There are many organizations that make clearly small decisions with little impact, only to have those decisions turn into big issues later. From choosing the cheapest quote to selecting an agency with little experience with TYPO3, these decisions can be avoided with relative ease once you know what to look for.
In this blog, we will explore some of the common mistakes made when hiring a TYPO3 agency, as well as clear, simple actions to avoid such mistakes.
Let's get started!
Common Mistakes When Choosing a TYPO3 Agency (and How to Avoid Them)

Before hiring a TYPO3 agency, it helps to know the common mistakes companies often make and how you can easily avoid them.
Mistake 1 – Choosing by Price Only
Problem:
- When the budget is tight, it is very tempting to choose the cheapest offer, but in most cases, a low price means low expertise, low work quality, or little care.
- Or it means that cost increases could come your way later.
- Cheaper agencies might take shortcuts, not provide proper testing or documentation, or offer no support after launch.
- These things are crucial to ensure that your TYPO3 website remains stable.
How to avoid it:
When comparing different agencies, look not only at the price but also at what is delivered. Examine their TYPO3 experience and the quality of their previous work and consider what support is offered after launch. Often, a little more money means higher code quality, the ability to update the installation more smoothly, and fewer problems in the future.
Mistake 2 – Not Checking TYPO3 Experience
Problem:
- There are many web agencies that claim to work with TYPO3, but only a few that specialize in it.
- TYPO3 is a powerful but complex content management system, and you need developers who are familiar with its structure, extensions, and methods for updating the core.
- Without solid TYPO3 knowledge, you risk encountering performance, update, or content management issues later on.
How to avoid it:
Always ask for examples of specific TYPO3 experience. Look for certified TYPO3 developers and web agencies that have completed similar projects. Ask for a case study or a customer review. If they have GitHub profiles or have developed TYPO3 extensions, ask to take a look at their work. Actual experience with TYPO3 is the only difference between "it works" and "it works well".
Mistake 3 – No Clear TYPO3 Project Plan or Scope
Problem:
- Many projects start with unclear requirements, and this is where confusion begins.
- Without clear direction, deadlines are missed, costs rise, and functionalities are forgotten.
- A TYPO3 project requires a defined process: design, create content, integrate, test, go live.
How to avoid it:
Before starting a project, take a moment to write a brief but clear project briefing. Outline your goals, design style, specific features, and due dates. Ask your agency to provide you with their project plan and communication processes. By bringing structure to your project, you help keep everyone on the same page and avoid frustration later on.
Mistake 4 – Too Many Custom TYPO3 Extensions
Problem:
- You might be tempted to request all customizations, but too many custom extensions usually lead to more problems than benefits.
- It becomes more difficult to update your TYPO3 website, performance decreases, and reliance on a specific developer or agency makes maintaining or upgrading your custom features more time-consuming and expensive.
How to avoid it:
Ensure that the agency uses TYPO3's built-in features or that you rely on community extensions that have been around for a while and continue to be maintained. Use custom code only when there is no other option. Make sure the agency documents every custom feature so that future developers can easily manage or make changes to it.
Mistake 5 – Ignoring TYPO3 Maintenance and Support
Problem:
- Many companies stop paying attention to their website after launch, but TYPO3 requires regular maintenance.
- Without updates, your site becomes increasingly vulnerable to security risks, compatibility issues, or suffers from slow performance.
- Ultimately, ignoring maintenance and letting things slide can lead to more time and money being spent to get the website back in order and fix the issues.
How to avoid it:
When looking for an agency for TYPO3 development, choose one that offers ongoing support options, security patches on request, and version upgrades (for security and performance improvements). Ask what is included in their maintenance plan (e.g., backups, bug fixes, regular updates, and update schedules). A good agency will help you keep your site running securely and smoothly in the long term.
Mistake 6 – Wrong Size or Fit of TYPO3 Agency
Problem:
- It can happen that a company chooses an agency for a project that is not large or complex enough for that agency.
- A small agency simply would not have the resources for large corporate requirements, and conversely, a larger agency might be far too expensive for smaller websites.
- An unsuitable team leads to a poor experience: communication fails, leading to missed goals and wasted valuable time and money.
How to avoid it:
Choose a TYPO3 shop that fits the size of your project. For small to medium-sized website projects, consider a TYPO3 agency that specializes in a specific niche or complex project type.
Larger, enterprise-related projects require an agency with larger teams, established workflows, and experience in the corporate sector. Considering how the agency communicates, receives feedback, and manages schedules can often be more telling than the actual size of the agency.
How to Choose the Right TYPO3 Agency
Once you have an understanding of what to look for, it is much simpler to find a trusted partner. Below are some short but mighty tips to help with your decision:
1. Ask for real TYPO3 case studies and client feedback.
Find project examples that are similar to yours. A reputable agency will be willing to share work examples from the past and arrange a conversation with clients on-site.
2. Check communication and response time.
A good agency doesn’t simply produce websites, they communicate and reply in a timely manner. It is important that they ask questions, listen to your suggestions, and keep you updated throughout the project duration.
3. Make sure they include TYPO3 SEO, updates, and long-term support.
Your TYPO3 site requires more than design and development services. Look for an agency who provides search optimization, regular updates, and long-term care after the site goes live. This will allow your site to get better and stay secure over the long haul.
If you’re unsure how to select or compare your options, check out our guide on choosing the right TYPO3 agency. In that case, it covers what to look for and how to make an informed decision when selecting your ideal TYPO3 agency.
Conclusion
Choosing the right TYPO3 agency can make all the difference in your project’s success. The wrong choice can lead to wasted time, unexpected costs, and ongoing frustration, while the right one becomes a long-term partner who helps your business grow.
Focus on what truly matters: TYPO3 experience, clear communication, transparent processes, and continued support after launch. A good agency doesn’t just deliver a website; they help you build a strong digital foundation that lasts.
Taking a little extra time to choose wisely now will save you from bigger problems later, and give you peace of mind knowing your TYPO3 project is in capable hands.
FAQs
A professional TYPO3 agency knows the system in depth, creates clean code, sets it up properly, and provides long-term support. An experienced TYPO3 team helps you avoid delays and security problems and potential hidden cost in the future.
You can ask for TYPO3 certifications, case studies, or client references. You could also look at their TYPO3 extensions, templates, or other open-source work to see the quality of their actual work.
You want to ask about the timeline, the scope of the project, the features included, and the plan for ongoing maintenance. You want to ensure that there is a clear understanding of everything in writing if you are all on the same page to avoid any miscommunication down the line.
Your TYPO3 site needs to be reviewed and updated at least every few months on average. Regularly updating your site helps to keep it secure, fast, and up to date with new extensions or browsers.
Yes, but it is easier if you current agency gives you all access, files, and documentation. This is another reason you should work with a professional and transparent TYPO3 partner from the beginning.
Contact for Internet agency and TYPO3 projects
Sven Thelemann
Service Partner - Germany





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