Custom WordPress theme development

With custom WordPress theme development, your site gets a design built for your brand instead of a template, lean code that loads fast, and clean markup ready for SEO.

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why clients come

Why do companies leave a ready-made theme?

Most companies come to us with a redesign, or after an earlier attempt that did not work out. The site still runs, but it no longer fits the business. Usually, it is one of these cases:

  • A premium theme pushed to its limits. Every new change takes heavy code, and the site gets slower.
  • A page builder such as Elementor, Divi or WPBakery. The pages are heavy, the editor is confusing, and the team cannot change a page on its own.
  • A freelancer who did not finish. The project stopped halfway, or the freelancer disappeared.
  • Another agency or developer. The project dragged on, cost more than planned and still was not what the client wanted.

After an experience like that, a redesign can feel daunting, and it is hard to put your requirements into words for a developer. So we start with questions about what the site has to do and who will run it.
Some clients arrive having already compared a premium theme with a bespoke WordPress theme and made their choice. Others make it with us.

A custom WordPress theme project that starts from what your site needs
what matters

What makes a custom theme project work

In our experience, six things decide whether a custom theme project works. We build every theme around them, and they are fair questions to ask any developer.

A content model planned before the code

We agree on which pages, blocks and fields the site needs before development, so your team can edit every block without a developer.

The design approved first, then built exactly

Development starts from a design you have approved, and the theme reproduces it exactly, on every screen size.

Only the code the site needs

No page builder overhead and no plugins the site does not use. A lean theme is what makes the site fast.

Code another team can maintain

Clean, documented code without technical debt. If another team takes over, we pass the theme’s documentation on to them.

Redirects and metadata carried over at launch

We carry over the redirects, the page structure and the metadata, the parts of your site that search engines already know.

Checked across browsers and devices

Before launch, we test the site in different browsers and on phones, tablets and desktops, so every visitor sees it as designed.

Custom WordPress theme development services

what we build

How we build the theme

Custom WordPress development means the theme is written for your site alone.

We write a WordPress theme from scratch, or on a starter theme such as Underscores or Sage. A starter is a base of code with no design of its own: it saves the routine setup, so no ready-made template goes into your site.

The theme follows two things agreed with you: the approved design, which it reproduces exactly, and the content model, the types of content and the fields your team will fill in, such as services, case studies or team members.

The theme is the core of our WordPress development work: the same team designs it, builds it and launches the site.

A custom WordPress theme built only from what we agreed with you

What you receive at the end

At handover, you receive:

  • the theme’s source code in your repository;
  • a content model for the editor: custom post types, ACF fields, and Gutenberg blocks or ACF flexible layouts, depending on who edits the site;
  • a responsive layout for every device;
  • performance measured by Core Web Vitals, Google’s measures of loading, response and visual stability;
  • the theme deployed on your hosting;
  • the SEO, GEO and AEO setup, so search engines and AI answers can read the site;
  • all project files and the database, with the admin and environment credentials, at no charge.

After the final payment, the site, its code and its design belong to you. Your domain and hosting stay in accounts you own, and the admin logins are yours.

Everything you receive with your custom WordPress theme at handover
comparison

Custom theme or premium theme: what is the difference?

A premium theme is the faster and cheaper start. The difference is in what you get for the money, point by point:

Premium themeCustom theme
Starting priceA license from $58, plus the work to set it upFrom $1,000, the work included
Time to launchFaster: the theme is ready; the setup and the content remain to be doneLonger: the design and the code are made for your site first
DesignA ready design, the same on thousands of sites; your brand adapts to the themeA design for your brand; the theme adapts to the brand
SpeedLoads the code and scripts of every feature of the theme, even the ones your site does not useLoads only what your site uses
EditingThrough the theme's builder, with many settings; the layout is easy to breakThrough ready blocks made for your site; your team changes the text and builds pages, and the layout does not break

The custom theme’s $1,000 is the starting price of a landing page; a business website starts at $4,000.

 

A custom WordPress theme that stands out where premium themes all look alike
is it worth it

When does a custom theme pay off?

A custom theme is worth its price when a template starts to hold the site back. We tell clients it pays off when:

  • the brand and the precision of the design matter, and the site must not look like a template;
  • speed matters because your ads and your search results depend on it;
  • your team edits a lot, and a page builder slows it down;
  • the site will grow, and new pages should come from a library of ready blocks instead of rework;
  • a premium theme has been pushed so far that each change costs more than a new theme.

