How to Choose a B2B Web Agency in Berlin (2026)

The verdict in three sentences

Choosing a B2B web agency comes down to 7 weighted criteria, not price alone, because a partner's value is measured over 3 years, not on the first invoice. The two criteria that best protect the client in 2026 are code ownership (no lock-in) and the SLA (availability and response commitments). With a day rate of EUR 450 to 750 excl. VAT depending on seniority, a 100-point score makes the comparison objective and defensible internally.

The weighted criteria grid

A decision maker comparing 5 agencies should set the grid before receiving offers, so as not to be swayed by the smoothest salesperson. Here is the reference weighting.

Each criterion is scored 0 to 5, multiplied by its weight, for a total scaled to 100. A gap of 12 to 15 points is significant; below 8 points, two agencies are equivalent and the human factor (rapport, responsiveness) decides.

Day rate, code ownership and SLA, quantified

Three criteria deserve precise benchmarks because they hide most of the nasty surprises.

Code ownership must be in writing: at project end you receive the full source code, credentials and documentation. Without this clause, switching agencies can cost 30 to 60 % of the initial budget in rebuild.

Mini case study

Thomas, CEO of a mid-sized industrial firm in Berlin, compares 5 agencies for a EUR 35,000 excl. VAT site. Agency A is cheapest (EUR 28,000) but refuses to hand over the code and offers a vague SLA: it caps at 61/100. Agency C, at EUR 34,000, guarantees code ownership, a < 24 h SLA and 4 industrial references: it scores 88/100. Thomas picks C. Two years later, an acquisition forces him to bring the site in-house: because he owns the code, the takeover costs EUR 4,000 instead of the ~EUR 18,000 (about 55 % of budget) a full rebuild with agency A would have required.

FAQ

Should I always pick the cheapest agency? No. Price carries 15 % in a balanced grid. A 15-to-20 % gap on the initial quote is easily recovered if the agency guarantees code ownership and a serious SLA.

Why is code ownership crucial? Without it you are captive: switching vendor or going in-house costs 30 to 60 % of budget in rebuild. Require a code and documentation transfer clause at delivery.

What day rate is reasonable in 2026? Between EUR 450 and 750 excl. VAT for senior profiles in Western Europe. A very low rate (< EUR 300) often hides uncontrolled subcontracting or a lack of seniority.

What warranty should I require after delivery? A 12-month warranty covering defects at no extra cost, distinct from maintenance (enhancements). It is a 2026 standard for a serious B2B project.

How many agencies should I consult? 3 to 5 is enough. Beyond that, analysis becomes time-consuming with no quality gain; below 3 you lack comparison points on price and approach.

Let's scope your project. Send us your sector and your 3 key features: we deliver an offer with guaranteed code ownership, a quantified SLA and a detailed day rate. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.