The verdict in three sentences
For a regional ISP, the website has to become a sales channel: the prospect enters an address, sees whether fiber or fixed wireless is available, picks a plan and signs up online. In Berlin in 2026, a regional provider pays 40,000 to 100,000 EUR for a coverage checker and sign-up funnel that meets the German Telecommunications Act (TKG), while a similar project in Brazzaville costs 7 to 15 million FCFA (about 10,700 to 22,900 EUR). Done well, the funnel cuts sales calls by about 40% and shortens the time from request to installation.
What each component costs in 2026
The amounts below are 2026 estimates. They depend heavily on the quality of your network data (address files, coverage polygons, cabinet and antenna positions).
| Component | Berlin (EUR) | Brazzaville (FCFA) |
|---|---|---|
| Commercial site (plans, company, support, news) | 15,000 - 35,000 | 4,000,000 - 9,000,000 |
| Fiber and wireless coverage map | 4,000 - 10,000 | 1,200,000 - 2,500,000 |
| Address-level coverage checker | 8,000 - 20,000 | 1,800,000 - 3,500,000 |
| Sign-up funnel with identity and contract summary | 8,000 - 20,000 | 1,500,000 - 3,000,000 |
| Payment (SEPA direct debit, card / mobile money) | 3,000 - 6,000 | 800,000 - 2,000,000 |
| CRM integration and installation tracking | 6,000 - 15,000 | 1,500,000 - 3,500,000 |
| Hosting, monitoring and maintenance | 500 - 1,500 per month | 100,000 - 300,000 per month |
The overall timeline is 12 to 18 weeks. In Berlin, addresses are standardized, so the checker can match street and house number. In Brazzaville, addressing is partial, so the checker works by district, neighborhood and landmark, plus phone geolocation.
The sign-up funnel, step by step
Every step removed or simplified wins customers. Here is a typical funnel with indicative pass-through rates (2026 estimates, to be measured on your own site).
| Step | What the prospect sees | Indicative pass-through |
|---|---|---|
| 1. Coverage check | Address or GPS position | 100% (starting point) |
| 2. Result | Fiber, wireless or waitlist | 70 - 85% continue |
| 3. Plan selection | 3 to 4 plans, speed, monthly price, term | 50 - 65% |
| 4. Details and contract summary | Name, contact, TKG contract summary | 35 - 50% |
| 5. Payment setup | SEPA mandate, card or mobile money | 25 - 40% |
| 6. Installation appointment | Proposed slot, SMS reminder | 22 - 38% |
Under the TKG, German providers must give a contract summary before signature, allow monthly cancellation after the minimum term and offer an online cancellation button. Build these into the funnel from day one rather than adding them later. Prospects outside the coverage area should join a waitlist: it gives the network team a map of real demand for expansion planning.
Technical points to require
- a lightweight map with a fallback to a plain address or neighborhood search;
- coverage updates by the network team without involving the agency (file or spreadsheet import);
- reliable payment webhooks with automatic retries;
- a customer area to track installation, pay bills and open tickets;
- GDPR-compliant consent and data retention, with hosting in the EU for Berlin.
Mini case study
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Ms. Mabiala, marketing director of an ISP in Brazzaville, handles 3,000 connection requests per month, all by phone. Each qualification call lasts about 8 minutes, so 400 hours per month. If 40% of requests move to the online funnel, the team saves 160 hours per month, about one telesales position at 300,000 FCFA. If the funnel also adds 60 subscriptions per month at 25,000 FCFA, that is 1,500,000 FCFA in extra monthly revenue. With a 10,000,000 FCFA project, payback comes in just over 5 months. A Berlin ISP with the same volume saves 160 hours at about 40 EUR, or 6,400 EUR per month, and recovers a 70,000 EUR funnel in under a year on time savings alone.
FAQ
How much does an ISP website with a coverage checker cost in Berlin?
Expect 40,000 to 100,000 EUR for a site, coverage checker and TKG-compliant sign-up funnel. A site with a simple map and contact form costs 20,000 to 40,000 EUR.
How does a coverage check work without precise addresses?
It combines district, neighborhood, landmark and phone geolocation. Accuracy is usually 100 to 300 meters, enough to route the prospect to fiber or wireless.
Which payment methods should we offer?
In Germany, SEPA direct debit is the default for subscriptions, with card as backup. In Brazzaville, Airtel Money and MTN MoMo cover most residential customers.
What about prospects outside coverage?
Add them to a waitlist by area. Once 50 to 100 requests build up in a zone, the network team has a quantified case for expansion.
What timeline should we expect?
Between 12 and 18 weeks for the full project. You can launch the site and map in 8 weeks, then add online sign-up in a second phase.
Let's scope your project. Share your plans, coverage files and monthly request volume, and we will price the site, the coverage checker and payment integration with a phased schedule. 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.
