Custom Plugin Development
Custom WordPress plugins for functionality that does not exist in the market or should not be solved with a generic tool.
Built to be maintained, documented, and extended as the organisation grows.
Most WordPress functionality can be handled by a well-chosen plugin from the market. Some of it cannot. The requirement is specific to how the organisation works, the available options do too much or too little, or a generic tool would put important data and workflows in the hands of a third party.
That is where we write a custom plugin. It does the job the project needs and nothing more, it follows WordPress standards, and it is documented so it can be maintained and extended long after launch. Third-party plugins are still chosen carefully and kept to the minimum that does the job well.
We also build and maintain plugins of our own. The same approach goes into the work we do for clients.
What a custom plugin build includes.
- 01
Requirements in writing
What the plugin must do, who uses it, and which systems it touches, agreed before code is written.
- 02
Custom functionality
Features the market does not offer, built around the way your organisation works.
- 03
Admin screens your team can use
Settings and dashboards designed for the people who manage them every day.
- 04
Integrations
Connections to CRMs, payment providers and other tools, configured and tested.
- 05
Documentation
Documented so any competent WordPress developer can maintain and extend it.
- 06
Maintained after launch
Kept compatible with WordPress core and your platform as both evolve.
You own the code. No platform fees, no licence costs, no lock-in.
We build plugins of our own, too.
emailfooter
Free, open-source email signatures: one design, personalised by every employee and installed in 16 mail apps.
Bizy
Operations for WordPress: clients, projects, money, files, contracts and forms, one plugin at a time.
BizySign
Contracts and agreements with e-signature, sealed PDFs and an audit trail.
BizyFiles
A File Explorer style file manager with access per folder for people and groups.
How a WordPress project runs at WPFlat.
Six phases. Each one exists because skipping it produces a worse result.
- 01
Discovery
The brief, the operations, and the integrations in writing.
- 02
Design
Designed and approved before development begins.
- 03
Build
Built from the approved design on staging.
- 04
Review
Written sign-off before anything goes live.
- 05
Launch
A managed technical event, not a button click.
- 06
After launch
The same team stays as your technical partner.
Every project is different, and the process adapts to the scope. Tell us what you need WordPress to do and we will show you what the process looks like for your project.
See our full processFrequently asked questions
Who owns a plugin you build for us?
You do. Full ownership of everything built: no platform fees, no licence costs, no lock-in.
Will another developer be able to work on it?
Yes. Every custom plugin is documented so that any competent WordPress developer can pick it up and extend it.
Could one of your own plugins do the job?
Possibly. Take a look at our plugins, or tell us what you need and we will tell you whether an existing plugin or a custom build is the better fit.
Tell us what you need WordPress to do.
A new website, a redesign, a client portal, a booking system, or a move from another platform. Tell us what you need and we will tell you how WordPress can carry it.
What happens next
- 01Introductory callUnderstanding the project, the organisation, and the brief.
- 02Discovery questionnaireThe detail we need before designing anything.
- 03Scope agreementDeliverables, timeline, and investment confirmed in writing.