How to Choose a Web Agency
The things that really matter when choosing a web agency. Portfolio, expertise, pricing, process: everything to check before you sign.
The steps to follow
Define exactly what you need
Before you contact any agency, get clear on your needs. What kind of site do you want: brochure, e-commerce, web app? Which features are essential: contact form, client area, blog, online booking? What is a realistic budget? What is your timeline? Do you need SEO and marketing support as well as the build? Write a one-page brief summarising the project, your business goals and your constraints. It lets you compare the agencies' answers on a level footing and judge how well they understand your situation.
Look at the portfolio and the references
A portfolio is the best indicator of an agency's quality. Look at the sites they have built: are they modern, fast, well thought out? Try them on a phone. Check their performance with Google PageSpeed Insights. Has the agency worked in your sector? Ask for case studies with concrete results: more traffic, a better conversion rate, a measured return on investment. Speak to former clients about their experience. Check Google reviews and testimonials. Be wary of portfolios that only show mock-ups: ask for the URLs of live sites so you can test them yourself.
Check the technical expertise
Technical expertise decides how good your site is and how long it lasts. Ask which technologies the agency uses, and why. Modern agencies work with frameworks such as Next.js or Nuxt.js rather than heavy content management systems. Judge their grasp of technical SEO: semantic markup, performance, Core Web Vitals. Check that they follow accessibility and security good practice. Ask how they handle hosting and maintenance. A good agency offers technical support after delivery. Ask about their development process: do they use Git, staging environments, automated tests?
Compare how they work
How an agency works has a direct effect on whether your project succeeds. A good one follows a structured process: brief, mock-ups, approval, build, testing, delivery. Ask how approvals happen along the way: will you get a preview version? How many rounds of revisions are included? How are changes handled mid-project? How do they communicate: regular calls, a project management tool, a named contact? Judge their responsiveness from the first exchanges. An agency that takes a week to answer your initial enquiry will not be any quicker once the project starts.
Read the quotes and the terms
Compare quotes in detail, not just the bottom line. Check what is included: number of pages, responsive layout, basic SEO, forms, hosting, maintenance. Be careful with prices that look too low, as they usually hide compromises on quality or costs that appear later. Ask for a clear payment schedule: a deposit of 30 to 50% at the start is standard. Check who owns the code: you should own your site and its source code. Clarify the recurring costs: hosting, maintenance, updates. Ask what happens if the project runs late or if you want to add features.
Check the support after delivery
Your relationship with the agency does not end when the site goes live. Check what you get after delivery: bug fixes, technical support, a warranty period. Ask whether the agency offers related services: SEO, online advertising, social media management. A good web partner stays with you as your site and your visibility grow. Look at their maintenance offer: security updates, backups, monitoring. Ask how change requests are handled after delivery, both lead times and pricing. Choose an agency that behaves like a long-term partner, not just a supplier.
Our advice
Always get at least three quotes so you can compare approaches as well as prices.
Be wary of any agency promising page one of Google within a month. SEO is a long game.
Favour an agency that is local or easy to reach, so communication stays smooth throughout the project.
Frequently asked questions
Freelancer or web agency: which should I choose?
A freelancer is often cheaper but works alone, which can create availability problems. An agency gives you a team across design, development and SEO, and continuity of service.
How do I check that a web agency is reliable?
Read their Google reviews, speak to former clients, test their live work and judge how quickly they respond from the very first exchanges.
What budget should I plan for a good web agency?
A professional brochure site costs between 490€ and 3000€ depending on complexity. Be wary of offers under 300€, which usually mean an unmodified template.
