, quote calculators, member portals — built to match your exact workflow, not a generic template.
Connect WordPress to the tools you already use — CRMs, payment gateways, accounting software, and APIs.
Easy-to-use settings screens and dashboards so you can manage your plugin without touching code.
Hand-written PHP, optimised database queries, and no unnecessary dependencies slowing your site down.
Sanitised inputs, proper permissions, and nonce-protected forms — built to WordPress security standards.
Plugins are kept compatible with WordPress core updates as part of our maintenance plans.
Custom plugin development starts with understanding exactly what your business needs — then building only that.
We discuss the problem you’re trying to solve and whether a custom plugin is the right approach.
We write up a clear functional spec and provide a fixed-price quote before any code is written.
Your plugin is developed and tested on a private staging copy of your site.
You test the plugin in a real environment and we refine based on your feedback.
We deploy to your live site with documentation, plus 30 days of free support.
Validates customer postcodes at checkout and blocks orders placed outside the delivery area
Pulls live courier rates into the WooCommerce checkout based on weight, size and destination
Looks up vehicle details from a registration number and books servicing slots automatically
Most agencies take your brief, hand it to a junior designer, and charge senior rates. At Vannquish, you get experience built up since 1997 on every single project — because I do the work myself.
Every plugin follows WordPress coding standards — so it stays compatible as your site grows and updates.
Fill in the form and I'll get back to you the same day — usually within a couple of hours. No hard sell. Just a straight conversation about what you need.
Free quote · No obligation · Same-day response