In the long run, you pay no theme or builder license fees and carry no technical debt. Hosting and premium plugins such as ACF Pro still have to be paid for, as on any site.

Why a custom theme pays off as the site keeps changing

Can WordPress themes be customized?

Yes, and sometimes customizing is the better choice. A small, simple site of a few pages that rarely changes does not need a custom theme: a ready theme or a page builder is enough. With a very tight budget or deadline, a ready theme gets the site live faster and cheaper.

If your current theme already covers most of what you need, we take on WordPress theme customization instead of a new theme. We change its templates, features and layouts through a child theme, so the theme’s updates do not erase the changes. The work is billed by the hour, from $20 an hour.

We tell you which fits you better. We rarely turn a project down, and only when it is beyond our expertise and we cannot guarantee the result.

Customizing your current WordPress theme instead of replacing it
editing

Can your team edit the site without a developer?

Yes. The theme is built around the people who edit it. Before any code is written, we agree on who updates the site and what they change, and the editor we choose depends on those answers.

Marketers who build pages every day get Gutenberg blocks designed for the sections of your site. Structured content, such as team profiles, a catalog or case studies, gets ACF fields, so every entry keeps the same form without manual fixes.

A page builder is not our default because it adds code to every page and slows the site. We use Elementor only when your team already works in it or you ask for it. When we replace an existing theme, we keep the editor your team knows, and nobody has to relearn their work.

Your editors change the text and build new pages from the ready blocks, and the layout holds. A new page takes minutes, without a developer. A new kind of block is development work, and we estimate it before we start.

Training for your team, by call or video, and written or video instructions for your editors are free on request.

Your team publishing a page in WordPress without a developer

Speed, rankings and AI search

performance

How fast will the site be?

Our benchmark for a custom theme is 95–100 points in Google PageSpeed. We check it at the QA stage, before the analytics and the ad pixels are installed.

The score comes from the theme itself: it loads only what a page uses. Third-party scripts, such as analytics, chat widgets or ad pixels, lower it once you add them, and that part of the score depends on what you install.

After launch, you can follow the speed yourself, in PageSpeed and in the Core Web Vitals report of Google Search Console.

The speed benchmark of a custom WordPress theme in Google PageSpeed

Will the site keep its rankings?

We protect them, and we do not promise them. When the theme changes, the project price includes this work:

  • an SEO audit before launch, to see which pages and queries bring the traffic;
  • a map of 301 redirects for every changed address;
  • the titles, descriptions, headings and schema markup, carried over;
  • the structure and internal links of the top pages, kept;
  • the new theme built and checked on a staging server, not on the live site;
  • a check in Google Search Console after launch for errors, indexing and rankings.

A theme by itself does not bring clients. Speed and an SEO base are a condition for rankings and inquiries, not a guarantee of them.

How search visitors still reach your pages after the theme changes

Will AI answers find the site?

AI answers in ChatGPT or Google’s AI Overviews draw on the same pages that search engines index, and Google’s Search Central sets no additional requirements for them. There are no special tricks, so we make the site readable. In every theme, we make sure that:

  • AI crawlers are not blocked in robots.txt, the CDN or the firewall;
  • the content is text in the HTML, rendered on the server, so crawlers that do not run JavaScript can read it;
  • the navigation, page structure, headings and internal links are clear;
  • the schema markup matches the visible text.

Together, these make up our GEO and AEO setup: the work for generative AI and answer engines. Whether an AI answer cites the site is up to the engine, so we do not promise citations.

A page built so both search engines and AI answers can read it
tools

What we build with, and what the theme connects to

We choose the tools based on the site and the team that will run it.

ACF Pro

Fields, flexible layouts and ACF blocks let your team fill in structured content, such as services or case studies, in a fixed format.

Custom Gutenberg blocks

Blocks written in React for the sections of your site, so your team builds pages in the editor WordPress already has.

Starter themes

Underscores (_s), Sage (Roots) or our own starter theme give the theme a tested base and save the routine setup.

Tailwind, SCSS and Git

Tailwind or SCSS keep the styles consistent, and Git keeps every change to the code on record for the next developer.

Elementor, when you choose it

If your team already works in Elementor or wants a page builder, the theme supports it.

WooCommerce

Themes for WooCommerce stores: the catalog, the product page, the cart and the checkout made to the design.

Integrations and custom plugins

CRMs such as HubSpot or Salesforce, Mailchimp, GA4, Zapier, Calendly or Intercom, and custom plugins for calculators, portals and forms.

