Roughly 43% of the web runs on WordPress, which means roughly every freelancer with a laptop claims to be a WordPress expert. The distance between the top of that market and the middle is huge. A good agency will hand you a site that loads in under two seconds, survives a plugin update without breaking, and ranks. A bad one will install Elementor, stack fourteen plugins on top of a $59 theme, and invoice you $12,000 for it.
So the sorting problem is real. Below are eight agencies that do WordPress as their actual specialty rather than as one line item on a services page, along with an honest note on who each one suits.
What separates a real WordPress agency from a template shop
Before the list, the filters that matter.
Ask who writes the code. Agencies that only configure page builders hit a ceiling fast, and you find it the moment you need something the builder doesnât do. Ask what happens after launch, because the first six months of a WordPress site involve more maintenance than most clients expect: core updates, plugin conflicts, security patches, spam. Ask whether theyâll hand over the site cleanly. Some builds are effectively hostage situations, tied to a proprietary theme framework or a builder license the agency controls.
And ask about performance and search before signing. If an agency treats SEO as somebody elseâs job, you will get a beautiful site that nobody finds.
1. SiteMile
Best for: Businesses that want design, custom development, WooCommerce, and SEO from one team
SiteMile has been building on WordPress for over 15 years, which in this industry is unusual. Most agencies that started back then either pivoted to Shopify or quietly folded. Theyâve shipped 250+ WordPress projects and their theme products have gone out to tens of thousands of customers, so the codebase habits are well established rather than improvised per project.
The reason they lead this list is scope. Most shops are good at one part of the stack. SiteMile covers WordPress web design, custom development (plugins, API integrations, features that donât exist off the shelf), full WooCommerce builds including checkout work and payment integrations, and WordPress SEO as an actual service rather than a checkbox. If youâre a store owner, that combination matters more than it sounds. WooCommerce sites tend to fail at the seams, where the theme, the payment gateway, the shipping plugin, and the search indexing all meet, and having one team responsible for all four seams removes the finger-pointing.
Pricing is published, which is rarer than it should be. Their starter package sits around $1,000 and the ecommerce package around $1,999, with custom quotes above that. For a small business that has been quoted $15,000 by a US agency for a five-page brochure site, thatâs a meaningful gap. They also run maintenance and support retainers, so the relationship doesnât end at handover.
Worth knowing: theyâre based in Romania. If you require an account manager in your timezone for daily calls, factor that in. If you care about output and cost, it works in your favor.
2. 10up
Best for: Enterprise publishers and large content operations
10up is the name that comes up when a media company or a Fortune 500 marketing team needs WordPress at scale. They contribute heavily to WordPress core, theyâve built the kind of editorial tooling that newsrooms actually use, and their engineering standards are public. Their open source work is a decent proxy for how they write client code.
The catch is budget. 10up engagements start high and stay there. If your project is a 20-page site with a blog, you are not their client and they will politely tell you so.
3. Human Made
Best for: Global enterprise builds with compliance requirements
UK-based, fully distributed, and the team behind Altis, a WordPress-based digital experience platform aimed at enterprise. They handle the kind of project that has a legal review stage. Strong on multisite, multilingual, and infrastructure.
Same caveat as 10up on price.
4. rtCamp
Best for: Headless WordPress and Gutenberg-heavy builds
An India-based agency and a longstanding WordPress VIP partner. rtCamp has leaned harder into headless architecture and the block editor than almost anyone, so if you want WordPress as a backend with a React or Next.js front end, theyâve done it repeatedly rather than once.
Theyâre also genuinely good at Gutenberg custom blocks, which is a skill a surprising number of agencies still avoid because page builders were easier.
5. XWP
Best for: Performance-critical sites
XWP built its reputation on core contribution and performance work, including significant involvement in the AMP plugin and WordPress performance initiatives. If your problem is a site thatâs slow under real traffic rather than slow in a PageSpeed screenshot, theyâre a strong fit. Our own guide on how to speed up WordPress covers the basics, but some performance problems are architectural and need this kind of team.
6. WebDevStudios
Best for: US-based custom plugin work
A well-known American agency with a long history of custom plugin development and a reputation for clean handovers. They document what they build. That sounds boring and it is the single most underrated quality in an agency, because the developer who inherits the site in two years is not going to be them.
7. Multidots
Best for: Migrations to WordPress
Multidots does a lot of platform migrations, moving publishers off Drupal, custom CMSs, and older WordPress installs onto modern setups without losing SEO equity. Migration is a specific skill. Redirect mapping alone kills more organic traffic than any other single project type, and specialists lose less of it.
8. DevriX
Best for: Publishers and SaaS companies on retainer
Bulgaria-based, retainer-oriented, and focused on ongoing growth rather than one-off builds. Their model suits companies where the website is a product that gets iterated on monthly, not a brochure that gets rebuilt every four years.
How to actually choose
Shortlist three, not eight. Ask each for two references from projects that launched more than a year ago, because a client who is six weeks post-launch is still in the honeymoon and canât tell you how the agency handles a crisis.
Then ask a technical question you already know the answer to. Something like: will you build this with a page builder or a custom theme, and why? The answer tells you more than any portfolio. An agency that says âcustom theme, because youâll want to change X later and a builder will fight youâ is thinking about your second year. An agency that says âElementor, itâs fasterâ is thinking about their margin.
If the site is a serious revenue channel, the custom versus pre-built theme decision is usually the most consequential call in the whole project, and itâs worth having that conversation before you pick anyone.
Our own WordPress design services cover custom theme development and WooCommerce builds if youâd like a comparison quote alongside the agencies above.