TREN

Office

Esenyurt / İstanbul

Monday–Friday · 09:00–18:00 (UTC+3)

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CUSTOM WEB DEVELOPMENT

OCTOBER 2026

Custom web development.

We start where an off-the-shelf theme is not enough. We develop web applications, portals and admin panels designed around how your business works. We build a structure whose content is managed with a headless CMS, that loads fast with Astro and Next.js, and that expands as your needs grow.

CUSTOM PACKAGE

£2,690 · €3,090

Starting price, one-off. Delivery in 10–16 weeks; 1 year of free technical support included.

What do you develop?
Corporate websites, customer and dealer portals, application and quote flows, and admin panels.
Which technology?
Astro and Next.js on the front end, a Payload-based headless CMS for content; custom APIs where needed.
How long does it take?
For the Custom package, the typical timeline is 10–16 weeks; large projects go live in stages.
What does it cost?
From £2,690 · €3,090; the exact amount depends on modules, integrations and the number of languages, and is set in the quote.

WHAT WE DEVELOP

The scope of custom development.

Every project is different, but a solid web application always has these layers.

  1. 01

    Discovery and information architecture

    We map who does which task, and in what order, and build the page and data structure around it.

  2. 02

    Interface and experience design

    Screens designed for your brand that shorten the work of visitors and of your team in the panel.

  3. 03

    Headless CMS and admin panel

    A panel for editing content without code, with roles and permissions, and a draft-and-publish workflow.

  4. 04

    Fast front end

    Pre-built pages with Astro or Next.js; a structure built to Core Web Vitals criteria.

  5. 05

    Forms and workflows

    Multi-step application and quote forms, KVKK consent (Türkiye’s Personal Data Protection Law), tracking of submissions in the panel, and notifications.

  6. 06

    Multilingual structure

    A separate URL for each language, hreflang links and per-language content management in the panel.

  7. 07

    API and data connections

    API connections and data transfer for exchanging data with your existing systems.

  8. 08

    Launch, monitoring and security

    Deployment, error monitoring, backups and updates; technical support after handover.

PROJECT-SPECIFIC

What we add as needed.

We build the following specifically for your project, to the extent your business needs; scope and price are set in the quote.

Portal

  • Customer and dealer portal
  • User login and role management
  • Appointments and bookings
  • Application tracking screen

Integration

  • ERP (Logo, Mikro, Netsis)
  • CRM
  • Payment infrastructure
  • e-Fatura and e-Arşiv (Türkiye’s e-invoicing systems)

Infrastructure

  • Installation on your own server
  • Single sign-on (SSO)
  • Redundant set-up

Data

  • Reporting dashboard
  • Excel and CSV export
  • AI-assisted site search

WHICH BUILD?

Not every site needs custom development.

The right build is chosen according to the job the site has to do. All three routes have their place; we work out together in the discovery call which one fits you.

  • Website builder

    Drag and drop, monthly subscription

    When it is right
    Getting a brochure site of a few pages online quickly.
    Where it struggles
    When you need a flow, integration or design that the platform does not allow.
  • WordPress and plugins

    Ready-made themes, a wide world of plugins

    When it is right
    A content-heavy corporate site or blog with a standard structure.
    Where it struggles
    As the number of plugins grows, so does the burden of speed, security updates and compatibility between plugins.
  • Custom development

    Headless CMS + Astro / Next.js

    When it is right
    Work with its own particular flow, integrations or multilingual scale.
    Where it struggles
    It takes discovery and design effort; the upfront cost is higher than off-the-shelf solutions.

AN HONEST MATCH

Who it suits, and when it is not enough?

WHO IT SUITS

  • Companies hitting the limits of an off-the-shelf theme or plugins
  • Those who want to bring an application, quote or order flow onto their website
  • Those who want to manage several languages, brands or branches from one panel
  • Corporate websites where speed and security matter as much as sales

WHEN IT IS NOT ENOUGH

  • For a brochure site of a few pages, the Essential or Professional package is the better and faster choice.
  • If the scope is still unclear, discovery should come first; otherwise both price and timeline are guesses.
  • If only the look has aged, a website redesign rather than custom development may be enough.

PROCESS

How do we work?

  1. 01

    Discovery

    We map the workflow, the users and the integration needs.

  2. 02

    Architecture and design

    We present the data structure, screens and technical architecture for your approval.

  3. 03

    Development

    We develop in stages and show each stage on a test address.

  4. 04

    Testing and launch

    We go live after speed, security and form tests.

  5. 05

    Support

    We provide technical support for 1 year and develop further as needed.

PRICE

Custom development price.

This is a starting price; the exact amount is set in a written quote based on the number of modules, integrations and languages.

CUSTOM

from £2,690 · €3,090

one-off · 10–16 weeks · excl. VAT; no Turkish VAT for clients outside Türkiye

For corporate scale: multilingual and AI-assisted — scoped per project.

  • Multiple languages + international SEO
  • Bespoke design + comprehensive content and data analysis
  • Advanced performance, security + continuous monitoring
  • AI-assisted admin panel + advanced caching
  • Google/Yandex map listing + licensed photos/videos
  • HR and quote forms, blog/news/events sections
  • 1 year of free technical support
Request a quote

Portal, ERP/CRM and payment integrations, and your choice of hosting, are listed as separate items in the quote. All web packages are on the web design prices page.

FREQUENTLY ASKED

Questions about Custom Web Development
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How much does custom web development cost?

Our Custom package starts from £2,690 · €3,090. The exact amount depends on the number of modules (portal, form flows, panel screens), integrations and languages; after discovery, we give you an itemised written quote.

How long does custom web development take?

For the Custom package, the typical timeline is 10–16 weeks. On projects with a wide scope, we launch the most-used section first and add the rest in stages.

What is a headless CMS, and what does it bring?

It means the content management panel runs separately from the visible front of the site. The panel holds only the content; the site takes that content and generates fast, pre-built pages. This makes the site faster and more secure, and the same content can be used across different channels such as a website, an app or an AI assistant.

Can we move from WordPress?

Yes. We move the content to the new panel and redirect the old URLs Google knows to their new equivalents; we made this move for Kampüse Hoş Geldin while keeping the design.

Will it integrate with our existing systems?

We build integrations with systems that offer an API or data transfer (ERP, CRM, accounting, payments) specifically for your project. During discovery, we clarify which data flows in which direction, and how often.

What happens after launch?

The Custom package includes 1 year of free technical support. After that, we plan maintenance and new development separately, as needed.

CUSTOM WEB DEVELOPMENT

Let’s talk about your project.

Fill in the form; we will get back to you within 24 hours with the scope, timeline and price in writing.

SERVICES

What shall we work on?