Custom WordPress theme design services

design and migration

From your design, or ours

Bring a finished design in Figma, Adobe XD, Sketch or PSD, and we build the theme from it.

If there is no design yet, our designers make one in Figma, and development starts after you approve it. The design is included in our starting prices, and every project is estimated separately, by its own scope.

When a design is incomplete, with mobile versions, states or pages missing, we complete it, agree on the additions with you and include them in the estimate before work starts.

A website design completed for both desktop and mobile

Can you change a WordPress theme and keep content?

Yes. When the theme of a WordPress site is replaced, the content stays in the database and the new theme displays it. Where pages need the new blocks, we rebuild them.

Migrating from Wix, Squarespace or static HTML works too. We transfer the pages, posts and media to WordPress with the custom theme, and we keep the URLs or set 301 redirects from the old addresses.

Rebuilding pages into the new blocks and moving content by hand are separate lines in the estimate, named before work starts.

Your content kept when the WordPress theme changes
how we work

How we work, what clients say and who we are

About
Approach
Testimonials
Awards

Custom WordPress theme development experts since 2013

Custom WordPress themes are our core work: most of the projects in our portfolio are of this kind. F5 Studio was founded in 2013 and has completed more than 300 projects since. Our clients come from over 20 industries, from SaaS and fintech to manufacturing, healthcare and professional services.

One in-house team of 20+ people does the design, the development and SEO, GEO and AEO, so the theme is built for search from the start. Nothing is outsourced, and one project manager leads your project.

WordPress theme development services, step by step

01.

The brief and the content model

We start with what the site has to do and who will run it. Together, we list the pages, blocks and fields the site needs and decide who edits what. This content model shapes both the code and the editor your team gets.

02.

The design

Our designers make a mockup in Figma, or we check your design and complete what is missing. You approve the design before development starts, and we revise it until you do.

03.

Building on a staging server

We build the theme, the blocks, the fields and the integrations on a staging server, not on your live site. You get a staging link and can see the work as it takes shape.

04.

Content migration and SEO

We move the content, map 301 redirects for every changed address, and carry over the titles, descriptions and schema markup.

05.

QA

We test the site in browsers and on devices and check its speed against our PageSpeed benchmark.

06.

The launch

The site goes live on your hosting, and we check Google Search Console for errors and indexing.

07.

The handover

You receive the code in your repository and all the logins. Training for your team is free on request, and the first 30 days of support are free.

Reviews from F5 Studio clients

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Website for Cigar & Vape Review Platform

They delivered the site according to my needs. They’re good at what they do and worked effectively. They built the site quickly and were hard working.

Gebrin Alvarez
Blogger, Geodepuro

WordPress Development for Cybersecurity Company

The service they provide is absolutely fabulous, great communication and high-quality work. They are client-oriented. My projects were small, but they dedicated enough time to finish them.

Kateryna Shur
Project Manager, Resecurity

Website Dev. for IT Services Company

The project was completed on time, despite it being an atypical project. Communication was excellent. We communicated our questions and solutions upfront and their team was available often. There was no language barrier. They have a ‘customer first’ mentality that was more evident as the project moved along.

Reinis Zitmanis
CEO & Programmer, Itero IMCG

Website Development for Book Publishing House

The works were performed on time and with high quality. Specialists qualitatively processed the technical task and added their own vision on how to improve the result. The site works stably, is indexed by search engines. Their specialists truly cared about results. The finished project exceeded expectations.

Nellya Raina
Сhief Editor, Read In Ukrainian

Fast and efficient website delivery

Professionals, excellent communication. They created the website quickly and efficiently.

Aleksejs Samsurs
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Ratings from our clients

The badges show our ratings on Clutch and Google, given by clients in their reviews, and the awards F5 Studio has received.

4.9
(17)
5.0
(225)
5.0
(8)
first week

What happens in the first week, and what we need from you

We start within a week after you sign the contract and make the first payment. The schedule we agree on holds as long as you answer within two working days.

A kick-off call with your project manager

One project manager leads the project from start to launch, and you talk to the team through them.

The brief and the content model agreed

Together, we settle the pages, blocks and fields of the site. It is the first stage of the project.

Access to your accounts

You give us access to the current site, the hosting, the domain, the repository and the analytics.

A project plan with dates

You receive a plan with the dates of every stage, up to the launch.

Your content

The texts, photos, logo and brand book come from you. If you need the texts written, we can do it as separate work.

One person who approves

One person on your side answers our questions and approves the stages, within two working days.

How much does a custom WordPress theme cost?

