Choosing a WordPress agency can feel harder than it should. Most agencies sound confident. Most have good-looking case studies. Most can talk about design, development, hosting, support, SEO and performance. Most can tell you they have plenty of experience.
But if you are not technical, how do you know whether an agency really understands WordPress properly?
That question matters because a WordPress site can look fine at launch and still become difficult to manage six months later.
The theme might be built on an unstable foundation ground, the plugin stack might be super bloated, updates might feel risky and the editor experience might be slow and unresponsive.
Hosting is likely not fit for purpose, code and integrations might be unclear and undocumented and the original build might work visually, but fail operationally or under any sort of stress.
I actually covered some of the wider commercial and working relationship points in our earlier guide to working with a WordPress agency. That post looked at agency partnership, projects, hosting, support, long-term relationships and when an agency is the right choice.
This post looks more closely at the technical side of things.
The problem with judging WordPress work from the outside
From the outside, two WordPress websites can look very similar. They may both have a polished homepage. They may both use good imagery. They may both load well during a sales demo. They may both give your team a working admin login.
But under the surface, they may be completely different.
One may be built with maintainable blocks, clear templates, sensible fields, documented integrations and a controlled deployment process. The other may be held together by page-builder layouts, plugin dependencies, hidden theme hacks and undocumented custom code.
The difference may not be obvious on launch day.
It becomes visible later, when you need to change something.
That is why technical depth matters. A strong specialist WordPress agency should not just be able to make a site look good. It should be able to explain how the site is structured, how it will be maintained, what risks exist, and how future changes can be managed safely.
Good agencies talk about trade-offs
One useful sign of technical maturity is how an agency talks about decisions and compromises.
Weak answers tend to sound absolute. Everything needs a plugin. Everything needs to be custom. Every problem needs a rebuild. Or worse, “that is just how WordPress works”.
Better agencies will explain why something should be custom, why something should use native WordPress functionality, why a plugin is appropriate, why a rebuild may or may not be needed, and what each decision means for the future.
For example, if you ask whether a feature should be built as a custom plugin, the answer should not just be yes or no.
A better answer should consider how business-critical the feature is, whether a reliable plugin already exists, how much control is needed, who will maintain it, and whether it affects performance, security or future flexibility.
We know when to use the strengths in WordPress when to extend it and when not to fight the WordPress system if it is not the right tool.
Ask how they approach maintainability
Maintainability is one of the most important things to ask about. It is also one of the easiest things to ignore during a pitch but it is a key part of the WordPress ecosystem because WordPress it not static, it grows and evolves on a regular basis with updates to core and plugins happening sometimes every week.
A site that is not maintainable becomes expensive slowly. At first, everything seems fine. Then small changes take longer. Updates become stressful. Developers need more time to understand the codebase. New features become harder to estimate. The team starts avoiding changes because nobody is fully confident what will happen.
Good agencies think about maintainability from the start and know that a website like this will keep working fine for a short period but you need a long term plan to bring things in line or you’ll end up with failure.
This is where website and web app development projects need to be judged on more than just how they look or the design output. The build needs to support the organisation years after the launch and not just impress stakeholders during the project.
Look closely at the editor experience
A technically strong WordPress agency should care about the editor experience. That does not mean giving editors unlimited freedom to break things. It means giving content teams the right level of control.
The admin experience should be clear, structured and manageable. Editors should understand where content goes, what each block does, how reusable components work, and how to create pages without needing developer support for every small change.
It wont’ be simple, modern WordPress editing can be a steep learning curve, but it should be intuitive with clear options and examples to follow because a website that is technically clever but horrible to edit will still cause problems.
Do not ignore hosting and servers
Hosting matters with WordPress. Staging sites matter. Backups (and the ability to rollback) matter. Deployment of code matters. Monitoring speed and uptime matters. Caching is really matters. Security really really matters.
A site can be beautifully designed and still be a fragile mess because the hosting setup is wrong, backups are unclear, or nobody knows how to test changes safely. This is why WordPress hosting and migrations should be part of the technical conversation, not an afterthought.
A good agency should be able to explain where the site will be hosted, how staging works, how backups are handled, what happens if an update breaks something, and whether the site needs specialist hosting or infrastructure support.
Sometimes the current setup is fine. Sometimes it needs better configuration. Sometimes it needs monitoring and process. Sometimes it really does need a migration.
Understand their approach to plugins
Plugins are one of the biggest sources of long-term WordPress risk. That does not mean plugins are bad. Good plugins are one of the strengths of WordPress.
The problem is careless plugin use. I’m talking 30 or 100 plugins sitting on a site, some active, some not, we’ve seen it, time and time again.
A site that uses plugins without a clear reason can become harder to update, slower to load and more difficult to maintain. Over time, nobody knows which plugins are essential, which are legacy, which are duplicated, and which are creating risk.
