Choosing a software agency: criteria, red flags and questions

A wrongly chosen software agency costs you not only the project budget, but also the months you lose before you realize it is going wrong. Price is rarely the deciding factor in that. A cheap party that delivers an unmaintainable codebase is more expensive than a solid agency that gets it right the first time. Here are the criteria that genuinely matter.

The criteria that count

Assess an agency not on the prettiest portfolio page, but on these concrete points:

• Stack and future-proofing: do they build on modern, widely supported technology? A site on an outdated framework is a millstone around your neck in two years.
• Who does the work: are you talking to the people who also build, or only to sales? Sold by a senior and executed by an inexperienced junior is a common pattern.
• Ownership: do you get the code, the repository and the accounts? Or do you stay dependent because everything is in the agency's name?
• Cases and references: are there live, working examples, preferably in your industry? Ask whether you can speak to the owners.
• Maintenance and monitoring: what happens after delivery? An agency without a hosting and monitoring approach leaves you stranded at the first outage.

At NedDev everything runs on Laravel 12, Next.js 16 and our own Hetzner and Cloudflare infrastructure with monitoring. Our cases, from ClaimHandler to Lexi AI, run live in production with real users.

The red flags

Some signals predict problems before the project even starts. Watch for these:

• Vague quote: one amount without a breakdown of what you get. A good quote specifies scope, phases and what falls outside it.
• Not a word about testing: code without tests is a time bomb. Ask explicitly how they ensure quality.
• Promises without numbers: "we will make you more findable" is not a promise, "we set up technical SEO and schema markup" is.
• No own hosting or monitoring: if they throw your code over the fence and nothing more, you are on your own when problems hit.
• Everything is possible, nothing is a problem: an agency that never says "we advise against that" is not thinking with you, it is just selling.

The questions you should ask

Ask every party the same questions, so you compare apples with apples. The answers often say more than the quote.

• Who concretely works on my project, and with how many years of experience?
• Do I get the full code and ownership of all accounts?
• How do you ensure quality? Do you write tests?
• What happens after delivery: hosting, monitoring, maintenance?
• Can you show a live case in my industry and may I speak to that client?
• What would you advise me against, and why?

That last question is the most revealing. An agency that honestly says paid ads are a waste of your money, or that your idea is too big for a first version, is thinking with you. We do that regularly, even when it earns us less work.

The conversation that makes the difference

Comparing a quote is useful, but the first conversation tells you more about the collaboration than any document. In that conversation, watch for the following:

• Do they ask questions or pitch right away: a good agency wants to understand your problem first before proposing a solution. Whoever shows up immediately with a package is selling rather than thinking along.
• Do they understand your business: technology is a means, not the goal. A party that talks only about frameworks and not about your customers and revenue misses the core.
• Are they concrete about risks: every project has uncertainties. An agency that names them is more trustworthy than one that presents everything as problem-free.

You are not just choosing a vendor, you are choosing a partner for months or years. The tone of the first conversation often predicts how the collaboration will go when things get tough, and that moment comes in every software project.

Price in perspective

Price belongs in the trade-off, but last, not first. Our ranges are transparent: a website €2,500 to €18,000, a webshop €4,500 to €30,000, SaaS €15,000 to €60,000, hosting and management from €495 per month. A quote far below market usually means something is missing: testing, maintenance, or ownership.

• Compare what you get, not just the amount.
• Ask about the ongoing costs, not only the build price.
• Factor an unmaintainable codebase in as a future cost.
• Ask whether the price can be split into phases, so you can judge per step whether the collaboration works before committing the full budget.

Conclusion

You recognize the right software agency by transparency, ownership, a future-proof stack and the honesty to advise you against something. Red flags are vagueness, missing testing and promises without numbers. Ask every party the same sharp questions and compare the answers. Curious how we work? See our services and approach.