Project type
What it's for
Start from
Landing page

2–4 weeks. One landing page built from section blocks your team can edit and rearrange, with a form that sends leads to email or a CRM.

$1,000+
Hours of work
Business website

6–10 weeks. A business website of 10–25 pages: page templates, custom post types, ACF fields and a library of blocks for new pages.

$4,000+
Hours of work
WooCommerce store

8–12 weeks. The catalog, product page, cart and checkout made to your design, with filters and search, payments and shipping, and a CRM or email marketing integration.

$6,000+
Hours of work

Every price includes a design in Figma or the build from yours, revisions until approval, a responsive layout, 95–100 in PageSpeed before analytics, the SEO, GEO and AEO base, GA4, Tag Manager and deployment.

Premium plugin licenses such as ACF Pro and the hosting are paid separately. Work outside the agreed scope is billed by the hour.

portfolio

Custom WordPress themes we have built

Accounting firm website arrow arrow
'23
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WordPress development, Corporate website, Website development, UX and UI
Affiliate marketing website arrow arrow
'23
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WordPress development, Corporate website, Web design, UX and UI, Brand identity, Logo design, Technical SEO, On-page SEO
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'18
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UX and UI, Web design
Academic coaching website arrow arrow
'21
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Website development, UX and UI, Web design, WordPress development
Aluminium manufacturer arrow arrow
'25
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Corporate website, Website development, WordPress development, Web design, UX and UI, Logo design, Technical SEO, On-page SEO
Auto body shop website arrow arrow
'20
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Corporate website, WordPress development, Website development, Web design, UX and UI
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faq

Questions about custom WordPress themes

Can ChatGPT build a WordPress website?

It can help, but it does not replace the team. AI speeds up routine code. The content model, the design for your brand, an editor your team can use, the security and the QA are still done and checked by our developers.

An AI site builder suits a quick, simple site. A site your team edits every day, and one that must be fast and secure, needs a theme built by developers.

How do you protect the site?

Before launch, we set up the basics of WordPress security, each against a common kind of attack:

  • HTTPS, so the data between the site and its visitors is encrypted;
  • security headers, which tell browsers to block common script and framing attacks;
  • a login page with limited attempts and its own address, against password guessing;
  • an admin name other than “admin” and a custom database prefix, so attackers cannot rely on the defaults;
  • no unused plugins or themes, since each one is extra code to attack.

We also update WordPress, the plugins and the theme after testing the updates on a staging copy, and set up backups on your server.

How does support work after launch?

The first 30 days after launch are free: we fix anything that does not work as agreed, answer your team’s questions and make small edits. After that, support continues in one of two ways: by the hour, from $20 an hour, or as a monthly care plan.

Your hosting and domain stay in accounts you own. We set them up and can administer them for you, but we do not host client sites on our own infrastructure

How do payments work?

You choose the format that suits you. The base option is 50% at the start and 50% at handover. The other is payment by stage, with an advance paid before each stage begins.

Do you sign a contract and an NDA?

Yes. Before work starts, you sign our standard contract with the agreed scope and price attached, and we share the template before you decide. If you need an NDA, we sign one as well.

Is it safe to give you access to our hosting and domain?

Yes. Where your hosting allows it, you create separate accounts for us with limited rights, and we show you how. Some hosting providers cannot share access that way; then you share your own account, and our contract binds us not to disclose it. We can also sign an NDA.

After launch and the 30 days of support, you close our accounts or change the password, unless we stay on to support the site. We tell you which access to close.

Who answers our questions, and how fast?

A manager answers your inquiry within one business day. During the project, your questions go to the project manager and get an answer within one business day too.

What changes the price and the timeline?

Five things move the price and the duration of our custom WordPress theme service:

  • the number and the complexity of the page templates;
  • the amount of design work: a new design by our team, or a build from your finished design;
  • custom Gutenberg blocks in React and custom plugins;
  • integrations beyond the standard plugins;
  • the migration from your old site, especially when content is moved by hand.
Can agencies order a theme under their own brand?

Yes. We build custom WordPress themes for digital and web agencies as a white-label partner. We do not contact your client and say nothing in our own name.

We sign an NDA with your agency, work in your task tracker and chats, and hand the code over to your repository or your client’s, with no F5 Studio credits in it. Agencies work with us project after project, without a new contract each time, as part of our web development outsourcing.

contact

Let’s plan your custom theme

Start with a free consultation or a free estimate, with no pressure to commit. Tell us what the site has to do, and we will suggest the way to build it.

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