A technically strong agency should be able to explain why important plugins are used, how plugin quality is assessed, when custom development is better, and what happens if a plugin becomes unsupported.
If your existing site already has a complicated plugin stack, the first step is often not to add more work on top. It is to understand what is already there.
That is where WordPress rescue and reliability becomes important.
Ask what happens after launch
A lot of agency pitches focus heavily on the project.
A typical proposal inclides:
- Discovery.
- Design.
- Development.
- QA.
- Launch.
- Post-Launch Party.
A strong agency should have a clear answer for what happens AFTER launch because for a business-critical WordPress site, launch is not the end of the relationship. It is the point where the site starts being used properly.
That is when new requests arrive. Campaigns change. Integrations evolve. Plugins need updating. Content teams find better ways to work. Security patches appear. Performance shifts. Stakeholders ask for improvements.
This might include SLA support, Flexible Package hours, hosting support, security updates, performance monitoring, roadmap planning, improvement work and new feature development.
This is why WordPress support and growth plans are not just a bolt-on. They are part of making sure the investment of a shiny new projecy continues to pay for itself.
Red flags to watch for
If an agency cannot explain its technical decisions clearly, that is a concern. If every problem is solved with another plugin, that is a concern. If every issue requires a rebuild, that is also a concern.
Be careful if hosting is treated as someone else’s problem, if there is no clear staging process, if the editor experience is ignored, or if the proposal is polished but the technical process is vague.
If they are a “yes” agency and allow any plugin you find to be installed, with no pushback or query, even if it is the right call, this is a problem.
A good agency should make complex things easier to understand and work with you to make things happen in a clear and controlled way.
If the conversations leave you more confused or worried then that is a signal to find a new agency.
Good questions to ask a WordPress agency
You do not need to ask deeply technical questions but you need to ask questions that reveal how the agency thinks about these things.
Ask: “How do you decide what should be custom and what should use existing WordPress functionality?”
This shows whether they understand trade-offs. Big budget, long timescales, it should always be custom for most things. But, if you end up getting a “custom online sales platform” type proposal when the reality is you should be using a plugin like WooCommerce then it’s time to push back.
Ask: “How do you make sure the site is maintainable after launch?”
This shows whether they think beyond delivery or if they are just looking for a short-term build.
Ask: “What does your staging, testing and deployment process look like?”
Any decent technical WordPress agency will easily be able to not only answer this but also potentially show you a demo of how this works. If not. Walk away.
Ask: “What happens if we do not know whether to rebuild or improve the current site?”
That last question is especially important because if they immediately push you for a rebuild, be careful. Sometimes a rebuild is right, but often the first step should be a technical review followed by a long term update plan.
When the first step should be a reliability review
If your current WordPress site is already causing concern, choosing an agency is not just about who can build the next version.
You may be dealing with slow pages, risky updates, unclear plugins, old custom code, poor hosting, broken forms, fragile templates or agency handover issues. The site may still work, but your team may no longer trust it.
At that point, the question is not simply:
“Which agency should rebuild this?”
More like…
“What is actually wrong, what can be stabilised, and what should happen next?”
That is why we created the WordPress 5-Day Reliability Sprint which is a focused way to review a slow, fragile or hard-to-manage WordPress site before making bigger decisions.
The service helps identify key risks, make practical fixes where possible, and recommend the clearest route forward. That route might be support, hosting, migration, phased improvement or rebuild.
How this links to working with a WordPress agency
Our earlier post, The Complete Guide to Working With a WordPress Agency, explains the wider agency relationship: projects, support, hosting, long-term partnership and how a good agency relationship reduces risk over time.
That post will help you understand what a WordPress agency relationship should include. This one helps you judge whether the agency has the technical skills and maturity to support that relationship properly. If the technical foundations are weak, the relationship becomes stressful. We know, because we see it every day.
We have a lot of sites that we look after that need a rebuild but the time isn’t right or the budget isn’t there, this is the reality of what we do but the key point is to make the client aware of this very early on before it becomes a costly problem and remember that if your client/agency relationship is weak, technical problems become harder to solve.
What a good WordPress agency should give you
A good WordPress agency should give you more than a website. This is key. Do not settle for “just a website” ensure you have a proper business platform and have the confidence that it is…
- Confidence that the site is built properly
- Confidence that updates can be managed
- Confidence that the plugin stack is understood
- Confidence that hosting is not a weak point
- Confidence that your team can edit content safely
- Confidence that future improvements will not start from zero
- Confidence that there is a team ready to help when something changes or breaks
Need help understanding where your WordPress site stands?
If your WordPress site is difficult to update, slow to change or hard to trust, Make Do can help you understand the right next step.
Not sure what to do next?
If your WordPress site has become slow, fragile, risky to update or hard to improve, start with our WordPress 5-Day Reliability Sprint.
In five focused days, we review the current setup, identify the biggest risks, make practical fixes where possible and recommend the clearest route forward.
