How do you build an agency that works?

The question "How do you build an agency" is at the heart of every entrepreneur who wants not just a business, but a brand with real impact. At Arjan Gaal — Websites, merken & fotografie in Meppel, I’ve built agencies and grown brands by combining hands-on skills, commercial insights, and a no-nonsense approach. Here’s how you move from the first spark of curiosity to an agency that wins clients and delivers results.

How to create an agency: The building blocks

Start with the basics—what do you want to solve, and who do you serve? When I started my own agencies, it was never just about having a cool logo or a catchy name. The real work is in finding a need and crafting practical solutions that speak to a specific audience, whether that’s e-commerce entrepreneurs, local businesses, or anyone with a story to tell.

• Define your focus: Pick a clear specialty. For me, it’s where websites, branding, and quality photography meet.
• Understand your client: Take time to see the world through their eyes. Listening beats guessing.
• Start lean: Skip the big office or fancy extras. Genuine results and fast delivery matter most.
• Document your process: Have a repeatable workflow—discovery, creation, testing, launch.
• Build your toolkit: Use reliable tools and software, but don’t overcomplicate your stack. Speed and clarity make the difference.
• Show your work: Build a small but mighty portfolio that highlights real results, not just pretty pictures.

What are the four pillars of agency?

Any agency, big or small, is built on strong foundations. I’ve seen again and again that success is a matter of keeping it simple and focused. Here are the four pillars that work for both my own agencies and my clients:

• Strategy: Understand where your agency fits in the market and what your clients want most.
• Execution: Deliver work fast, without endless revisions or unnecessary extras.
• Communication: Always keep lines open—updates, feedback, and transparency are non-negotiable.
• Continuous improvement: Measure, learn, and tweak as you go. Good agencies are never static.

The 40-40-20 rule in marketing agencies

The 40-40-20 rule is a classic in direct marketing—and it’s surprisingly relevant when you’re learning how to build an agency. The breakdown: 40% of success comes from your audience (who you target), 40% from your offer (what you give them), and 20% from your creative (how you present it). For an agency, this means focus most of your energy on finding the right people and crafting irresistible offers, then make sure your branding and communication seal the deal.

What about the big 5 agencies?

If you Google agency building, you’ll see names like WPP, Omnicom, Publicis, Interpublic, and Dentsu as the "big 5". They’re giants for a reason—but the principles that make them strong work at every scale: clear vision, streamlined processes, and relentless client focus. You don’t need their budget; you just need to apply their mindset, but faster and more personally.

Practical checklist: How do you build an agency?

1. Pinpoint your niche & value offer
2. Validate with 2–3 ideal clients
3. Set up simple, secure workflows: contracts, billing, feedback
4. Create a starter portfolio (even if it’s demo work)
5. Launch a clear, fast website—here’s why speed matters
6. Prioritise discoverability: SEO, social proof, real case studies
7. Iterate—review, improve, and ask for feedback frequently

Lessons from experience: What really matters?

I learned early that an agency is more about discipline than big ideas. Speed wins. Stripped-down, hand-coded sites don’t just look good—they load fast and turn visitors into buyers. Most importantly, everything you create must have a purpose, not just fill a space. The journey from curiosity to trusted agency is a process of continuous listening, learning, and adapting.

Your agency, your way—backed by expertise

Building an agency is all about combining creativity with structure. There’s no one-size-fits-all, but with strategy, speed, and a focus on clients' real needs, you can carve your own place in any market. Still have questions or want to explore how your agency or brand can grow? Let’s plan a chat—I’m here to help you turn ideas into action.