Custom WordPress Theme Development Services

Boost your team's capacity by outsourcing custom WordPress theme development to our white-label team. From complicated layouts and animations to custom eCommerce solutions powered by Wordpress CMS
Ideal for

Your agency from these industries

Marketing Agency
without in-house development department
Design Agency
who creates amazing Figma designs and require pixel perfect development
SEO Agency
when SEO results rely on website tech setup and loading speed
Marketing Teams
who need constant changes on their website for successful campaigns

Why agencies choose a custom WordPress themes over page builders

Options
Page builder
Custom theme
Core setup
Bloated Parent theme/builder + child theme
Lean custom theme
Page speed
Usually below 65/100 by page speed
Usually 75-95 by page speed
Design fidelity
Limited by builder widgets
Pixel-perfect to Figma
Maintenance
Builder and plugin updates can break layouts
Fewer dependencies to update
Editing type
Visual builder
ACF / Gutenberg blocks
Can client harm the website?
Fully mess-up the layout
Can edit the content, but not break the layout
Consistency
Inconsistent.
Every component can be edited on the page and break design system
Consistent
Most components are global
Licence cost
Yearly $50+
Free when signed for maintenance plan
Free with Gutenberg, $39+/year with ACF
Free when signed for maintenance plan
Best for
Landing pages
Or smaller websites, which easy to maintain
Agency work that needs custom design and performance
Typically larger websites
Typical problems

You can solve with the help

Of our WordPress development services

What you get with our WordPress custom theme development services

Most of these results will be available starting from day 1

Custom written theme under your agency brand

Pixel-perfect implementation of the design approved by client in Figma

Fully fluid website on any breakpoint from 360px to 2560px. No more weird looks on screens between two major breakpoints

30-day bug free guarantee and free fix in case any bug is spot on productions

Loom videos with guide for client how to add/edit/remove content using admin panel

Process

Our custom theme development process

How you should expect websites to built
  • Estimate and fixed price quote

    After sharing all the details and project requirements - you'll get a fixed price quote with 98% estimate accuracy from our white-label team. The quote is based on more than 15 000 hours of work on similar projects, so you'll finally have the real control over project timeline. From "guess-timetes" to accurate data-driven estimates
  • Milestones set up

    Common approach is 50% deposit and 50% before-launch. For bigger websites it could be 3 milestones: 33% deposit, 33% when 50% of pages are developed and 33% before launch.
  • Development

    Page-by-page website building based on defined toolset: ACF Flexible, Gutenberg blocks or page builders
  • QA and pre-live checklist

    Quality assurance on design accuracy and tech audits to make sure website is ready to launch.
  • Launch

    Moving website from staging to production environment
  • Maintenance and on-going development

    Optional Monthly care plan, support and on-going development for this website
What are the parts of

Remote tech department

That will make the biggest difference for your agency

Codelibry system

helps agencies to increase margins by reusing the components from previous projects

Library of solutions

Each unique case is saved. Same request from different client will be solved faster

In-house speed

Book meetings, solve issues within the same day with the remote tech department

Why agencies choose Codelibry as their custom WordPress theme development company

When agencies are thinking about website development in general they have 3 options: in-house hire. Freelancers and White-label parter like Codelibry. In reality they need designer, developer, QA and PM to deliver this kind of project to the client – and it’s expensive or require a ton of a time. With Codelibry they get all 4 at fixed-price. Making final queality of the launched product exceptional which is important when a lot of website are vibe-coded with AI and look too similar.

testimonials

What Our Clients Say

Trusted by clients worldwide:

100% Job Success on Upwork

Top Rated on Upwork

4 reviews on linkedin

2 review on Clutch

Stuart Neal from Nextgen Marketing

Stuart Neal

Director of Operations at Nextgen Marketing

We have worked with Vitalli and his team for well over a year now and will continue to do so in the future.Having the confidence in an agency that allowed us to scale up and down development resources, as and when needed, has really made a positive difference to our agency.
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May 3, 2026
Mark Bozinovski from Rocket Saas photo

Mark Bozinovski from Rocket Saas

CTO at RocketSaas

I highly recommend Vitalii and the team at Codelibry.Vitalii’s great leadership skills, combined with his approachable personality, make working with him a true pleasure. Their user-friendly dev approach ensures solutions that are both effective and easy to use. A top-notch team to collaborate with!
View Full Review
June 27, 2025
Hampus Lind photo

Hampus Lind from TimeApp

Product Manager at TimeApp

I highly recommend working with this agency. Their consistent delivery of exceptional results, combined with a proactive, solutions-oriented mindset, has made them an invaluable partner to our team. They reliably meet—and often exceed—deadlines, while demonstrating a remarkable ability to adapt to both technical requirements and organizational dynamics.After several successful collaborations, we've chosen to transition away from previous partners in favor of continuing our work with this age...
View Full Review
June 27, 2025
Axel Amer from BlueNest photo

Axel Amer from Blue Nest

Founder at BlueNest agency

We collaborated with Vitallii and his team on a special (and quite challenging) WordPress project, and they delivered outstanding results.They consistently went above and beyond to solve complex problems, communicated clearly throughout the process, and delivered everything on time.It was a real pleasure working with them, and I highly recommend Vitallii for any WP development project.
View Full Review
June 27, 2025
How we drive results to digital agencies

Case study

In this case study we show how we helped our partner from the UK to handle 28 projects during 15 month of collaboration without hiring, onboarding in-house devs or freelancers.

Nextgen Marketing x Codelibry case study cover
Marketing agency from UK chose white-label tech department instead of in-house hire

28 wordpress projects. 15 month. 98% estimate accuracy.

Read more
FAQs

Frequently Asked Questions

List of common questions you would like to ask

  • Custom theme starts from $490 for up to 1 page website, $990 for website up to 5 pages, $1750 for website up to 10 pages, $2490 for website up to 15 pages. Bigger project or with custom functionality are estimated separately based on hours required for the build and 40 USD/hour rate.

  • Usually it take from 1 week to 6 weeks for most common projects from start to launch, which breaks into:

    • 1 page website: 1 week
    • 5 page website: 1-2 weeks
    • 10 page website: 2-4 weeks
    • 15 page website: 3-6 weeks
    • eCommerce website 3-6 weeks
  • Yes. They edit text, images and buttons and reorder sections in the WordPress backend. Bigger changes come to us.

  • We use both – depends on the brief. If brief does not specify the stack we’ll use ACF Flexible content for pages and post types and leave Gutenberg for articles and blog posts only.

  • Yes, but most existing themes does not worth converting – it’s makes more sense to redesign and optimise the website along the way rather than just do direct conversion

ARE WE A GOOD FIT?

Let's find out on a discovery call

Digital agencies have own unique needs. In order to understand your current needs, project setups, issues and plans – let’s book a FREE discovery call and dive into business and how we can boost your agency

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