Custom web development services
Custom web development is building features that a standard platform or off-the-shelf plugin does not provide. Adwortise builds custom plugins, themes, integrations, calculators, portals and booking systems, and tells you when a ready-made option is the better choice.
- Plugins, themes and integrations written for your process
- Honest advice on when a ready-made plugin is enough
- Built on a staging site and handed over with documentation
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- Free auditbefore any commitment
- Fixed quoteand a dated schedule before work starts
- Core Web Vitalsmeasured before every launch
- 1 managerdedicated to your account
Explained
What is custom web development?
Custom web development is writing code for a requirement that your platform, theme or existing plugins cannot meet. The result is a feature built around your process instead of a process bent around a plugin.
It differs from standard site building, which assembles a site from existing themes and plugins. Custom work is added where that assembly stops, and the rest of the site can stay standard.
Custom feature scoping
- Quote calculatorCustom build
- CRM lead syncAPI integration
- Contact formExisting plugin
- Stacked booking pluginsReplace
- Manual lead copyingAutomate
What you get
What does custom web development include?
- Custom plugins and themes
- Code written for your site, structured so that it can be updated and maintained by another developer.
- CRM and API integrations
- Connections that send form leads, orders or bookings to a CRM, email platform, payment provider or internal system through its API.
- Calculators and quote tools
- Interactive tools that take visitor input and return a price, estimate or recommendation.
- Portals and member areas
- Login-protected areas where customers or staff view documents, orders or account details.
- Booking and scheduling
- Booking flows with availability rules, confirmations and calendar sync.
When you need it
When is custom development worth it?
- Worth it: the feature is central to how the business earns money, no plugin does it, or several plugins would have to be stacked and patched together.
- Worth it: a manual task is repeated every day, such as copying leads into a CRM by hand.
- Not worth it: a maintained plugin already does the job, or the need is a small design change that a theme setting covers.
- Not worth it: the requirement is still unclear, because custom code is costly to change once built.
Request a free website reviewNo obligation. We reply by email.
Process
How does a custom build work?
- Requirements We write down what the feature must do, who uses it and which systems it connects to.
- Technical plan We choose between a plugin, a custom build or a third-party service and agree the scope in writing.
- Build and review We develop on a staging copy of your site and you review working versions before launch.
- Launch and handover We deploy, test the live feature and hand over documentation. The site and code stay in your ownership.
Request a free website reviewNo obligation. We reply by email.
Pricing
How much does custom web development cost?
This service is quoted after a free audit, because the price depends on the scope of work. The price depends on the number of features, the systems they connect to and how much testing they need.
Frequently asked questions
Should I build a custom plugin or use an existing one?
Use an existing plugin when it is actively maintained and covers your requirements. Build a custom plugin when no plugin fits, or when combining several would cost more to maintain than one purpose-built tool.
Can you connect my website to my CRM?
Yes, when the CRM offers an API or a supported integration method. We map which form fields go to which CRM fields and test that every lead arrives.
Will I own the custom code?
Yes. Your website, hosting and accounts stay in your ownership, and we hand over documentation so another developer can maintain the code.
Does custom development slow a website down?
It can if the code is written carelessly. We build features to load only where they are used and check page speed before launch.