The verdict in three sentences
A serious website for an environmental consultancy costs EUR 5,500 to 9,500 in Berlin in 2026, with maintenance at EUR 100 to 150 per month. What makes the difference for a public buyer or a developer is references sorted by mission type and a mapped portfolio that proves your local footprint. Delivered in 6 weeks, the site becomes a credible attachment to every tender response.
Breaking down a EUR 5,500 or 9,500 quote
The managing director of a Berlin consultancy sells regulatory expertise: environmental impact assessments, industrial emission permits, biodiversity surveys, carbon footprints, soil diagnostics. Clients are municipal technical departments, real estate developers and manufacturers. They do not read slogans, they check comparable references.
| Item | EUR 5,500 quote | EUR 9,500 quote | What it changes |
|---|---|---|---|
| Scoping and sitemap | EUR 600 | EUR 1,000 | Pages by expertise and by client type |
| Custom design | EUR 1,400 | EUR 2,200 | Sober look, readable on mobile during site meetings |
| Expertise pages (6 to 10) | EUR 1,200 | EUR 1,800 | One page per mission: permits, impact, carbon, water, soil |
| Filterable references | EUR 900 | EUR 1,500 | Filters by mission, client, municipality, year |
| Mapped portfolio | EUR 500 | EUR 1,400 | Map of Berlin and Brandenburg with geolocated projects |
| Downloadable brochures and CVs | EUR 300 | EUR 600 | Light form to qualify leads |
| Local SEO and launch | EUR 600 | EUR 1,000 | Pages for Berlin, Potsdam and surrounding districts |
| Total | EUR 5,500 | EUR 9,500 | 6 weeks |
The EUR 9,500 version is justified once the firm has more than about forty references or works across two regions.
Why references by mission win contracts
In public procurement, technical merit often weighs 50 to 60% of the score. The buyer looks for comparable, recent missions in a similar area. A site where they find in three clicks "12 impact assessments for urban development zones in Brandenburg since 2021" strengthens your technical proposal.
| Criterion for a public buyer or developer | Generic site | Site structured by mission |
|---|---|---|
| Time to find a comparable reference | 3 to 5 min, often abandoned | Under 30 s with filters |
| Proof of local footprint | List of town names | Map with 40 to 80 geolocated projects |
| Accreditations and certifications | Logo in the footer | Dedicated page with verifiable numbers |
| Brochure download | Single 15 MB PDF | Per-discipline brochures of 1 to 2 MB |
| Qualified inbound contacts per month | 1 to 2 | 4 to 8 (2026 estimate) |
| Updating a reference | Call the agency | 5 minutes in the CMS |
The mapped portfolio has a second use: your account managers open it on a tablet in meetings to show projects near the client's site.
Maintenance: EUR 100 or 150 per month
At EUR 100 per month you get EU hosting, security updates, daily backups and one hour of changes. At EUR 150 you add quarterly SEO monitoring and references added by the agency when your team lacks time. Over three years the difference is EUR 1,800, to be compared with the value of a single impact assessment contract, often between EUR 15,000 and 60,000.
Mini case study
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Jonas, managing director of a 9-person consultancy in Berlin, answers 30 tenders a year with a 20% success rate, or 6 contracts averaging EUR 25,000. He invests EUR 8,200 in the site, then EUR 150 per month, or EUR 9,950 in year one. If online references and inbound contacts lift the success rate to 25%, he wins about 1.5 more contracts a year, or EUR 37,500 of extra revenue. The investment pays back with the first additional contract.
FAQ
Should we publish the names of public clients?
Public contracts are generally public, but get written consent from private developers. In 80% of cases, mentioning the type of client and the municipality is enough.
Can we show sensitive impact assessment data?
No, publish the nature of the mission, the area or capacity concerned and the year, never confidential findings. A reference sheet runs 80 to 150 words.
Does the site really help local SEO?
Yes, queries like "environmental consultancy Berlin" or "emission permit Brandenburg" have little competition. A first-page Google ranking is achievable in 3 to 6 months.
Who updates the references?
The CMS lets your assistant or a consultant add a reference in 5 minutes. Otherwise, the EUR 150 monthly plan includes the agency adding them.
Is six weeks realistic?
Yes, if you supply the reference list and photos in week 1. Without that content, the timeline often slips to 8 or 10 weeks.
Let's scope your project. Send us your number of references, your areas of expertise and your service area for a precise quote between EUR 5,500 and 9,500. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
